MASTER Net MASTER Database: GRB201231.61 page

Please use the reference to MASTER DataBase as Lipunov et al., 2010, MASTER Robotic Net, Advances in Astronomy, vol. 2010, p.30L

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GRB coord: ErrorBox (deg): Sys Error (deg):
Sattel : Trigger: Notice:
GRB_Name: trignum: Nights after: FullSky


Name FERMI GRB201231.61
Trignum 631118376
Trigger time 2020-12-31 14:39:31.74
Notice time 2020-12-31 18:42:19.336031
Coord, eb (22h 13m 52.80s , -26d 13m 48.0s) , 12.51
Max dist: 1 sigma 3 sigma
AGN candidates: Milliquas
r90wise
wiseXgaia
BL Lac candidates: 1 Sigma
3 Sigma

MASTER observatories and transients from them in error-field
Kislovodsk Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)
Amur Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)
Tunka Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)
OAFA Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)
IAC Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)
SAAO Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)
Tavrida Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)
OAGH Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)

All alerts for this trigger
id noticetime coord2000 satel errorbox type trigger seq trig_type links
1516268 2020-12-31 18:42:19.336031 22h 13m 52.80s -26d 13m 48.0s FERMI 12.51 alert 631118376 16 112 alert
1516262 2020-12-31 18:42:12.105664 22h 27m 12.00s -26d 03m 00.0s FERMI 36.6 alert 631118376 26 111 alert

DAYS:

MASTER optical transients in this field
Will be published in GCN, ATEL

Synchronous WFC images
Distance datetime coord2000 observatory camera links
Errorbox center visibility at MASTER facilities
trigger notice notice+1hr now

2020-12-31 14:39:31 (JD 2459215.110775)

Siderial time 23.865514 h

Ra 22:13:52.80 Dec -26:13:48.00
(333.470000d, -26.230000d)

Rise 2021-01-01 12:57:19

Transit 2021-01-01 15:57:48

Set 2021-01-01 18:58:18

Amur

Object: Altitude: -35.21 Azimuth: 90.19

Sun: Altitude: -60.88 Azimuth: 154.56

Moon: Altitude: 53.60 Azimuth: 304.62

Tunka

Object: Altitude: -20.30 Azimuth: 73.03

Sun: Altitude: -49.36 Azimuth: 120.56

Moon: Altitude: 38.92 Azimuth: 280.74

Kislovodsk

Object: Altitude: 15.00 Azimuth: 27.14

Sun: Altitude: -10.21 Azimuth: 67.76

Moon: Altitude: -1.31 Azimuth: 234.44

Tavrida

Object: Altitude: 16.51 Azimuth: 19.51

Sun: Altitude: -5.10 Azimuth: 62.28

Moon: Altitude: -5.45 Azimuth: 228.23

SAAO

Object: Altitude: 80.90 Azimuth: 130.52

Sun: Altitude: 36.58 Azimuth: 83.86

Moon: Altitude: -53.03 Azimuth: 272.67

IAC

Object: Altitude: 28.50 Azimuth: 329.71

Sun: Altitude: 34.11 Azimuth: 25.59

Moon: Altitude: -37.73 Azimuth: 184.32

Argentina

Object: Altitude: 19.47 Azimuth: 289.41

Sun: Altitude: 62.13 Azimuth: 259.24

Moon: Altitude: -46.24 Azimuth: 92.30

Mexico

Object: Altitude: -40.69 Azimuth: 279.36

Sun: Altitude: 3.13 Azimuth: 299.39

Moon: Altitude: 12.14 Azimuth: 110.67

Ural

Object: Altitude: -1.97 Azimuth: 40.57

Sun: Altitude: -23.97 Azimuth: 84.14

Moon: Altitude: 14.53 Azimuth: 248.42

Vostryakovo

Object: Altitude: 5.70 Azimuth: 22.13

Sun: Altitude: -11.92 Azimuth: 66.49

Moon: Altitude: 3.31 Azimuth: 231.03

Gal. latitude: -55.510669 Gal. longitude: 25.839532

Dist. to Sun: 47.492204

Dist. to Moon: 149.768825

Moon coord.: (120.117528 d, 23.841252 d)

Sun coord.: (280.981303 d, -23.060108 d)

Lunar disk: 0.976828

Lunar phase: 17.511722

Lunar bright limb: 91.617544

No SN in this field

2020-12-31 18:42:19 (JD 2459215.279387)

Siderial time 3.923260 h

Ra 22:13:52.80 Dec -26:13:48.00
(333.470000d, -26.230000d)

Rise 2021-01-01 12:57:19

Transit 2021-01-01 15:57:48

Set 2021-01-01 18:58:18

Amur

Object: Altitude: -65.64 Azimuth: 169.61

Sun: Altitude: -44.26 Azimuth: 251.43

Moon: Altitude: 56.36 Azimuth: 46.99

Tunka

Object: Altitude: -56.27 Azimuth: 128.06

Sun: Altitude: -56.19 Azimuth: 220.51

Moon: Altitude: 61.70 Azimuth: 3.49

Kislovodsk

Object: Altitude: -17.99 Azimuth: 70.58

Sun: Altitude: -53.01 Azimuth: 111.71

Moon: Altitude: 38.31 Azimuth: 272.95

Tavrida

Object: Altitude: -12.70 Azimuth: 65.52

Sun: Altitude: -46.91 Azimuth: 104.62

Moon: Altitude: 32.21 Azimuth: 267.69

SAAO

Object: Altitude: 30.89 Azimuth: 76.68

Sun: Altitude: -10.90 Azimuth: 53.54

Moon: Altitude: -4.90 Azimuth: 245.15

IAC

Object: Altitude: 27.75 Azimuth: 31.73

Sun: Altitude: -5.43 Azimuth: 66.71

Moon: Altitude: -10.76 Azimuth: 235.66

Argentina

Object: Altitude: 70.37 Azimuth: 259.01

Sun: Altitude: 61.46 Azimuth: 100.14

Moon: Altitude: -78.27 Azimuth: 312.45

Mexico

Object: Altitude: 7.20 Azimuth: 306.59

Sun: Altitude: 35.00 Azimuth: 348.39

Moon: Altitude: -27.56 Azimuth: 147.14

Ural

Object: Altitude: -31.06 Azimuth: 88.89

Sun: Altitude: -52.92 Azimuth: 147.87

Moon: Altitude: 45.03 Azimuth: 300.32

Vostryakovo

Object: Altitude: -18.93 Azimuth: 70.99

Sun: Altitude: -45.23 Azimuth: 118.79

Moon: Altitude: 34.16 Azimuth: 277.66

Gal. latitude: -55.510669 Gal. longitude: 25.839532

Dist. to Sun: 47.330280

Dist. to Moon: 151.834703

Moon coord.: (122.490560 d, 23.541123 d)

Sun coord.: (281.167479 d, -23.046959 d)

Lunar disk: 0.971262

Lunar phase: 19.520269

Lunar bright limb: 93.095898

No SN in this field

2020-12-31 19:42:19 (JD 2459215.321053)

Siderial time 4.925998 h

Ra 22:13:52.80 Dec -26:13:48.00
(333.470000d, -26.230000d)

Rise 2021-01-01 12:57:19

Transit 2021-01-01 15:57:48

Set 2021-01-01 18:58:18

Amur

Object: Altitude: -64.65 Azimuth: 201.97

Sun: Altitude: -34.90 Azimuth: 264.64

Moon: Altitude: 48.64 Azimuth: 64.81

Tunka

Object: Altitude: -62.28 Azimuth: 151.91

Sun: Altitude: -49.04 Azimuth: 240.08

Moon: Altitude: 59.02 Azimuth: 29.94

Kislovodsk

Object: Altitude: -28.48 Azimuth: 79.82

Sun: Altitude: -62.27 Azimuth: 131.03

Moon: Altitude: 48.57 Azimuth: 284.57

Tavrida

Object: Altitude: -22.75 Azimuth: 74.98

Sun: Altitude: -56.75 Azimuth: 120.40

Moon: Altitude: 42.40 Azimuth: 278.38

SAAO

Object: Altitude: 18.72 Azimuth: 70.26

Sun: Altitude: -20.37 Azimuth: 43.12

Moon: Altitude: 5.85 Azimuth: 237.39

IAC

Object: Altitude: 19.65 Azimuth: 43.51

Sun: Altitude: -17.82 Azimuth: 72.91

Moon: Altitude: 0.16 Azimuth: 243.21

Argentina

Object: Altitude: 82.03 Azimuth: 227.31

Sun: Altitude: 48.78 Azimuth: 90.51

Moon: Altitude: -67.33 Azimuth: 285.61

Mexico

Object: Altitude: 16.88 Azimuth: 316.21

Sun: Altitude: 35.72 Azimuth: 5.30

Moon: Altitude: -33.05 Azimuth: 161.13

Ural

Object: Altitude: -39.19 Azimuth: 102.08

Sun: Altitude: -55.78 Azimuth: 171.14

Moon: Altitude: 51.05 Azimuth: 318.05

Vostryakovo

Object: Altitude: -27.23 Azimuth: 82.56

Sun: Altitude: -51.94 Azimuth: 137.10

Moon: Altitude: 42.03 Azimuth: 291.25

Gal. latitude: -55.510669 Gal. longitude: 25.839532

Dist. to Sun: 47.290273

Dist. to Moon: 152.343302

Moon coord.: (123.076237 d, 23.461266 d)

Sun coord.: (281.213482 d, -23.043676 d)

Lunar disk: 0.969793

Lunar phase: 20.017799

Lunar bright limb: 93.442615

No SN in this field

2024-11-03 12:15:20 (JD 2460618.010648)

Siderial time 17.646763 h

Ra 22:13:52.80 Dec -26:13:48.00
(333.470000d, -26.230000d)

Rise 2024-11-04 16:45:13

Transit 2024-11-04 19:45:43

Set 2024-11-04 22:46:13

Amur

Object: Altitude: 11.20 Azimuth: 19.22

Sun: Altitude: -40.04 Azimuth: 118.45

Moon: Altitude: -34.38 Azimuth: 91.17

Tunka

Object: Altitude: 11.91 Azimuth: 356.96

Sun: Altitude: -25.05 Azimuth: 97.23

Moon: Altitude: -19.42 Azimuth: 73.82

Kislovodsk

Object: Altitude: -1.15 Azimuth: 306.34

Sun: Altitude: 15.02 Azimuth: 50.75

Moon: Altitude: 16.09 Azimuth: 27.56

Tavrida

Object: Altitude: -6.78 Azimuth: 300.58

Sun: Altitude: 18.81 Azimuth: 43.33

Moon: Altitude: 17.64 Azimuth: 19.80

SAAO

Object: Altitude: 17.17 Azimuth: 290.60

Sun: Altitude: 58.49 Azimuth: 116.12

Moon: Altitude: 80.07 Azimuth: 135.42

IAC

Object: Altitude: -39.68 Azimuth: 281.86

Sun: Altitude: 45.77 Azimuth: 348.58

Moon: Altitude: 29.49 Azimuth: 329.03

Argentina

Object: Altitude: -31.82 Azimuth: 355.47

Sun: Altitude: 32.36 Azimuth: 268.42

Moon: Altitude: 18.93 Azimuth: 288.33

Mexico

Object: Altitude: -57.52 Azimuth: 89.15

Sun: Altitude: -17.97 Azimuth: 277.27

Moon: Altitude: -40.32 Azimuth: 277.92

Ural

Object: Altitude: -2.12 Azimuth: 319.09

Sun: Altitude: -1.25 Azimuth: 63.36

Moon: Altitude: -0.90 Azimuth: 41.00

Vostryakovo

Object: Altitude: -10.23 Azimuth: 301.95

Sun: Altitude: 9.46 Azimuth: 44.82

Moon: Altitude: 6.82 Azimuth: 22.39

Gal. latitude: -55.510669 Gal. longitude: 25.839532

Dist. to Sun: 104.207546

Dist. to Moon: 81.883963

Moon coord.: (240.215554 d, -25.073944 d)

Sun coord.: (218.797671 d, -15.203144 d)

Lunar disk: 0.037756

Lunar phase: 157.591346

Lunar bright limb: 292.043085

No SN in this field
Recent coverage and limits telegrams

 #######################################################################################
#######################################################################################

  ID = 3612
TYPE = 35
DAYS = 2


MASTER-SAAO robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in South Africa (South African Astronomical Observatory) started inspect of the FERMI GRB201231.61 (trigger No 631118376,22h 13m 52.80s , -26d 13m 48.0s, R=12.51) errorbox  16772 sec after notice time and 16799 sec after trigger time at 2020-12-31 19:19:31 UT, with upper limit up to  19.0 mag. Observations started at twilight.  The observations began at zenith distance = 68 deg. The sun  altitude  is -16.7 deg. 

MASTER-IAC robotic telescope  located in Spain (IAC Teide Observatory) started inspect of the FERMI GRB201231.61 errorbox  17135 sec after notice time and 17162 sec after trigger time at 2020-12-31 19:25:34 UT, with upper limit up to  18.8 mag. Observations started at twilight.  The observations began at zenith distance = 66 deg. The sun  altitude  is -14.6 deg. 

The galactic latitude b = -56 deg., longitude l = 26 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1516268

We obtain a following upper limits.  

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________

   16830 | 2020-12-31 19:19:31 |         MASTER-SAAO | (22h 07m 13.35s , -26d 07m 02.5s) |   C |    60 | 18.0 |        
   16910 | 2020-12-31 19:20:51 |         MASTER-SAAO | (22h 13m 08.29s , -28d 06m 47.4s) |   C |    60 | 15.9 |        
   17193 | 2020-12-31 19:25:34 |          MASTER-IAC | (22h 14m 06.85s , -24d 08m 08.5s) |   C |    60 | 18.0 |        
   17193 | 2020-12-31 19:25:34 |          MASTER-IAC | (22h 05m 13.30s , -24d 03m 09.9s) |   C |    60 | 17.8 |        
   17273 | 2020-12-31 19:26:54 |          MASTER-IAC | (22h 11m 40.95s , -22d 07m 08.3s) |   C |    60 | 18.3 |        
   17273 | 2020-12-31 19:26:54 |          MASTER-IAC | (22h 02m 55.34s , -22d 02m 09.3s) |   C |    60 | 17.8 |        
   17353 | 2020-12-31 19:28:14 |          MASTER-IAC | (22h 05m 58.56s , -28d 08m 38.1s) |   C |    60 | 18.2 |        
   17353 | 2020-12-31 19:28:14 |          MASTER-IAC | (21h 56m 46.61s , -28d 03m 43.8s) |   C |    60 | 17.8 |        
   17433 | 2020-12-31 19:29:34 |          MASTER-IAC | (22h 00m 24.73s , -26d 07m 04.0s) |   C |    60 | 18.2 |        
   17433 | 2020-12-31 19:29:34 |          MASTER-IAC | (21h 51m 22.63s , -26d 02m 08.6s) |   C |    60 | 18.0 |        
   17513 | 2020-12-31 19:30:54 |          MASTER-IAC | (22h 31m 31.97s , -24d 07m 55.7s) |   C |    60 | 18.7 |        
   17513 | 2020-12-31 19:30:54 |          MASTER-IAC | (22h 22m 38.57s , -24d 02m 59.6s) |   C |    60 | 18.4 |        
   17593 | 2020-12-31 19:32:14 |          MASTER-IAC | (22h 35m 57.50s , -26d 06m 57.1s) |   C |    60 | 18.8 |        
   17593 | 2020-12-31 19:32:14 |          MASTER-IAC | (22h 26m 55.39s , -26d 02m 03.2s) |   C |    60 | 18.3 |        
   17673 | 2020-12-31 19:33:34 |          MASTER-IAC | (22h 13m 29.11s , -30d 07m 53.5s) |   C |    60 | 18.7 |        
   17673 | 2020-12-31 19:33:34 |          MASTER-IAC | (22h 04m 06.40s , -30d 03m 02.8s) |   C |    60 | 17.8 |        
   17753 | 2020-12-31 19:34:54 |          MASTER-IAC | (22h 28m 53.14s , -22d 08m 59.7s) |   C |    60 | 18.4 |        
   17753 | 2020-12-31 19:34:54 |          MASTER-IAC | (22h 20m 07.48s , -22d 04m 04.0s) |   C |    60 | 18.1 |        
   17833 | 2020-12-31 19:36:14 |          MASTER-IAC | (22h 31m 58.26s , -30d 08m 30.9s) |   C |    60 | 18.5 |        
   17833 | 2020-12-31 19:36:14 |          MASTER-IAC | (22h 22m 35.49s , -30d 03m 40.3s) |   C |    60 | 18.4 |        
   17913 | 2020-12-31 19:37:34 |          MASTER-IAC | (21h 56m 31.98s , -24d 06m 55.8s) |   C |    60 | 18.4 |        
   17913 | 2020-12-31 19:37:34 |          MASTER-IAC | (21h 47m 38.52s , -24d 02m 02.9s) |   C |    60 | 17.9 |        
   17993 | 2020-12-31 19:38:54 |          MASTER-IAC | (22h 42m 15.36s , -28d 09m 00.8s) |   C |    60 | 18.7 |        
   17993 | 2020-12-31 19:38:54 |          MASTER-IAC | (22h 33m 03.33s , -28d 04m 09.7s) |   C |    60 | 18.4 |        
   18073 | 2020-12-31 19:40:14 |          MASTER-IAC | (22h 11m 00.99s , -20d 07m 11.7s) |   C |    60 | 18.5 |        
   18073 | 2020-12-31 19:40:14 |          MASTER-IAC | (22h 02m 22.28s , -20d 02m 17.0s) |   C |    60 | 18.0 |        
   18152 | 2020-12-31 19:41:33 |          MASTER-IAC | (22h 27m 57.06s , -20d 08m 04.3s) |   C |    60 | 18.5 |        
   18152 | 2020-12-31 19:41:33 |          MASTER-IAC | (22h 19m 18.31s , -20d 03m 08.8s) |   C |    60 | 18.1 |        
   18232 | 2020-12-31 19:42:53 |          MASTER-IAC | (22h 14m 00.61s , -24d 07m 00.8s) |   C |    60 | 18.2 |        
   18232 | 2020-12-31 19:42:53 |          MASTER-IAC | (22h 05m 07.04s , -24d 02m 08.2s) |   C |    60 | 17.9 |        
   18312 | 2020-12-31 19:44:13 |          MASTER-IAC | (22h 11m 42.81s , -22d 08m 01.3s) |   C |    60 | 18.3 |        
   18312 | 2020-12-31 19:44:13 |          MASTER-IAC | (22h 02m 57.02s , -22d 03m 06.9s) |   C |    60 | 17.9 |        
   18392 | 2020-12-31 19:45:33 |          MASTER-IAC | (22h 05m 54.28s , -28d 08m 59.8s) |   C |    60 | 18.1 |        
   18392 | 2020-12-31 19:45:33 |          MASTER-IAC | (21h 56m 42.01s , -28d 04m 10.0s) |   C |    60 | 17.5 |        
   18472 | 2020-12-31 19:46:53 |          MASTER-IAC | (22h 00m 24.14s , -26d 08m 53.4s) |   C |    60 | 18.1 |        
   18472 | 2020-12-31 19:46:53 |          MASTER-IAC | (21h 51m 21.64s , -26d 04m 02.5s) |   C |    60 | 17.5 |        
   18553 | 2020-12-31 19:48:14 |          MASTER-IAC | (22h 31m 35.67s , -24d 07m 08.9s) |   C |    60 | 18.5 |        
   18553 | 2020-12-31 19:48:14 |          MASTER-IAC | (22h 22m 42.14s , -24d 02m 15.7s) |   C |    60 | 18.1 |        
   18633 | 2020-12-31 19:49:34 |          MASTER-IAC | (22h 36m 00.24s , -26d 09m 03.1s) |   C |    60 | 18.5 |        
   18633 | 2020-12-31 19:49:34 |          MASTER-IAC | (22h 26m 57.75s , -26d 04m 11.6s) |   C |    60 | 18.0 |        
   18659 | 2020-12-31 19:50:00 |         MASTER-SAAO | (22h 07m 15.50s , -26d 06m 51.6s) |   C |    60 | 17.0 |        
   18713 | 2020-12-31 19:50:54 |          MASTER-IAC | (22h 13m 28.90s , -30d 07m 16.1s) |   C |    60 | 18.3 |        
   18713 | 2020-12-31 19:50:54 |          MASTER-IAC | (22h 04m 05.81s , -30d 02m 28.9s) |   C |    60 | 17.3 |        
   18739 | 2020-12-31 19:51:20 |         MASTER-SAAO | (22h 13m 10.34s , -28d 06m 19.8s) |   C |    60 | 17.8 |        
   18794 | 2020-12-31 19:52:15 |          MASTER-IAC | (22h 28m 54.39s , -22d 08m 09.8s) |   C |    60 | 18.3 |        
   18794 | 2020-12-31 19:52:15 |          MASTER-IAC | (22h 20m 08.54s , -22d 03m 16.6s) |   C |    60 | 17.9 |        
   18874 | 2020-12-31 19:53:35 |          MASTER-IAC | (22h 31m 52.58s , -30d 07m 09.6s) |   C |    60 | 18.2 |        
   18874 | 2020-12-31 19:53:35 |          MASTER-IAC | (22h 22m 29.66s , -30d 02m 21.7s) |   C |    60 | 18.1 |        
   18953 | 2020-12-31 19:54:55 |          MASTER-IAC | (21h 56m 35.51s , -24d 08m 00.4s) |   C |    60 | 17.8 |        
   18953 | 2020-12-31 19:54:55 |          MASTER-IAC | (21h 47m 41.66s , -24d 03m 10.1s) |   C |    60 | 17.4 |        
   19033 | 2020-12-31 19:56:14 |          MASTER-IAC | (22h 42m 12.34s , -28d 09m 12.7s) |   C |    60 | 18.3 |        
   19033 | 2020-12-31 19:56:14 |          MASTER-IAC | (22h 32m 59.99s , -28d 04m 23.2s) |   C |    60 | 18.0 |        
   19113 | 2020-12-31 19:57:34 |          MASTER-IAC | (22h 11m 00.89s , -20d 08m 42.0s) |   C |    60 | 18.1 |        
   19113 | 2020-12-31 19:57:34 |          MASTER-IAC | (22h 02m 21.80s , -20d 03m 49.0s) |   C |    60 | 17.6 |        
   19193 | 2020-12-31 19:58:54 |          MASTER-IAC | (22h 28m 00.19s , -20d 07m 28.2s) |   C |    60 | 18.1 |        
   19193 | 2020-12-31 19:58:54 |          MASTER-IAC | (22h 19m 21.16s , -20d 02m 35.2s) |   C |    60 | 17.8 |        
   19273 | 2020-12-31 20:00:14 |          MASTER-IAC | (22h 14m 03.76s , -24d 08m 52.5s) |   C |    60 | 17.8 |        
   19273 | 2020-12-31 20:00:14 |          MASTER-IAC | (22h 05m 09.70s , -24d 04m 02.2s) |   C |    60 | 17.3 |        
   19353 | 2020-12-31 20:01:34 |          MASTER-IAC | (22h 11m 42.66s , -22d 07m 21.8s) |   C |    60 | 18.0 |        
   19353 | 2020-12-31 20:01:34 |          MASTER-IAC | (22h 02m 56.57s , -22d 02m 30.1s) |   C |    60 | 17.5 |        
   19411 | 2020-12-31 20:02:33 |         MASTER-SAAO | (22h 42m 17.77s , -34d 04m 56.2s) |   C |    60 | 18.8 |        
   19433 | 2020-12-31 20:02:54 |          MASTER-IAC | (22h 05m 55.28s , -28d 08m 06.4s) |   C |    60 | 17.7 |        
   19433 | 2020-12-31 20:02:54 |          MASTER-IAC | (21h 56m 42.46s , -28d 03m 21.0s) |   C |    60 | 16.9 |        
   19706 | 2020-12-31 20:07:27 |         MASTER-SAAO | (22h 07m 15.96s , -26d 06m 29.5s) |   C |    60 | 14.9 |        
   19713 | 2020-12-31 20:07:34 |          MASTER-IAC | (22h 00m 24.65s , -26d 08m 11.4s) |   C |    60 | 17.5 |        
   19713 | 2020-12-31 20:07:34 |          MASTER-IAC | (21h 51m 22.18s , -26d 03m 17.1s) |   C |    60 | 16.6 |        
   19785 | 2020-12-31 20:08:47 |         MASTER-SAAO | (22h 13m 09.79s , -28d 05m 60.0s) |   C |    60 | 17.0 |        
   19792 | 2020-12-31 20:08:53 |          MASTER-IAC | (22h 31m 31.80s , -24d 09m 22.1s) |   C |    60 | 18.1 |        
   19792 | 2020-12-31 20:08:54 |          MASTER-IAC | (22h 22m 38.42s , -24d 04m 22.8s) |   C |    60 | 17.6 |        
   19865 | 2020-12-31 20:10:07 |         MASTER-SAAO | (22h 36m 41.12s , -36d 04m 57.8s) |   C |    60 | 18.7 |        
   19874 | 2020-12-31 20:10:15 |          MASTER-IAC | (22h 36m 03.14s , -26d 08m 56.1s) |   C |    60 | 18.0 |        
   19874 | 2020-12-31 20:10:15 |          MASTER-IAC | (22h 27m 01.00s , -26d 03m 58.7s) |   C |    60 | 17.6 |        
   19954 | 2020-12-31 20:11:35 |          MASTER-IAC | (22h 13m 25.76s , -30d 07m 35.7s) |   C |    60 | 17.9 |        
   19954 | 2020-12-31 20:11:35 |          MASTER-IAC | (22h 04m 02.66s , -30d 02m 46.2s) |   C |    60 | 16.6 |        
   20034 | 2020-12-31 20:12:55 |          MASTER-IAC | (22h 28m 56.24s , -22d 08m 55.8s) |   C |    60 | 17.8 |        
   20034 | 2020-12-31 20:12:55 |          MASTER-IAC | (22h 20m 10.73s , -22d 03m 57.2s) |   C |    60 | 17.5 |        
   20113 | 2020-12-31 20:14:14 |         MASTER-SAAO | (22h 49m 21.51s , -32d 06m 02.7s) |   C |    60 | 18.4 |        
   20114 | 2020-12-31 20:14:15 |          MASTER-IAC | (22h 31m 59.17s , -30d 07m 46.2s) |   C |    60 | 17.8 |        
   20114 | 2020-12-31 20:14:15 |          MASTER-IAC | (22h 22m 36.41s , -30d 02m 54.6s) |   C |    60 | 17.3 |        
   20195 | 2020-12-31 20:15:36 |          MASTER-IAC | (21h 56m 27.40s , -24d 08m 10.7s) |   C |    60 | 17.4 |        
   20195 | 2020-12-31 20:15:36 |          MASTER-IAC | (21h 47m 33.44s , -24d 03m 19.7s) |   C |    60 | 16.4 |        
   20199 | 2020-12-31 20:15:40 |         MASTER-SAAO | (22h 57m 43.85s , -30d 05m 10.9s) |   C |    60 | 18.3 |        
   20275 | 2020-12-31 20:16:56 |          MASTER-IAC | (22h 42m 11.15s , -28d 07m 24.2s) |   C |    60 | 17.8 |        
   20275 | 2020-12-31 20:16:56 |          MASTER-IAC | (22h 32m 59.39s , -28d 02m 30.3s) |   C |    60 | 17.4 |        
   20278 | 2020-12-31 20:17:00 |         MASTER-SAAO | (22h 56m 32.05s , -36d 05m 52.4s) |   C |    60 | 19.0 |        
   20354 | 2020-12-31 20:18:16 |          MASTER-IAC | (22h 10m 59.12s , -20d 08m 18.7s) |   C |    60 | 17.9 |        
   20354 | 2020-12-31 20:18:16 |          MASTER-IAC | (22h 02m 20.62s , -20d 03m 20.7s) |   C |    60 | 17.1 |        
   20358 | 2020-12-31 20:18:19 |         MASTER-SAAO | (22h 42m 18.66s , -34d 06m 43.1s) |   C |    60 | 18.5 |        
   20434 | 2020-12-31 20:19:35 |          MASTER-IAC | (22h 27m 56.16s , -20d 09m 25.0s) |   C |    60 | 17.8 |        
   20434 | 2020-12-31 20:19:35 |          MASTER-IAC | (22h 19m 17.67s , -20d 04m 25.5s) |   C |    60 | 17.4 |        
   20439 | 2020-12-31 20:19:41 |         MASTER-SAAO | (23h 01m 42.83s , -34d 06m 43.1s) |   C |    60 | 18.7 |        
   20519 | 2020-12-31 20:21:00 |         MASTER-SAAO | (22h 52m 43.46s , -38d 04m 51.3s) |   C |    60 | 18.7 |        
   20600 | 2020-12-31 20:22:21 |         MASTER-SAAO | (23h 07m 29.78s , -28d 07m 09.5s) |   C |    60 | 18.3 |        
   20680 | 2020-12-31 20:23:41 |         MASTER-SAAO | (23h 08m 20.51s , -32d 05m 29.8s) |   C |    60 | 18.5 |        
   20719 | 2020-12-31 20:24:20 |          MASTER-IAC | (22h 53m 47.99s , -26d 07m 47.5s) |   C |    60 | 17.9 |        
   20719 | 2020-12-31 20:24:20 |          MASTER-IAC | (22h 44m 46.92s , -26d 02m 51.7s) |   C |    60 | 17.6 |        
   20855 | 2020-12-31 20:26:36 |         MASTER-SAAO | (22h 36m 38.50s , -36d 04m 25.4s) |   C |    60 | 18.1 |        
   20999 | 2020-12-31 20:29:00 |          MASTER-IAC | (22h 49m 10.32s , -24d 07m 31.9s) |   C |    60 | 17.9 |        
   20999 | 2020-12-31 20:29:00 |          MASTER-IAC | (22h 40m 17.25s , -24d 02m 35.1s) |   C |    60 | 17.4 |        
   21025 | 2020-12-31 20:29:27 |         MASTER-SAAO | (22h 49m 23.73s , -32d 06m 47.8s) |   C |    60 | 17.9 |        
   21078 | 2020-12-31 20:30:20 |          MASTER-IAC | (22h 46m 10.15s , -22d 08m 32.4s) |   C |    60 | 17.6 |        
   21078 | 2020-12-31 20:30:20 |          MASTER-IAC | (22h 37m 24.97s , -22d 03m 33.8s) |   C |    60 | 17.0 |        
   21105 | 2020-12-31 20:30:46 |         MASTER-SAAO | (22h 57m 51.75s , -30d 06m 42.6s) |   C |    60 | 18.0 |        
   21158 | 2020-12-31 20:31:39 |          MASTER-IAC | (22h 28m 38.20s , -18d 07m 29.1s) |   C |    60 | 17.7 |        
   21158 | 2020-12-31 20:31:39 |          MASTER-IAC | (22h 20m 06.28s , -18d 02m 29.5s) |   C |    60 | 17.2 |        
   21186 | 2020-12-31 20:32:07 |         MASTER-SAAO | (22h 56m 29.41s , -36d 04m 45.2s) |   C |    60 | 18.6 |        
   21238 | 2020-12-31 20:33:00 |          MASTER-IAC | (22h 45m 04.74s , -20d 08m 32.7s) |   C |    60 | 17.7 |        
   21238 | 2020-12-31 20:33:00 |          MASTER-IAC | (22h 36m 26.56s , -20d 03m 33.7s) |   C |    60 | 17.0 |        
   21266 | 2020-12-31 20:33:27 |         MASTER-SAAO | (22h 42m 22.37s , -34d 06m 05.7s) |   C |    60 | 18.1 |        
   21318 | 2020-12-31 20:34:19 |          MASTER-IAC | (22h 30m 56.83s , -16d 09m 31.4s) |   C |    60 | 18.0 |        
   21318 | 2020-12-31 20:34:19 |          MASTER-IAC | (22h 22m 30.30s , -16d 04m 31.1s) |   C |    60 | 17.4 |        
   21346 | 2020-12-31 20:34:47 |         MASTER-SAAO | (23h 01m 45.45s , -34d 05m 11.5s) |   C |    60 | 18.4 |        
   21398 | 2020-12-31 20:35:39 |          MASTER-IAC | (22h 45m 33.33s , -18d 09m 17.6s) |   C |    60 | 17.7 |        
   21398 | 2020-12-31 20:35:39 |          MASTER-IAC | (22h 37m 01.39s , -18d 04m 18.2s) |   C |    60 | 17.3 |        
   21427 | 2020-12-31 20:36:08 |         MASTER-SAAO | (22h 52m 40.98s , -38d 05m 32.7s) |   C |    60 | 18.3 |        
   21478 | 2020-12-31 20:36:59 |          MASTER-IAC | (23h 03m 28.22s , -22d 08m 02.3s) |   C |    60 | 18.0 |        
   21478 | 2020-12-31 20:36:59 |          MASTER-IAC | (22h 54m 43.18s , -22d 03m 05.5s) |   C |    60 | 17.4 |        
   21509 | 2020-12-31 20:37:30 |         MASTER-SAAO | (23h 07m 27.44s , -28d 05m 12.2s) |   C |    60 | 17.8 |        
   21558 | 2020-12-31 20:38:19 |          MASTER-IAC | (23h 06m 38.24s , -24d 09m 23.7s) |   C |    60 | 17.7 |        
   21558 | 2020-12-31 20:38:19 |          MASTER-IAC | (22h 57m 45.17s , -24d 04m 26.9s) |   C |    60 | 17.6 |        
   21589 | 2020-12-31 20:38:50 |         MASTER-SAAO | (23h 08m 21.81s , -32d 06m 01.8s) |   C |    60 | 18.2 |        
   21637 | 2020-12-31 20:39:39 |          MASTER-IAC | (22h 53m 50.67s , -26d 07m 47.9s) |   C |    60 | 17.7 |        
   21637 | 2020-12-31 20:39:39 |          MASTER-IAC | (22h 44m 48.78s , -26d 02m 54.1s) |   C |    60 | 17.3 |        
   21717 | 2020-12-31 20:40:58 |          MASTER-IAC | (23h 02m 01.16s , -20d 08m 35.2s) |   C |    60 | 18.0 |        
   21717 | 2020-12-31 20:40:58 |          MASTER-IAC | (22h 53m 22.94s , -20d 03m 37.1s) |   C |    60 | 17.5 |        
   21763 | 2020-12-31 20:41:44 |         MASTER-SAAO | (22h 36m 43.08s , -36d 05m 53.0s) |   C |    60 | 17.6 |        
   21797 | 2020-12-31 20:42:18 |          MASTER-IAC | (22h 47m 36.70s , -16d 07m 36.4s) |   C |    60 | 17.7 |        
   21797 | 2020-12-31 20:42:18 |          MASTER-IAC | (22h 39m 10.16s , -16d 02m 36.7s) |   C |    60 | 17.2 |        
   21878 | 2020-12-31 20:43:39 |          MASTER-IAC | (22h 34m 56.10s , -14d 08m 36.3s) |   C |    60 | 17.9 |        
   21878 | 2020-12-31 20:43:39 |          MASTER-IAC | (22h 26m 34.33s , -14d 03m 35.9s) |   C |    60 | 17.4 |        
   21935 | 2020-12-31 20:44:36 |         MASTER-SAAO | (22h 49m 26.21s , -32d 06m 14.9s) |   C |    60 | 17.7 |        
   21957 | 2020-12-31 20:44:59 |          MASTER-IAC | (22h 49m 03.67s , -24d 09m 37.7s) |   C |    60 | 17.8 |        
   21957 | 2020-12-31 20:44:59 |          MASTER-IAC | (22h 40m 10.48s , -24d 04m 43.1s) |   C |    60 | 17.0 |        
   22014 | 2020-12-31 20:45:56 |         MASTER-SAAO | (22h 57m 51.62s , -30d 04m 57.5s) |   C |    60 | 17.8 |        
   22037 | 2020-12-31 20:46:19 |          MASTER-IAC | (22h 46m 15.79s , -22d 09m 26.3s) |   C |    60 | 17.5 |        
   22037 | 2020-12-31 20:46:19 |          MASTER-IAC | (22h 37m 30.53s , -22d 04m 30.8s) |   C |    60 | 17.0 |        
   22095 | 2020-12-31 20:47:16 |         MASTER-SAAO | (22h 56m 25.64s , -36d 05m 34.8s) |   C |    60 | 18.2 |        
   22117 | 2020-12-31 20:47:38 |          MASTER-IAC | (22h 43m 02.00s , -14d 02m 52.5s) |   C |    60 | 17.3 |        
   22197 | 2020-12-31 20:48:58 |          MASTER-IAC | (22h 28m 40.88s , -18d 09m 28.2s) |   C |    60 | 17.7 |        
   22197 | 2020-12-31 20:48:58 |          MASTER-IAC | (22h 20m 08.74s , -18d 04m 32.3s) |   C |    60 | 16.8 |        
   22278 | 2020-12-31 20:50:19 |          MASTER-IAC | (22h 45m 04.53s , -20d 08m 08.3s) |   C |    60 | 17.6 |        
   22278 | 2020-12-31 20:50:19 |          MASTER-IAC | (22h 36m 26.33s , -20d 03m 13.1s) |   C |    60 | 16.7 |        
   22357 | 2020-12-31 20:51:39 |          MASTER-IAC | (22h 30m 56.59s , -16d 08m 37.9s) |   C |    60 | 17.9 |        
   22357 | 2020-12-31 20:51:39 |          MASTER-IAC | (22h 22m 29.99s , -16d 03m 41.0s) |   C |    60 | 17.2 |        
   22376 | 2020-12-31 20:51:57 |         MASTER-SAAO | (23h 01m 44.16s , -34d 05m 43.6s) |   C |    60 | 18.0 |        
   22437 | 2020-12-31 20:52:58 |          MASTER-IAC | (22h 45m 27.35s , -18d 07m 40.8s) |   C |    60 | 17.6 |        
   22437 | 2020-12-31 20:52:58 |          MASTER-IAC | (22h 36m 55.44s , -18d 02m 44.7s) |   C |    60 | 17.1 |        
   22456 | 2020-12-31 20:53:17 |         MASTER-SAAO | (22h 52m 42.06s , -38d 06m 23.2s) |   C |    60 | 17.9 |        
   22517 | 2020-12-31 20:54:18 |          MASTER-IAC | (23h 03m 30.11s , -22d 08m 41.5s) |   C |    60 | 17.8 |        
   22517 | 2020-12-31 20:54:18 |          MASTER-IAC | (22h 54m 44.91s , -22d 03m 48.4s) |   C |    60 | 17.3 |        
   22536 | 2020-12-31 20:54:37 |         MASTER-SAAO | (23h 07m 34.93s , -28d 06m 49.3s) |   C |    60 | 17.4 |        
   22597 | 2020-12-31 20:55:38 |          MASTER-IAC | (23h 06m 34.98s , -24d 09m 42.4s) |   C |    60 | 17.6 |        
   22597 | 2020-12-31 20:55:38 |          MASTER-IAC | (22h 57m 41.89s , -24d 04m 50.3s) |   C |    60 | 17.3 |        
   22616 | 2020-12-31 20:55:57 |         MASTER-SAAO | (23h 08m 19.01s , -32d 05m 16.7s) |   C |    60 | 17.8 |        
   22677 | 2020-12-31 20:56:59 |          MASTER-IAC | (22h 53m 51.45s , -26d 09m 19.8s) |   C |    60 | 17.6 |        
   22677 | 2020-12-31 20:56:59 |          MASTER-IAC | (22h 44m 49.36s , -26d 04m 30.8s) |   C |    60 | 16.9 |        
   22757 | 2020-12-31 20:58:19 |          MASTER-IAC | (23h 02m 03.23s , -20d 08m 00.7s) |   C |    60 | 17.9 |        
   22757 | 2020-12-31 20:58:19 |          MASTER-IAC | (22h 53m 25.20s , -20d 03m 05.0s) |   C |    60 | 17.0 |        
   22837 | 2020-12-31 20:59:38 |          MASTER-IAC | (22h 47m 38.89s , -16d 09m 29.4s) |   C |    60 | 17.5 |        
   22837 | 2020-12-31 20:59:38 |          MASTER-IAC | (22h 39m 12.42s , -16d 04m 31.2s) |   C |    60 | 16.9 |        
   22917 | 2020-12-31 21:00:58 |          MASTER-IAC | (22h 34m 55.44s , -14d 08m 13.3s) |   C |    60 | 17.6 |        
   22917 | 2020-12-31 21:00:58 |          MASTER-IAC | (22h 26m 33.72s , -14d 03m 14.7s) |   C |    60 | 17.1 |        
   22998 | 2020-12-31 21:02:19 |          MASTER-IAC | (22h 49m 02.89s , -24d 08m 45.8s) |   C |    60 | 17.4 |        
   22998 | 2020-12-31 21:02:19 |          MASTER-IAC | (22h 40m 09.52s , -24d 03m 55.3s) |   C |    60 | 16.4 |        
   23078 | 2020-12-31 21:03:39 |          MASTER-IAC | (22h 46m 08.56s , -22d 07m 45.8s) |   C |    60 | 17.4 |        
   23078 | 2020-12-31 21:03:39 |          MASTER-IAC | (22h 37m 23.22s , -22d 02m 53.5s) |   C |    60 | 16.3 |        
   23158 | 2020-12-31 21:04:59 |          MASTER-IAC | (22h 43m 03.97s , -14d 03m 50.1s) |   C |    60 | 17.0 |        
   23238 | 2020-12-31 21:06:20 |          MASTER-IAC | (23h 02m 16.97s , -18d 09m 48.2s) |   C |    60 | 17.7 |        
   23238 | 2020-12-31 21:06:20 |          MASTER-IAC | (22h 53m 45.06s , -18d 04m 52.5s) |   C |    60 | 16.9 |        
   23318 | 2020-12-31 21:07:40 |          MASTER-IAC | (22h 55m 54.59s , -16d 04m 40.0s) |   C |    60 | 16.6 |        
   23398 | 2020-12-31 21:08:59 |          MASTER-IAC | (23h 15m 16.56s , -24d 03m 12.1s) |   C |    60 | 17.2 |        
   23478 | 2020-12-31 21:10:19 |          MASTER-IAC | (22h 28m 40.61s , -18d 09m 20.7s) |   C |    60 | 17.2 |        
   23558 | 2020-12-31 21:11:39 |          MASTER-IAC | (22h 45m 03.81s , -20d 07m 52.6s) |   C |    60 | 17.1 |        
   23558 | 2020-12-31 21:11:39 |          MASTER-IAC | (22h 36m 25.27s , -20d 03m 01.5s) |   C |    60 | 15.4 |        
   23638 | 2020-12-31 21:12:59 |          MASTER-IAC | (22h 30m 56.98s , -16d 08m 48.6s) |   C |    60 | 17.5 |        
   23638 | 2020-12-31 21:12:59 |          MASTER-IAC | (22h 22m 29.69s , -16d 03m 57.6s) |   C |    60 | 14.3 |        
   23717 | 2020-12-31 21:14:19 |          MASTER-IAC | (22h 45m 28.47s , -18d 07m 51.0s) |   C |    60 | 17.3 |        
   23717 | 2020-12-31 21:14:19 |          MASTER-IAC | (22h 36m 56.25s , -18d 02m 58.5s) |   C |    60 | 16.2 |        
   23797 | 2020-12-31 21:15:38 |          MASTER-IAC | (23h 03m 30.86s , -22d 08m 51.6s) |   C |    60 | 17.6 |        
   23797 | 2020-12-31 21:15:38 |          MASTER-IAC | (22h 54m 45.54s , -22d 04m 00.7s) |   C |    60 | 16.6 |        
   23879 | 2020-12-31 21:17:00 |          MASTER-IAC | (23h 06m 35.04s , -24d 09m 52.5s) |   C |    60 | 17.4 |        
   23879 | 2020-12-31 21:17:00 |          MASTER-IAC | (22h 57m 41.72s , -24d 05m 03.1s) |   C |    60 | 16.6 |        
   23959 | 2020-12-31 21:18:20 |          MASTER-IAC | (23h 02m 06.99s , -20d 09m 41.9s) |   C |    60 | 17.5 |        
   23959 | 2020-12-31 21:18:20 |          MASTER-IAC | (22h 53m 28.70s , -20d 04m 50.4s) |   C |    60 | 16.4 |        
   24039 | 2020-12-31 21:19:40 |          MASTER-IAC | (22h 47m 38.65s , -16d 08m 01.4s) |   C |    60 | 17.2 |        
   24039 | 2020-12-31 21:19:40 |          MASTER-IAC | (22h 39m 11.99s , -16d 03m 08.9s) |   C |    60 | 15.9 |        
   24119 | 2020-12-31 21:21:00 |          MASTER-IAC | (22h 34m 53.45s , -14d 09m 49.4s) |   C |    60 | 17.3 |        
   24119 | 2020-12-31 21:21:00 |          MASTER-IAC | (22h 26m 30.98s , -14d 04m 59.9s) |   C |    60 | 14.4 |        
   24199 | 2020-12-31 21:22:20 |          MASTER-IAC | (22h 43m 05.07s , -14d 03m 18.1s) |   C |    60 | 16.4 |        
   24278 | 2020-12-31 21:23:40 |          MASTER-IAC | (23h 02m 18.17s , -18d 08m 55.1s) |   C |    60 | 17.4 |        
   24278 | 2020-12-31 21:23:40 |          MASTER-IAC | (22h 53m 46.13s , -18d 04m 04.2s) |   C |    60 | 16.4 |        
   24358 | 2020-12-31 21:24:59 |          MASTER-IAC | (22h 55m 47.84s , -16d 03m 03.6s) |   C |    60 | 16.2 |        
   24438 | 2020-12-31 21:26:19 |          MASTER-IAC | (23h 15m 20.18s , -24d 04m 06.5s) |   C |    60 | 16.7 |        
   25245 | 2020-12-31 21:39:46 |          MASTER-IAC | (23h 02m 22.85s , -18d 09m 38.9s) |   C |    60 | 17.3 |        
   25245 | 2020-12-31 21:39:46 |          MASTER-IAC | (22h 53m 49.71s , -18d 04m 53.8s) |   C |    60 | 14.5 |        
   25325 | 2020-12-31 21:41:06 |          MASTER-IAC | (22h 55m 50.60s , -16d 03m 31.8s) |   C |    60 | 15.3 |        
   25407 | 2020-12-31 21:42:28 |          MASTER-IAC | (23h 15m 15.34s , -24d 05m 06.3s) |   C |    60 | 15.8 |        
  100958 | 2021-01-01 18:41:40 |         MASTER-SAAO | (22h 02m 20.74s , -30d 05m 47.3s) |   C |    60 | 16.8 |        
  101038 | 2021-01-01 18:42:59 |         MASTER-SAAO | (22h 03m 08.03s , -24d 06m 50.1s) |   C |    60 | 16.8 |        
  101324 | 2021-01-01 18:47:45 |         MASTER-SAAO | (21h 54m 56.62s , -28d 04m 49.8s) |   C |    60 | 17.2 |        
  104209 | 2021-01-01 19:35:50 |         MASTER-SAAO | (22h 02m 23.76s , -30d 06m 02.0s) |   C |    60 | 18.0 |        
  104296 | 2021-01-01 19:37:17 |         MASTER-SAAO | (22h 03m 15.73s , -24d 05m 06.5s) |   C |    60 | 17.1 |        
  105352 | 2021-01-01 19:54:53 |         MASTER-SAAO | (21h 55m 02.41s , -28d 05m 53.2s) |   C |    60 | 17.0 |        
  105637 | 2021-01-01 19:59:39 |         MASTER-SAAO | (22h 02m 20.80s , -30d 05m 59.0s) |   C |    60 | 17.1 |        
Filter C is a clear (unfiltred) band. 


The observation and reduction will continue. 
The message may be cited.



#######################################################################################
#######################################################################################

  ID = 3594
TYPE = 35
DAYS = 1


MASTER-SAAO robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in South Africa (South African Astronomical Observatory) started inspect of the FERMI GRB201231.61 (trigger No 631118376,22h 13m 52.80s , -26d 13m 48.0s, R=12.51) errorbox  16772 sec after notice time and 16799 sec after trigger time at 2020-12-31 19:19:31 UT, with upper limit up to  19.0 mag. Observations started at twilight.  The observations began at zenith distance = 68 deg. The sun  altitude  is -16.7 deg. 

MASTER-IAC robotic telescope  located in Spain (IAC Teide Observatory) started inspect of the FERMI GRB201231.61 errorbox  17135 sec after notice time and 17162 sec after trigger time at 2020-12-31 19:25:34 UT, with upper limit up to  18.8 mag. Observations started at twilight.  The observations began at zenith distance = 66 deg. The sun  altitude  is -14.6 deg. 

The galactic latitude b = -56 deg., longitude l = 26 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1516086

We obtain a following upper limits.  

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________

   16830 | 2020-12-31 19:19:31 |         MASTER-SAAO | (22h 07m 13.35s , -26d 07m 02.5s) |   C |    60 | 18.0 |        
   16910 | 2020-12-31 19:20:51 |         MASTER-SAAO | (22h 13m 08.29s , -28d 06m 47.4s) |   C |    60 | 15.9 |        
   17193 | 2020-12-31 19:25:34 |          MASTER-IAC | (22h 14m 06.85s , -24d 08m 08.5s) |   C |    60 | 18.0 |        
   17193 | 2020-12-31 19:25:34 |          MASTER-IAC | (22h 05m 13.30s , -24d 03m 09.9s) |   C |    60 | 17.8 |        
   17273 | 2020-12-31 19:26:54 |          MASTER-IAC | (22h 11m 40.95s , -22d 07m 08.3s) |   C |    60 | 18.3 |        
   17273 | 2020-12-31 19:26:54 |          MASTER-IAC | (22h 02m 55.34s , -22d 02m 09.3s) |   C |    60 | 17.8 |        
   17353 | 2020-12-31 19:28:14 |          MASTER-IAC | (22h 05m 58.56s , -28d 08m 38.1s) |   C |    60 | 18.2 |        
   17353 | 2020-12-31 19:28:14 |          MASTER-IAC | (21h 56m 46.61s , -28d 03m 43.8s) |   C |    60 | 17.8 |        
   17433 | 2020-12-31 19:29:34 |          MASTER-IAC | (22h 00m 24.73s , -26d 07m 04.0s) |   C |    60 | 18.2 |        
   17433 | 2020-12-31 19:29:34 |          MASTER-IAC | (21h 51m 22.63s , -26d 02m 08.6s) |   C |    60 | 18.0 |        
   17513 | 2020-12-31 19:30:54 |          MASTER-IAC | (22h 31m 31.97s , -24d 07m 55.7s) |   C |    60 | 18.7 |        
   17513 | 2020-12-31 19:30:54 |          MASTER-IAC | (22h 22m 38.57s , -24d 02m 59.6s) |   C |    60 | 18.4 |        
   17593 | 2020-12-31 19:32:14 |          MASTER-IAC | (22h 35m 57.50s , -26d 06m 57.1s) |   C |    60 | 18.8 |        
   17593 | 2020-12-31 19:32:14 |          MASTER-IAC | (22h 26m 55.39s , -26d 02m 03.2s) |   C |    60 | 18.3 |        
   17673 | 2020-12-31 19:33:34 |          MASTER-IAC | (22h 13m 29.11s , -30d 07m 53.5s) |   C |    60 | 18.7 |        
   17673 | 2020-12-31 19:33:34 |          MASTER-IAC | (22h 04m 06.40s , -30d 03m 02.8s) |   C |    60 | 17.8 |        
   17753 | 2020-12-31 19:34:54 |          MASTER-IAC | (22h 28m 53.14s , -22d 08m 59.7s) |   C |    60 | 18.4 |        
   17753 | 2020-12-31 19:34:54 |          MASTER-IAC | (22h 20m 07.48s , -22d 04m 04.0s) |   C |    60 | 18.1 |        
   17833 | 2020-12-31 19:36:14 |          MASTER-IAC | (22h 31m 58.26s , -30d 08m 30.9s) |   C |    60 | 18.5 |        
   17833 | 2020-12-31 19:36:14 |          MASTER-IAC | (22h 22m 35.49s , -30d 03m 40.3s) |   C |    60 | 18.4 |        
   17913 | 2020-12-31 19:37:34 |          MASTER-IAC | (21h 56m 31.98s , -24d 06m 55.8s) |   C |    60 | 18.4 |        
   17913 | 2020-12-31 19:37:34 |          MASTER-IAC | (21h 47m 38.52s , -24d 02m 02.9s) |   C |    60 | 17.9 |        
   17993 | 2020-12-31 19:38:54 |          MASTER-IAC | (22h 42m 15.36s , -28d 09m 00.8s) |   C |    60 | 18.7 |        
   17993 | 2020-12-31 19:38:54 |          MASTER-IAC | (22h 33m 03.33s , -28d 04m 09.7s) |   C |    60 | 18.4 |        
   18073 | 2020-12-31 19:40:14 |          MASTER-IAC | (22h 11m 00.99s , -20d 07m 11.7s) |   C |    60 | 18.5 |        
   18073 | 2020-12-31 19:40:14 |          MASTER-IAC | (22h 02m 22.28s , -20d 02m 17.0s) |   C |    60 | 18.0 |        
   18152 | 2020-12-31 19:41:33 |          MASTER-IAC | (22h 27m 57.06s , -20d 08m 04.3s) |   C |    60 | 18.5 |        
   18152 | 2020-12-31 19:41:33 |          MASTER-IAC | (22h 19m 18.31s , -20d 03m 08.8s) |   C |    60 | 18.1 |        
   18232 | 2020-12-31 19:42:53 |          MASTER-IAC | (22h 14m 00.61s , -24d 07m 00.8s) |   C |    60 | 18.2 |        
   18232 | 2020-12-31 19:42:53 |          MASTER-IAC | (22h 05m 07.04s , -24d 02m 08.2s) |   C |    60 | 17.9 |        
   18312 | 2020-12-31 19:44:13 |          MASTER-IAC | (22h 11m 42.81s , -22d 08m 01.3s) |   C |    60 | 18.3 |        
   18312 | 2020-12-31 19:44:13 |          MASTER-IAC | (22h 02m 57.02s , -22d 03m 06.9s) |   C |    60 | 17.9 |        
   18392 | 2020-12-31 19:45:33 |          MASTER-IAC | (22h 05m 54.28s , -28d 08m 59.8s) |   C |    60 | 18.1 |        
   18392 | 2020-12-31 19:45:33 |          MASTER-IAC | (21h 56m 42.01s , -28d 04m 10.0s) |   C |    60 | 17.5 |        
   18472 | 2020-12-31 19:46:53 |          MASTER-IAC | (22h 00m 24.14s , -26d 08m 53.4s) |   C |    60 | 18.1 |        
   18472 | 2020-12-31 19:46:53 |          MASTER-IAC | (21h 51m 21.64s , -26d 04m 02.5s) |   C |    60 | 17.5 |        
   18553 | 2020-12-31 19:48:14 |          MASTER-IAC | (22h 31m 35.67s , -24d 07m 08.9s) |   C |    60 | 18.5 |        
   18553 | 2020-12-31 19:48:14 |          MASTER-IAC | (22h 22m 42.14s , -24d 02m 15.7s) |   C |    60 | 18.1 |        
   18633 | 2020-12-31 19:49:34 |          MASTER-IAC | (22h 36m 00.24s , -26d 09m 03.1s) |   C |    60 | 18.5 |        
   18633 | 2020-12-31 19:49:34 |          MASTER-IAC | (22h 26m 57.75s , -26d 04m 11.6s) |   C |    60 | 18.0 |        
   18659 | 2020-12-31 19:50:00 |         MASTER-SAAO | (22h 07m 15.50s , -26d 06m 51.6s) |   C |    60 | 17.0 |        
   18713 | 2020-12-31 19:50:54 |          MASTER-IAC | (22h 13m 28.90s , -30d 07m 16.1s) |   C |    60 | 18.3 |        
   18713 | 2020-12-31 19:50:54 |          MASTER-IAC | (22h 04m 05.81s , -30d 02m 28.9s) |   C |    60 | 17.3 |        
   18739 | 2020-12-31 19:51:20 |         MASTER-SAAO | (22h 13m 10.34s , -28d 06m 19.8s) |   C |    60 | 17.8 |        
   18794 | 2020-12-31 19:52:15 |          MASTER-IAC | (22h 28m 54.39s , -22d 08m 09.8s) |   C |    60 | 18.3 |        
   18794 | 2020-12-31 19:52:15 |          MASTER-IAC | (22h 20m 08.54s , -22d 03m 16.6s) |   C |    60 | 17.9 |        
   18874 | 2020-12-31 19:53:35 |          MASTER-IAC | (22h 31m 52.58s , -30d 07m 09.6s) |   C |    60 | 18.2 |        
   18874 | 2020-12-31 19:53:35 |          MASTER-IAC | (22h 22m 29.66s , -30d 02m 21.7s) |   C |    60 | 18.1 |        
   18953 | 2020-12-31 19:54:55 |          MASTER-IAC | (21h 56m 35.51s , -24d 08m 00.4s) |   C |    60 | 17.8 |        
   18953 | 2020-12-31 19:54:55 |          MASTER-IAC | (21h 47m 41.66s , -24d 03m 10.1s) |   C |    60 | 17.4 |        
   19033 | 2020-12-31 19:56:14 |          MASTER-IAC | (22h 42m 12.34s , -28d 09m 12.7s) |   C |    60 | 18.3 |        
   19033 | 2020-12-31 19:56:14 |          MASTER-IAC | (22h 32m 59.99s , -28d 04m 23.2s) |   C |    60 | 18.0 |        
   19113 | 2020-12-31 19:57:34 |          MASTER-IAC | (22h 11m 00.89s , -20d 08m 42.0s) |   C |    60 | 18.1 |        
   19113 | 2020-12-31 19:57:34 |          MASTER-IAC | (22h 02m 21.80s , -20d 03m 49.0s) |   C |    60 | 17.6 |        
   19193 | 2020-12-31 19:58:54 |          MASTER-IAC | (22h 28m 00.19s , -20d 07m 28.2s) |   C |    60 | 18.1 |        
   19193 | 2020-12-31 19:58:54 |          MASTER-IAC | (22h 19m 21.16s , -20d 02m 35.2s) |   C |    60 | 17.8 |        
   19273 | 2020-12-31 20:00:14 |          MASTER-IAC | (22h 14m 03.76s , -24d 08m 52.5s) |   C |    60 | 17.8 |        
   19273 | 2020-12-31 20:00:14 |          MASTER-IAC | (22h 05m 09.70s , -24d 04m 02.2s) |   C |    60 | 17.3 |        
   19353 | 2020-12-31 20:01:34 |          MASTER-IAC | (22h 11m 42.66s , -22d 07m 21.8s) |   C |    60 | 18.0 |        
   19353 | 2020-12-31 20:01:34 |          MASTER-IAC | (22h 02m 56.57s , -22d 02m 30.1s) |   C |    60 | 17.5 |        
   19411 | 2020-12-31 20:02:33 |         MASTER-SAAO | (22h 42m 17.77s , -34d 04m 56.2s) |   C |    60 | 18.8 |        
   19433 | 2020-12-31 20:02:54 |          MASTER-IAC | (22h 05m 55.28s , -28d 08m 06.4s) |   C |    60 | 17.7 |        
   19433 | 2020-12-31 20:02:54 |          MASTER-IAC | (21h 56m 42.46s , -28d 03m 21.0s) |   C |    60 | 16.9 |        
   19706 | 2020-12-31 20:07:27 |         MASTER-SAAO | (22h 07m 15.96s , -26d 06m 29.5s) |   C |    60 | 14.9 |        
   19713 | 2020-12-31 20:07:34 |          MASTER-IAC | (22h 00m 24.65s , -26d 08m 11.4s) |   C |    60 | 17.5 |        
   19713 | 2020-12-31 20:07:34 |          MASTER-IAC | (21h 51m 22.18s , -26d 03m 17.1s) |   C |    60 | 16.6 |        
   19785 | 2020-12-31 20:08:47 |         MASTER-SAAO | (22h 13m 09.79s , -28d 05m 60.0s) |   C |    60 | 17.0 |        
   19792 | 2020-12-31 20:08:53 |          MASTER-IAC | (22h 31m 31.80s , -24d 09m 22.1s) |   C |    60 | 18.1 |        
   19792 | 2020-12-31 20:08:54 |          MASTER-IAC | (22h 22m 38.42s , -24d 04m 22.8s) |   C |    60 | 17.6 |        
   19865 | 2020-12-31 20:10:07 |         MASTER-SAAO | (22h 36m 41.12s , -36d 04m 57.8s) |   C |    60 | 18.7 |        
   19874 | 2020-12-31 20:10:15 |          MASTER-IAC | (22h 36m 03.14s , -26d 08m 56.1s) |   C |    60 | 18.0 |        
   19874 | 2020-12-31 20:10:15 |          MASTER-IAC | (22h 27m 01.00s , -26d 03m 58.7s) |   C |    60 | 17.6 |        
   19954 | 2020-12-31 20:11:35 |          MASTER-IAC | (22h 13m 25.76s , -30d 07m 35.7s) |   C |    60 | 17.9 |        
   19954 | 2020-12-31 20:11:35 |          MASTER-IAC | (22h 04m 02.66s , -30d 02m 46.2s) |   C |    60 | 16.6 |        
   20034 | 2020-12-31 20:12:55 |          MASTER-IAC | (22h 28m 56.24s , -22d 08m 55.8s) |   C |    60 | 17.8 |        
   20034 | 2020-12-31 20:12:55 |          MASTER-IAC | (22h 20m 10.73s , -22d 03m 57.2s) |   C |    60 | 17.5 |        
   20113 | 2020-12-31 20:14:14 |         MASTER-SAAO | (22h 49m 21.51s , -32d 06m 02.7s) |   C |    60 | 18.4 |        
   20114 | 2020-12-31 20:14:15 |          MASTER-IAC | (22h 31m 59.17s , -30d 07m 46.2s) |   C |    60 | 17.8 |        
   20114 | 2020-12-31 20:14:15 |          MASTER-IAC | (22h 22m 36.41s , -30d 02m 54.6s) |   C |    60 | 17.3 |        
   20195 | 2020-12-31 20:15:36 |          MASTER-IAC | (21h 47m 33.44s , -24d 03m 19.7s) |   C |    60 | 16.4 |        
   20195 | 2020-12-31 20:15:36 |          MASTER-IAC | (21h 56m 27.40s , -24d 08m 10.7s) |   C |    60 | 17.4 |        
   20199 | 2020-12-31 20:15:40 |         MASTER-SAAO | (22h 57m 43.85s , -30d 05m 10.9s) |   C |    60 | 18.3 |        
   20275 | 2020-12-31 20:16:56 |          MASTER-IAC | (22h 42m 11.15s , -28d 07m 24.2s) |   C |    60 | 17.8 |        
   20275 | 2020-12-31 20:16:56 |          MASTER-IAC | (22h 32m 59.39s , -28d 02m 30.3s) |   C |    60 | 17.4 |        
   20278 | 2020-12-31 20:17:00 |         MASTER-SAAO | (22h 56m 32.05s , -36d 05m 52.4s) |   C |    60 | 19.0 |        
   20354 | 2020-12-31 20:18:16 |          MASTER-IAC | (22h 10m 59.12s , -20d 08m 18.7s) |   C |    60 | 17.9 |        
   20354 | 2020-12-31 20:18:16 |          MASTER-IAC | (22h 02m 20.62s , -20d 03m 20.7s) |   C |    60 | 17.1 |        
   20358 | 2020-12-31 20:18:19 |         MASTER-SAAO | (22h 42m 18.66s , -34d 06m 43.1s) |   C |    60 | 18.5 |        
   20434 | 2020-12-31 20:19:35 |          MASTER-IAC | (22h 27m 56.16s , -20d 09m 25.0s) |   C |    60 | 17.8 |        
   20434 | 2020-12-31 20:19:35 |          MASTER-IAC | (22h 19m 17.67s , -20d 04m 25.5s) |   C |    60 | 17.4 |        
   20439 | 2020-12-31 20:19:41 |         MASTER-SAAO | (23h 01m 42.83s , -34d 06m 43.1s) |   C |    60 | 18.7 |        
   20519 | 2020-12-31 20:21:00 |         MASTER-SAAO | (22h 52m 43.46s , -38d 04m 51.3s) |   C |    60 | 18.7 |        
   20600 | 2020-12-31 20:22:21 |         MASTER-SAAO | (23h 07m 29.78s , -28d 07m 09.5s) |   C |    60 | 18.3 |        
   20680 | 2020-12-31 20:23:41 |         MASTER-SAAO | (23h 08m 20.51s , -32d 05m 29.8s) |   C |    60 | 18.5 |        
   20719 | 2020-12-31 20:24:20 |          MASTER-IAC | (22h 53m 47.99s , -26d 07m 47.5s) |   C |    60 | 17.9 |        
   20719 | 2020-12-31 20:24:20 |          MASTER-IAC | (22h 44m 46.92s , -26d 02m 51.7s) |   C |    60 | 17.6 |        
   20855 | 2020-12-31 20:26:36 |         MASTER-SAAO | (22h 36m 38.50s , -36d 04m 25.4s) |   C |    60 | 18.1 |        
   20999 | 2020-12-31 20:29:00 |          MASTER-IAC | (22h 49m 10.32s , -24d 07m 31.9s) |   C |    60 | 17.9 |        
   20999 | 2020-12-31 20:29:00 |          MASTER-IAC | (22h 40m 17.25s , -24d 02m 35.1s) |   C |    60 | 17.4 |        
   21025 | 2020-12-31 20:29:27 |         MASTER-SAAO | (22h 49m 23.73s , -32d 06m 47.8s) |   C |    60 | 17.9 |        
   21078 | 2020-12-31 20:30:20 |          MASTER-IAC | (22h 46m 10.15s , -22d 08m 32.4s) |   C |    60 | 17.6 |        
   21078 | 2020-12-31 20:30:20 |          MASTER-IAC | (22h 37m 24.97s , -22d 03m 33.8s) |   C |    60 | 17.0 |        
   21105 | 2020-12-31 20:30:46 |         MASTER-SAAO | (22h 57m 51.75s , -30d 06m 42.6s) |   C |    60 | 18.0 |        
   21158 | 2020-12-31 20:31:39 |          MASTER-IAC | (22h 28m 38.20s , -18d 07m 29.1s) |   C |    60 | 17.7 |        
   21158 | 2020-12-31 20:31:39 |          MASTER-IAC | (22h 20m 06.28s , -18d 02m 29.5s) |   C |    60 | 17.2 |        
   21186 | 2020-12-31 20:32:07 |         MASTER-SAAO | (22h 56m 29.41s , -36d 04m 45.2s) |   C |    60 | 18.6 |        
   21238 | 2020-12-31 20:33:00 |          MASTER-IAC | (22h 45m 04.74s , -20d 08m 32.7s) |   C |    60 | 17.7 |        
   21238 | 2020-12-31 20:33:00 |          MASTER-IAC | (22h 36m 26.56s , -20d 03m 33.7s) |   C |    60 | 17.0 |        
   21266 | 2020-12-31 20:33:27 |         MASTER-SAAO | (22h 42m 22.37s , -34d 06m 05.7s) |   C |    60 | 18.1 |        
   21318 | 2020-12-31 20:34:19 |          MASTER-IAC | (22h 30m 56.83s , -16d 09m 31.4s) |   C |    60 | 18.0 |        
   21318 | 2020-12-31 20:34:19 |          MASTER-IAC | (22h 22m 30.30s , -16d 04m 31.1s) |   C |    60 | 17.4 |        
   21346 | 2020-12-31 20:34:47 |         MASTER-SAAO | (23h 01m 45.45s , -34d 05m 11.5s) |   C |    60 | 18.4 |        
   21398 | 2020-12-31 20:35:39 |          MASTER-IAC | (22h 45m 33.33s , -18d 09m 17.6s) |   C |    60 | 17.7 |        
   21398 | 2020-12-31 20:35:39 |          MASTER-IAC | (22h 37m 01.39s , -18d 04m 18.2s) |   C |    60 | 17.3 |        
   21427 | 2020-12-31 20:36:08 |         MASTER-SAAO | (22h 52m 40.98s , -38d 05m 32.7s) |   C |    60 | 18.3 |        
   21478 | 2020-12-31 20:36:59 |          MASTER-IAC | (23h 03m 28.22s , -22d 08m 02.3s) |   C |    60 | 18.0 |        
   21478 | 2020-12-31 20:36:59 |          MASTER-IAC | (22h 54m 43.18s , -22d 03m 05.5s) |   C |    60 | 17.4 |        
   21509 | 2020-12-31 20:37:30 |         MASTER-SAAO | (23h 07m 27.44s , -28d 05m 12.2s) |   C |    60 | 17.8 |        
   21558 | 2020-12-31 20:38:19 |          MASTER-IAC | (23h 06m 38.24s , -24d 09m 23.7s) |   C |    60 | 17.7 |        
   21558 | 2020-12-31 20:38:19 |          MASTER-IAC | (22h 57m 45.17s , -24d 04m 26.9s) |   C |    60 | 17.6 |        
   21589 | 2020-12-31 20:38:50 |         MASTER-SAAO | (23h 08m 21.81s , -32d 06m 01.8s) |   C |    60 | 18.2 |        
   21637 | 2020-12-31 20:39:39 |          MASTER-IAC | (22h 53m 50.67s , -26d 07m 47.9s) |   C |    60 | 17.7 |        
   21637 | 2020-12-31 20:39:39 |          MASTER-IAC | (22h 44m 48.78s , -26d 02m 54.1s) |   C |    60 | 17.3 |        
   21717 | 2020-12-31 20:40:58 |          MASTER-IAC | (23h 02m 01.16s , -20d 08m 35.2s) |   C |    60 | 18.0 |        
   21717 | 2020-12-31 20:40:58 |          MASTER-IAC | (22h 53m 22.94s , -20d 03m 37.1s) |   C |    60 | 17.5 |        
   21763 | 2020-12-31 20:41:44 |         MASTER-SAAO | (22h 36m 43.08s , -36d 05m 53.0s) |   C |    60 | 17.6 |        
   21797 | 2020-12-31 20:42:18 |          MASTER-IAC | (22h 47m 36.70s , -16d 07m 36.4s) |   C |    60 | 17.7 |        
   21797 | 2020-12-31 20:42:18 |          MASTER-IAC | (22h 39m 10.16s , -16d 02m 36.7s) |   C |    60 | 17.2 |        
   21878 | 2020-12-31 20:43:39 |          MASTER-IAC | (22h 34m 56.10s , -14d 08m 36.3s) |   C |    60 | 17.9 |        
   21878 | 2020-12-31 20:43:39 |          MASTER-IAC | (22h 26m 34.33s , -14d 03m 35.9s) |   C |    60 | 17.4 |        
   21935 | 2020-12-31 20:44:36 |         MASTER-SAAO | (22h 49m 26.21s , -32d 06m 14.9s) |   C |    60 | 17.7 |        
   21957 | 2020-12-31 20:44:59 |          MASTER-IAC | (22h 49m 03.67s , -24d 09m 37.7s) |   C |    60 | 17.8 |        
   21957 | 2020-12-31 20:44:59 |          MASTER-IAC | (22h 40m 10.48s , -24d 04m 43.1s) |   C |    60 | 17.0 |        
   22014 | 2020-12-31 20:45:56 |         MASTER-SAAO | (22h 57m 51.62s , -30d 04m 57.5s) |   C |    60 | 17.8 |        
   22037 | 2020-12-31 20:46:19 |          MASTER-IAC | (22h 46m 15.79s , -22d 09m 26.3s) |   C |    60 | 17.5 |        
   22037 | 2020-12-31 20:46:19 |          MASTER-IAC | (22h 37m 30.53s , -22d 04m 30.8s) |   C |    60 | 17.0 |        
   22095 | 2020-12-31 20:47:16 |         MASTER-SAAO | (22h 56m 25.64s , -36d 05m 34.8s) |   C |    60 | 18.2 |        
   22117 | 2020-12-31 20:47:38 |          MASTER-IAC | (22h 43m 02.00s , -14d 02m 52.5s) |   C |    60 | 17.3 |        
   22197 | 2020-12-31 20:48:58 |          MASTER-IAC | (22h 28m 40.88s , -18d 09m 28.2s) |   C |    60 | 17.7 |        
   22197 | 2020-12-31 20:48:58 |          MASTER-IAC | (22h 20m 08.74s , -18d 04m 32.3s) |   C |    60 | 16.8 |        
   22278 | 2020-12-31 20:50:19 |          MASTER-IAC | (22h 45m 04.53s , -20d 08m 08.3s) |   C |    60 | 17.6 |        
   22278 | 2020-12-31 20:50:19 |          MASTER-IAC | (22h 36m 26.33s , -20d 03m 13.1s) |   C |    60 | 16.7 |        
   22357 | 2020-12-31 20:51:39 |          MASTER-IAC | (22h 30m 56.59s , -16d 08m 37.9s) |   C |    60 | 17.9 |        
   22357 | 2020-12-31 20:51:39 |          MASTER-IAC | (22h 22m 29.99s , -16d 03m 41.0s) |   C |    60 | 17.2 |        
   22376 | 2020-12-31 20:51:57 |         MASTER-SAAO | (23h 01m 44.16s , -34d 05m 43.6s) |   C |    60 | 18.0 |        
   22437 | 2020-12-31 20:52:58 |          MASTER-IAC | (22h 45m 27.35s , -18d 07m 40.8s) |   C |    60 | 17.6 |        
   22437 | 2020-12-31 20:52:58 |          MASTER-IAC | (22h 36m 55.44s , -18d 02m 44.7s) |   C |    60 | 17.1 |        
   22456 | 2020-12-31 20:53:17 |         MASTER-SAAO | (22h 52m 42.06s , -38d 06m 23.2s) |   C |    60 | 17.9 |        
   22517 | 2020-12-31 20:54:18 |          MASTER-IAC | (23h 03m 30.11s , -22d 08m 41.5s) |   C |    60 | 17.8 |        
   22517 | 2020-12-31 20:54:18 |          MASTER-IAC | (22h 54m 44.91s , -22d 03m 48.4s) |   C |    60 | 17.3 |        
   22536 | 2020-12-31 20:54:37 |         MASTER-SAAO | (23h 07m 34.93s , -28d 06m 49.3s) |   C |    60 | 17.4 |        
   22597 | 2020-12-31 20:55:38 |          MASTER-IAC | (23h 06m 34.98s , -24d 09m 42.4s) |   C |    60 | 17.6 |        
   22597 | 2020-12-31 20:55:38 |          MASTER-IAC | (22h 57m 41.89s , -24d 04m 50.3s) |   C |    60 | 17.3 |        
   22616 | 2020-12-31 20:55:57 |         MASTER-SAAO | (23h 08m 19.01s , -32d 05m 16.7s) |   C |    60 | 17.8 |        
   22677 | 2020-12-31 20:56:59 |          MASTER-IAC | (22h 53m 51.45s , -26d 09m 19.8s) |   C |    60 | 17.6 |        
   22677 | 2020-12-31 20:56:59 |          MASTER-IAC | (22h 44m 49.36s , -26d 04m 30.8s) |   C |    60 | 16.9 |        
   22757 | 2020-12-31 20:58:19 |          MASTER-IAC | (23h 02m 03.23s , -20d 08m 00.7s) |   C |    60 | 17.9 |        
   22757 | 2020-12-31 20:58:19 |          MASTER-IAC | (22h 53m 25.20s , -20d 03m 05.0s) |   C |    60 | 17.0 |        
   22837 | 2020-12-31 20:59:38 |          MASTER-IAC | (22h 47m 38.89s , -16d 09m 29.4s) |   C |    60 | 17.5 |        
   22837 | 2020-12-31 20:59:38 |          MASTER-IAC | (22h 39m 12.42s , -16d 04m 31.2s) |   C |    60 | 16.9 |        
   22917 | 2020-12-31 21:00:58 |          MASTER-IAC | (22h 34m 55.44s , -14d 08m 13.3s) |   C |    60 | 17.6 |        
   22917 | 2020-12-31 21:00:58 |          MASTER-IAC | (22h 26m 33.72s , -14d 03m 14.7s) |   C |    60 | 17.1 |        
   22998 | 2020-12-31 21:02:19 |          MASTER-IAC | (22h 49m 02.89s , -24d 08m 45.8s) |   C |    60 | 17.4 |        
   22998 | 2020-12-31 21:02:19 |          MASTER-IAC | (22h 40m 09.52s , -24d 03m 55.3s) |   C |    60 | 16.4 |        
   23078 | 2020-12-31 21:03:39 |          MASTER-IAC | (22h 46m 08.56s , -22d 07m 45.8s) |   C |    60 | 17.4 |        
   23078 | 2020-12-31 21:03:39 |          MASTER-IAC | (22h 37m 23.22s , -22d 02m 53.5s) |   C |    60 | 16.3 |        
   23158 | 2020-12-31 21:04:59 |          MASTER-IAC | (22h 43m 03.97s , -14d 03m 50.1s) |   C |    60 | 17.0 |        
   23238 | 2020-12-31 21:06:20 |          MASTER-IAC | (23h 02m 16.97s , -18d 09m 48.2s) |   C |    60 | 17.7 |        
   23238 | 2020-12-31 21:06:20 |          MASTER-IAC | (22h 53m 45.06s , -18d 04m 52.5s) |   C |    60 | 16.9 |        
   23318 | 2020-12-31 21:07:40 |          MASTER-IAC | (22h 55m 54.59s , -16d 04m 40.0s) |   C |    60 | 16.6 |        
   23398 | 2020-12-31 21:08:59 |          MASTER-IAC | (23h 15m 16.56s , -24d 03m 12.1s) |   C |    60 | 17.2 |        
   23478 | 2020-12-31 21:10:19 |          MASTER-IAC | (22h 28m 40.61s , -18d 09m 20.7s) |   C |    60 | 17.2 |        
   23558 | 2020-12-31 21:11:39 |          MASTER-IAC | (22h 45m 03.81s , -20d 07m 52.6s) |   C |    60 | 17.1 |        
   23558 | 2020-12-31 21:11:39 |          MASTER-IAC | (22h 36m 25.27s , -20d 03m 01.5s) |   C |    60 | 15.4 |        
   23638 | 2020-12-31 21:12:59 |          MASTER-IAC | (22h 30m 56.98s , -16d 08m 48.6s) |   C |    60 | 17.5 |        
   23638 | 2020-12-31 21:12:59 |          MASTER-IAC | (22h 22m 29.69s , -16d 03m 57.6s) |   C |    60 | 14.3 |        
   23717 | 2020-12-31 21:14:19 |          MASTER-IAC | (22h 45m 28.47s , -18d 07m 51.0s) |   C |    60 | 17.3 |        
   23717 | 2020-12-31 21:14:19 |          MASTER-IAC | (22h 36m 56.25s , -18d 02m 58.5s) |   C |    60 | 16.2 |        
   23797 | 2020-12-31 21:15:38 |          MASTER-IAC | (23h 03m 30.86s , -22d 08m 51.6s) |   C |    60 | 17.6 |        
   23797 | 2020-12-31 21:15:38 |          MASTER-IAC | (22h 54m 45.54s , -22d 04m 00.7s) |   C |    60 | 16.6 |        
   23879 | 2020-12-31 21:17:00 |          MASTER-IAC | (23h 06m 35.04s , -24d 09m 52.5s) |   C |    60 | 17.4 |        
   23879 | 2020-12-31 21:17:00 |          MASTER-IAC | (22h 57m 41.72s , -24d 05m 03.1s) |   C |    60 | 16.6 |        
   23959 | 2020-12-31 21:18:20 |          MASTER-IAC | (23h 02m 06.99s , -20d 09m 41.9s) |   C |    60 | 17.5 |        
   23959 | 2020-12-31 21:18:20 |          MASTER-IAC | (22h 53m 28.70s , -20d 04m 50.4s) |   C |    60 | 16.4 |        
   24039 | 2020-12-31 21:19:40 |          MASTER-IAC | (22h 47m 38.65s , -16d 08m 01.4s) |   C |    60 | 17.2 |        
   24039 | 2020-12-31 21:19:40 |          MASTER-IAC | (22h 39m 11.99s , -16d 03m 08.9s) |   C |    60 | 15.9 |        
   24119 | 2020-12-31 21:21:00 |          MASTER-IAC | (22h 34m 53.45s , -14d 09m 49.4s) |   C |    60 | 17.3 |        
   24119 | 2020-12-31 21:21:00 |          MASTER-IAC | (22h 26m 30.98s , -14d 04m 59.9s) |   C |    60 | 14.4 |        
   24199 | 2020-12-31 21:22:20 |          MASTER-IAC | (22h 43m 05.07s , -14d 03m 18.1s) |   C |    60 | 16.4 |        
   24278 | 2020-12-31 21:23:40 |          MASTER-IAC | (23h 02m 18.17s , -18d 08m 55.1s) |   C |    60 | 17.4 |        
   24278 | 2020-12-31 21:23:40 |          MASTER-IAC | (22h 53m 46.13s , -18d 04m 04.2s) |   C |    60 | 16.4 |        
   24358 | 2020-12-31 21:24:59 |          MASTER-IAC | (22h 55m 47.84s , -16d 03m 03.6s) |   C |    60 | 16.2 |        
   24438 | 2020-12-31 21:26:19 |          MASTER-IAC | (23h 15m 20.18s , -24d 04m 06.5s) |   C |    60 | 16.7 |        
   25245 | 2020-12-31 21:39:46 |          MASTER-IAC | (23h 02m 22.85s , -18d 09m 38.9s) |   C |    60 | 17.3 |        
   25245 | 2020-12-31 21:39:46 |          MASTER-IAC | (22h 53m 49.71s , -18d 04m 53.8s) |   C |    60 | 14.5 |        
   25325 | 2020-12-31 21:41:06 |          MASTER-IAC | (22h 55m 50.60s , -16d 03m 31.8s) |   C |    60 | 15.3 |        
   25407 | 2020-12-31 21:42:28 |          MASTER-IAC | (23h 15m 15.34s , -24d 05m 06.3s) |   C |    60 | 15.8 |        
Filter C is a clear (unfiltred) band. 


The observation and reduction will continue. 
The message may be cited.



#######################################################################################
#######################################################################################

  ID = 3588
TYPE = 35
DAYS = 0


MASTER-IAC robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Spain (IAC Teide Observatory) started inspect of the FERMI GRB201231.61 (trigger No 631118376,22h 13m 52.80s , -26d 13m 48.0s, R=12.51) errorbox  17135 sec after notice time and 17162 sec after trigger time at 2020-12-31 19:25:34 UT, with upper limit up to  18.8 mag. Observations started at twilight.  The observations began at zenith distance = 66 deg. The sun  altitude  is -14.6 deg. 

The galactic latitude b = -56 deg., longitude l = 26 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1516263

We obtain a following upper limits.  

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________

   17193 | 2020-12-31 19:25:34 |          MASTER-IAC | (22h 14m 06.85s , -24d 08m 08.5s) |   C |    60 | 18.0 |        
   17193 | 2020-12-31 19:25:34 |          MASTER-IAC | (22h 05m 13.30s , -24d 03m 09.9s) |   C |    60 | 17.8 |        
   17273 | 2020-12-31 19:26:54 |          MASTER-IAC | (22h 11m 40.95s , -22d 07m 08.3s) |   C |    60 | 18.3 |        
   17273 | 2020-12-31 19:26:54 |          MASTER-IAC | (22h 02m 55.34s , -22d 02m 09.3s) |   C |    60 | 17.8 |        
   17353 | 2020-12-31 19:28:14 |          MASTER-IAC | (22h 05m 58.56s , -28d 08m 38.1s) |   C |    60 | 18.2 |        
   17353 | 2020-12-31 19:28:14 |          MASTER-IAC | (21h 56m 46.61s , -28d 03m 43.8s) |   C |    60 | 17.8 |        
   17433 | 2020-12-31 19:29:34 |          MASTER-IAC | (22h 00m 24.73s , -26d 07m 04.0s) |   C |    60 | 18.2 |        
   17433 | 2020-12-31 19:29:34 |          MASTER-IAC | (21h 51m 22.63s , -26d 02m 08.6s) |   C |    60 | 18.0 |        
   17513 | 2020-12-31 19:30:54 |          MASTER-IAC | (22h 31m 31.97s , -24d 07m 55.7s) |   C |    60 | 18.7 |        
   17513 | 2020-12-31 19:30:54 |          MASTER-IAC | (22h 22m 38.57s , -24d 02m 59.6s) |   C |    60 | 18.4 |        
   17593 | 2020-12-31 19:32:14 |          MASTER-IAC | (22h 35m 57.50s , -26d 06m 57.1s) |   C |    60 | 18.8 |        
   17593 | 2020-12-31 19:32:14 |          MASTER-IAC | (22h 26m 55.39s , -26d 02m 03.2s) |   C |    60 | 18.3 |        
   17673 | 2020-12-31 19:33:34 |          MASTER-IAC | (22h 13m 29.11s , -30d 07m 53.5s) |   C |    60 | 18.7 |        
   17673 | 2020-12-31 19:33:34 |          MASTER-IAC | (22h 04m 06.40s , -30d 03m 02.8s) |   C |    60 | 17.8 |        
   17753 | 2020-12-31 19:34:54 |          MASTER-IAC | (22h 28m 53.14s , -22d 08m 59.7s) |   C |    60 | 18.4 |        
   17753 | 2020-12-31 19:34:54 |          MASTER-IAC | (22h 20m 07.48s , -22d 04m 04.0s) |   C |    60 | 18.1 |        
   17833 | 2020-12-31 19:36:14 |          MASTER-IAC | (22h 31m 58.26s , -30d 08m 30.9s) |   C |    60 | 18.5 |        
   17833 | 2020-12-31 19:36:14 |          MASTER-IAC | (22h 22m 35.49s , -30d 03m 40.3s) |   C |    60 | 18.4 |        
   17913 | 2020-12-31 19:37:34 |          MASTER-IAC | (21h 56m 31.98s , -24d 06m 55.8s) |   C |    60 | 18.4 |        
   17913 | 2020-12-31 19:37:34 |          MASTER-IAC | (21h 47m 38.52s , -24d 02m 02.9s) |   C |    60 | 17.9 |        
   17993 | 2020-12-31 19:38:54 |          MASTER-IAC | (22h 42m 15.36s , -28d 09m 00.8s) |   C |    60 | 18.7 |        
   17993 | 2020-12-31 19:38:54 |          MASTER-IAC | (22h 33m 03.33s , -28d 04m 09.7s) |   C |    60 | 18.4 |        
   18073 | 2020-12-31 19:40:14 |          MASTER-IAC | (22h 11m 00.99s , -20d 07m 11.7s) |   C |    60 | 18.5 |        
   18073 | 2020-12-31 19:40:14 |          MASTER-IAC | (22h 02m 22.28s , -20d 02m 17.0s) |   C |    60 | 18.0 |        
   18152 | 2020-12-31 19:41:33 |          MASTER-IAC | (22h 27m 57.06s , -20d 08m 04.3s) |   C |    60 | 18.5 |        
   18152 | 2020-12-31 19:41:33 |          MASTER-IAC | (22h 19m 18.31s , -20d 03m 08.8s) |   C |    60 | 18.1 |        
   18232 | 2020-12-31 19:42:53 |          MASTER-IAC | (22h 14m 00.61s , -24d 07m 00.8s) |   C |    60 | 18.2 |        
   18232 | 2020-12-31 19:42:53 |          MASTER-IAC | (22h 05m 07.04s , -24d 02m 08.2s) |   C |    60 | 17.9 |        
   18312 | 2020-12-31 19:44:13 |          MASTER-IAC | (22h 11m 42.81s , -22d 08m 01.3s) |   C |    60 | 18.3 |        
   18312 | 2020-12-31 19:44:13 |          MASTER-IAC | (22h 02m 57.02s , -22d 03m 06.9s) |   C |    60 | 17.9 |        
   18392 | 2020-12-31 19:45:33 |          MASTER-IAC | (22h 05m 54.28s , -28d 08m 59.8s) |   C |    60 | 18.1 |        
   18392 | 2020-12-31 19:45:33 |          MASTER-IAC | (21h 56m 42.01s , -28d 04m 10.0s) |   C |    60 | 17.5 |        
   18472 | 2020-12-31 19:46:53 |          MASTER-IAC | (22h 00m 24.14s , -26d 08m 53.4s) |   C |    60 | 18.1 |        
   18472 | 2020-12-31 19:46:53 |          MASTER-IAC | (21h 51m 21.64s , -26d 04m 02.5s) |   C |    60 | 17.5 |        
   18553 | 2020-12-31 19:48:14 |          MASTER-IAC | (22h 31m 35.67s , -24d 07m 08.9s) |   C |    60 | 18.5 |        
   18553 | 2020-12-31 19:48:14 |          MASTER-IAC | (22h 22m 42.14s , -24d 02m 15.7s) |   C |    60 | 18.1 |        
   18633 | 2020-12-31 19:49:34 |          MASTER-IAC | (22h 36m 00.24s , -26d 09m 03.1s) |   C |    60 | 18.5 |        
   18633 | 2020-12-31 19:49:34 |          MASTER-IAC | (22h 26m 57.75s , -26d 04m 11.6s) |   C |    60 | 18.0 |        
   18713 | 2020-12-31 19:50:54 |          MASTER-IAC | (22h 13m 28.90s , -30d 07m 16.1s) |   C |    60 | 18.3 |        
   18713 | 2020-12-31 19:50:54 |          MASTER-IAC | (22h 04m 05.81s , -30d 02m 28.9s) |   C |    60 | 17.3 |        
   18794 | 2020-12-31 19:52:15 |          MASTER-IAC | (22h 28m 54.39s , -22d 08m 09.8s) |   C |    60 | 18.3 |        
   18794 | 2020-12-31 19:52:15 |          MASTER-IAC | (22h 20m 08.54s , -22d 03m 16.6s) |   C |    60 | 17.9 |        
   18874 | 2020-12-31 19:53:35 |          MASTER-IAC | (22h 31m 52.58s , -30d 07m 09.6s) |   C |    60 | 18.2 |        
   18874 | 2020-12-31 19:53:35 |          MASTER-IAC | (22h 22m 29.66s , -30d 02m 21.7s) |   C |    60 | 18.1 |        
   18953 | 2020-12-31 19:54:55 |          MASTER-IAC | (21h 56m 35.51s , -24d 08m 00.4s) |   C |    60 | 17.8 |        
   18953 | 2020-12-31 19:54:55 |          MASTER-IAC | (21h 47m 41.66s , -24d 03m 10.1s) |   C |    60 | 17.4 |        
   19033 | 2020-12-31 19:56:14 |          MASTER-IAC | (22h 42m 12.34s , -28d 09m 12.7s) |   C |    60 | 18.3 |        
   19033 | 2020-12-31 19:56:14 |          MASTER-IAC | (22h 32m 59.99s , -28d 04m 23.2s) |   C |    60 | 18.0 |        
   19113 | 2020-12-31 19:57:34 |          MASTER-IAC | (22h 11m 00.89s , -20d 08m 42.0s) |   C |    60 | 18.1 |        
   19113 | 2020-12-31 19:57:34 |          MASTER-IAC | (22h 02m 21.80s , -20d 03m 49.0s) |   C |    60 | 17.6 |        
   19193 | 2020-12-31 19:58:54 |          MASTER-IAC | (22h 28m 00.19s , -20d 07m 28.2s) |   C |    60 | 18.1 |        
   19193 | 2020-12-31 19:58:54 |          MASTER-IAC | (22h 19m 21.16s , -20d 02m 35.2s) |   C |    60 | 17.8 |        
   19273 | 2020-12-31 20:00:14 |          MASTER-IAC | (22h 14m 03.76s , -24d 08m 52.5s) |   C |    60 | 17.8 |        
   19273 | 2020-12-31 20:00:14 |          MASTER-IAC | (22h 05m 09.70s , -24d 04m 02.2s) |   C |    60 | 17.3 |        
   19353 | 2020-12-31 20:01:34 |          MASTER-IAC | (22h 11m 42.66s , -22d 07m 21.8s) |   C |    60 | 18.0 |        
   19353 | 2020-12-31 20:01:34 |          MASTER-IAC | (22h 02m 56.57s , -22d 02m 30.1s) |   C |    60 | 17.5 |        
   19433 | 2020-12-31 20:02:54 |          MASTER-IAC | (22h 05m 55.28s , -28d 08m 06.4s) |   C |    60 | 17.7 |        
   19433 | 2020-12-31 20:02:54 |          MASTER-IAC | (21h 56m 42.46s , -28d 03m 21.0s) |   C |    60 | 16.9 |        
   19713 | 2020-12-31 20:07:34 |          MASTER-IAC | (22h 00m 24.65s , -26d 08m 11.4s) |   C |    60 | 17.5 |        
   19713 | 2020-12-31 20:07:34 |          MASTER-IAC | (21h 51m 22.18s , -26d 03m 17.1s) |   C |    60 | 16.6 |        
   19792 | 2020-12-31 20:08:53 |          MASTER-IAC | (22h 31m 31.80s , -24d 09m 22.1s) |   C |    60 | 18.1 |        
   19792 | 2020-12-31 20:08:54 |          MASTER-IAC | (22h 22m 38.42s , -24d 04m 22.8s) |   C |    60 | 17.6 |        
   19874 | 2020-12-31 20:10:15 |          MASTER-IAC | (22h 36m 03.14s , -26d 08m 56.1s) |   C |    60 | 18.0 |        
   19874 | 2020-12-31 20:10:15 |          MASTER-IAC | (22h 27m 01.00s , -26d 03m 58.7s) |   C |    60 | 17.6 |        
   19954 | 2020-12-31 20:11:35 |          MASTER-IAC | (22h 13m 25.76s , -30d 07m 35.7s) |   C |    60 | 17.9 |        
   19954 | 2020-12-31 20:11:35 |          MASTER-IAC | (22h 04m 02.66s , -30d 02m 46.2s) |   C |    60 | 16.6 |        
Filter C is a clear (unfiltred) band. 


The observation and reduction will continue. 
The message may be cited.



#######################################################################################
#######################################################################################

  ID = 3587
TYPE = 35
DAYS = 0


MASTER-IAC robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Spain (IAC Teide Observatory) started inspect of the FERMI GRB201231.61 (trigger No 631118376,22h 13m 52.80s , -26d 13m 48.0s, R=12.51) errorbox  17135 sec after notice time and 17162 sec after trigger time at 2020-12-31 19:25:34 UT, with upper limit up to  18.8 mag. Observations started at twilight.  The observations began at zenith distance = 66 deg. The sun  altitude  is -14.6 deg. 

The galactic latitude b = -56 deg., longitude l = 26 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1516263

We obtain a following upper limits.  

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________

   17193 | 2020-12-31 19:25:34 |          MASTER-IAC | (22h 14m 06.85s , -24d 08m 08.5s) |   C |    60 | 18.0 |        
   17193 | 2020-12-31 19:25:34 |          MASTER-IAC | (22h 05m 13.30s , -24d 03m 09.9s) |   C |    60 | 17.8 |        
   17273 | 2020-12-31 19:26:54 |          MASTER-IAC | (22h 11m 40.95s , -22d 07m 08.3s) |   C |    60 | 18.3 |        
   17273 | 2020-12-31 19:26:54 |          MASTER-IAC | (22h 02m 55.34s , -22d 02m 09.3s) |   C |    60 | 17.8 |        
   17353 | 2020-12-31 19:28:14 |          MASTER-IAC | (22h 05m 58.56s , -28d 08m 38.1s) |   C |    60 | 18.2 |        
   17353 | 2020-12-31 19:28:14 |          MASTER-IAC | (21h 56m 46.61s , -28d 03m 43.8s) |   C |    60 | 17.8 |        
   17433 | 2020-12-31 19:29:34 |          MASTER-IAC | (22h 00m 24.73s , -26d 07m 04.0s) |   C |    60 | 18.2 |        
   17433 | 2020-12-31 19:29:34 |          MASTER-IAC | (21h 51m 22.63s , -26d 02m 08.6s) |   C |    60 | 18.0 |        
   17513 | 2020-12-31 19:30:54 |          MASTER-IAC | (22h 31m 31.97s , -24d 07m 55.7s) |   C |    60 | 18.7 |        
   17513 | 2020-12-31 19:30:54 |          MASTER-IAC | (22h 22m 38.57s , -24d 02m 59.6s) |   C |    60 | 18.4 |        
   17593 | 2020-12-31 19:32:14 |          MASTER-IAC | (22h 35m 57.50s , -26d 06m 57.1s) |   C |    60 | 18.8 |        
   17593 | 2020-12-31 19:32:14 |          MASTER-IAC | (22h 26m 55.39s , -26d 02m 03.2s) |   C |    60 | 18.3 |        
   17673 | 2020-12-31 19:33:34 |          MASTER-IAC | (22h 13m 29.11s , -30d 07m 53.5s) |   C |    60 | 18.7 |        
   17673 | 2020-12-31 19:33:34 |          MASTER-IAC | (22h 04m 06.40s , -30d 03m 02.8s) |   C |    60 | 17.8 |        
   17753 | 2020-12-31 19:34:54 |          MASTER-IAC | (22h 28m 53.14s , -22d 08m 59.7s) |   C |    60 | 18.4 |        
   17753 | 2020-12-31 19:34:54 |          MASTER-IAC | (22h 20m 07.48s , -22d 04m 04.0s) |   C |    60 | 18.1 |        
   17833 | 2020-12-31 19:36:14 |          MASTER-IAC | (22h 31m 58.26s , -30d 08m 30.9s) |   C |    60 | 18.5 |        
   17833 | 2020-12-31 19:36:14 |          MASTER-IAC | (22h 22m 35.49s , -30d 03m 40.3s) |   C |    60 | 18.4 |        
   17913 | 2020-12-31 19:37:34 |          MASTER-IAC | (21h 56m 31.98s , -24d 06m 55.8s) |   C |    60 | 18.4 |        
   17913 | 2020-12-31 19:37:34 |          MASTER-IAC | (21h 47m 38.52s , -24d 02m 02.9s) |   C |    60 | 17.9 |        
   17993 | 2020-12-31 19:38:54 |          MASTER-IAC | (22h 42m 15.36s , -28d 09m 00.8s) |   C |    60 | 18.7 |        
   17993 | 2020-12-31 19:38:54 |          MASTER-IAC | (22h 33m 03.33s , -28d 04m 09.7s) |   C |    60 | 18.4 |        
   18073 | 2020-12-31 19:40:14 |          MASTER-IAC | (22h 11m 00.99s , -20d 07m 11.7s) |   C |    60 | 18.5 |        
   18073 | 2020-12-31 19:40:14 |          MASTER-IAC | (22h 02m 22.28s , -20d 02m 17.0s) |   C |    60 | 18.0 |        
   18152 | 2020-12-31 19:41:33 |          MASTER-IAC | (22h 27m 57.06s , -20d 08m 04.3s) |   C |    60 | 18.5 |        
   18152 | 2020-12-31 19:41:33 |          MASTER-IAC | (22h 19m 18.31s , -20d 03m 08.8s) |   C |    60 | 18.1 |        
   18232 | 2020-12-31 19:42:53 |          MASTER-IAC | (22h 14m 00.61s , -24d 07m 00.8s) |   C |    60 | 18.2 |        
   18232 | 2020-12-31 19:42:53 |          MASTER-IAC | (22h 05m 07.04s , -24d 02m 08.2s) |   C |    60 | 17.9 |        
   18312 | 2020-12-31 19:44:13 |          MASTER-IAC | (22h 11m 42.81s , -22d 08m 01.3s) |   C |    60 | 18.3 |        
   18312 | 2020-12-31 19:44:13 |          MASTER-IAC | (22h 02m 57.02s , -22d 03m 06.9s) |   C |    60 | 17.9 |        
   18392 | 2020-12-31 19:45:33 |          MASTER-IAC | (22h 05m 54.28s , -28d 08m 59.8s) |   C |    60 | 18.1 |        
   18392 | 2020-12-31 19:45:33 |          MASTER-IAC | (21h 56m 42.01s , -28d 04m 10.0s) |   C |    60 | 17.5 |        
   18472 | 2020-12-31 19:46:53 |          MASTER-IAC | (22h 00m 24.14s , -26d 08m 53.4s) |   C |    60 | 18.1 |        
   18472 | 2020-12-31 19:46:53 |          MASTER-IAC | (21h 51m 21.64s , -26d 04m 02.5s) |   C |    60 | 17.5 |        
   18553 | 2020-12-31 19:48:14 |          MASTER-IAC | (22h 31m 35.67s , -24d 07m 08.9s) |   C |    60 | 18.5 |        
   18553 | 2020-12-31 19:48:14 |          MASTER-IAC | (22h 22m 42.14s , -24d 02m 15.7s) |   C |    60 | 18.1 |        
   18633 | 2020-12-31 19:49:34 |          MASTER-IAC | (22h 36m 00.24s , -26d 09m 03.1s) |   C |    60 | 18.5 |        
   18633 | 2020-12-31 19:49:34 |          MASTER-IAC | (22h 26m 57.75s , -26d 04m 11.6s) |   C |    60 | 18.0 |        
   18713 | 2020-12-31 19:50:54 |          MASTER-IAC | (22h 13m 28.90s , -30d 07m 16.1s) |   C |    60 | 18.3 |        
   18713 | 2020-12-31 19:50:54 |          MASTER-IAC | (22h 04m 05.81s , -30d 02m 28.9s) |   C |    60 | 17.3 |        
   18794 | 2020-12-31 19:52:15 |          MASTER-IAC | (22h 28m 54.39s , -22d 08m 09.8s) |   C |    60 | 18.3 |        
   18794 | 2020-12-31 19:52:15 |          MASTER-IAC | (22h 20m 08.54s , -22d 03m 16.6s) |   C |    60 | 17.9 |        
   18874 | 2020-12-31 19:53:35 |          MASTER-IAC | (22h 31m 52.58s , -30d 07m 09.6s) |   C |    60 | 18.2 |        
   18874 | 2020-12-31 19:53:35 |          MASTER-IAC | (22h 22m 29.66s , -30d 02m 21.7s) |   C |    60 | 18.1 |        
   18953 | 2020-12-31 19:54:55 |          MASTER-IAC | (21h 56m 35.51s , -24d 08m 00.4s) |   C |    60 | 17.8 |        
   18953 | 2020-12-31 19:54:55 |          MASTER-IAC | (21h 47m 41.66s , -24d 03m 10.1s) |   C |    60 | 17.4 |        
   19033 | 2020-12-31 19:56:14 |          MASTER-IAC | (22h 42m 12.34s , -28d 09m 12.7s) |   C |    60 | 18.3 |        
   19033 | 2020-12-31 19:56:14 |          MASTER-IAC | (22h 32m 59.99s , -28d 04m 23.2s) |   C |    60 | 18.0 |        
   19113 | 2020-12-31 19:57:34 |          MASTER-IAC | (22h 11m 00.89s , -20d 08m 42.0s) |   C |    60 | 18.1 |        
   19113 | 2020-12-31 19:57:34 |          MASTER-IAC | (22h 02m 21.80s , -20d 03m 49.0s) |   C |    60 | 17.6 |        
   19193 | 2020-12-31 19:58:54 |          MASTER-IAC | (22h 28m 00.19s , -20d 07m 28.2s) |   C |    60 | 18.1 |        
   19193 | 2020-12-31 19:58:54 |          MASTER-IAC | (22h 19m 21.16s , -20d 02m 35.2s) |   C |    60 | 17.8 |        
   19273 | 2020-12-31 20:00:14 |          MASTER-IAC | (22h 14m 03.76s , -24d 08m 52.5s) |   C |    60 | 17.8 |        
   19273 | 2020-12-31 20:00:14 |          MASTER-IAC | (22h 05m 09.70s , -24d 04m 02.2s) |   C |    60 | 17.3 |        
   19353 | 2020-12-31 20:01:34 |          MASTER-IAC | (22h 11m 42.66s , -22d 07m 21.8s) |   C |    60 | 18.0 |        
   19353 | 2020-12-31 20:01:34 |          MASTER-IAC | (22h 02m 56.57s , -22d 02m 30.1s) |   C |    60 | 17.5 |        
   19433 | 2020-12-31 20:02:54 |          MASTER-IAC | (22h 05m 55.28s , -28d 08m 06.4s) |   C |    60 | 17.7 |        
   19433 | 2020-12-31 20:02:54 |          MASTER-IAC | (21h 56m 42.46s , -28d 03m 21.0s) |   C |    60 | 16.9 |        
   19713 | 2020-12-31 20:07:34 |          MASTER-IAC | (22h 00m 24.65s , -26d 08m 11.4s) |   C |    60 | 17.5 |        
   19713 | 2020-12-31 20:07:34 |          MASTER-IAC | (21h 51m 22.18s , -26d 03m 17.1s) |   C |    60 | 16.6 |        
   19792 | 2020-12-31 20:08:53 |          MASTER-IAC | (22h 31m 31.80s , -24d 09m 22.1s) |   C |    60 | 18.1 |        
   19792 | 2020-12-31 20:08:54 |          MASTER-IAC | (22h 22m 38.42s , -24d 04m 22.8s) |   C |    60 | 17.6 |        
   19874 | 2020-12-31 20:10:15 |          MASTER-IAC | (22h 36m 03.14s , -26d 08m 56.1s) |   C |    60 | 18.0 |        
   19874 | 2020-12-31 20:10:15 |          MASTER-IAC | (22h 27m 01.00s , -26d 03m 58.7s) |   C |    60 | 17.6 |        
   19954 | 2020-12-31 20:11:35 |          MASTER-IAC | (22h 13m 25.76s , -30d 07m 35.7s) |   C |    60 | 17.9 |        
   19954 | 2020-12-31 20:11:35 |          MASTER-IAC | (22h 04m 02.66s , -30d 02m 46.2s) |   C |    60 | 16.6 |        
Filter C is a clear (unfiltred) band. 


The observation and reduction will continue. 
The message may be cited.



#######################################################################################
#######################################################################################

  ID = 3586
TYPE = 34
DAYS = 0


MASTER-IAC robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Spain (IAC Teide Observatory) started inspect of the FERMI GRB201231.61 (trigger No 631118376,22h 13m 52.80s , -26d 13m 48.0s, R=12.51) errorbox  17135 sec after notice time and 17162 sec after trigger time at 2020-12-31 19:25:34 UT, with upper limit up to  18.8 mag. Observations started at twilight.  The observations began at zenith distance = 66 deg. The sun  altitude  is -14.6 deg. 

The galactic latitude b = -56 deg., longitude l = 26 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1516263

We obtain a following upper limits.  

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________

   17193 | 2020-12-31 19:25:34 |          MASTER-IAC | (22h 14m 06.85s , -24d 08m 08.5s) |   C |    60 | 18.0 |        
   17193 | 2020-12-31 19:25:34 |          MASTER-IAC | (22h 05m 13.30s , -24d 03m 09.9s) |   C |    60 | 17.8 |        
   17273 | 2020-12-31 19:26:54 |          MASTER-IAC | (22h 11m 40.95s , -22d 07m 08.3s) |   C |    60 | 18.3 |        
   17273 | 2020-12-31 19:26:54 |          MASTER-IAC | (22h 02m 55.34s , -22d 02m 09.3s) |   C |    60 | 17.8 |        
   17353 | 2020-12-31 19:28:14 |          MASTER-IAC | (22h 05m 58.56s , -28d 08m 38.1s) |   C |    60 | 18.2 |        
   17353 | 2020-12-31 19:28:14 |          MASTER-IAC | (21h 56m 46.61s , -28d 03m 43.8s) |   C |    60 | 17.8 |        
   17433 | 2020-12-31 19:29:34 |          MASTER-IAC | (22h 00m 24.73s , -26d 07m 04.0s) |   C |    60 | 18.2 |        
   17433 | 2020-12-31 19:29:34 |          MASTER-IAC | (21h 51m 22.63s , -26d 02m 08.6s) |   C |    60 | 18.0 |        
   17513 | 2020-12-31 19:30:54 |          MASTER-IAC | (22h 31m 31.97s , -24d 07m 55.7s) |   C |    60 | 18.7 |        
   17513 | 2020-12-31 19:30:54 |          MASTER-IAC | (22h 22m 38.57s , -24d 02m 59.6s) |   C |    60 | 18.4 |        
   17593 | 2020-12-31 19:32:14 |          MASTER-IAC | (22h 35m 57.50s , -26d 06m 57.1s) |   C |    60 | 18.8 |        
   17593 | 2020-12-31 19:32:14 |          MASTER-IAC | (22h 26m 55.39s , -26d 02m 03.2s) |   C |    60 | 18.3 |        
   17673 | 2020-12-31 19:33:34 |          MASTER-IAC | (22h 13m 29.11s , -30d 07m 53.5s) |   C |    60 | 18.7 |        
   17673 | 2020-12-31 19:33:34 |          MASTER-IAC | (22h 04m 06.40s , -30d 03m 02.8s) |   C |    60 | 17.8 |        
   17753 | 2020-12-31 19:34:54 |          MASTER-IAC | (22h 28m 53.14s , -22d 08m 59.7s) |   C |    60 | 18.4 |        
   17753 | 2020-12-31 19:34:54 |          MASTER-IAC | (22h 20m 07.48s , -22d 04m 04.0s) |   C |    60 | 18.1 |        
   17833 | 2020-12-31 19:36:14 |          MASTER-IAC | (22h 31m 58.26s , -30d 08m 30.9s) |   C |    60 | 18.5 |        
   17833 | 2020-12-31 19:36:14 |          MASTER-IAC | (22h 22m 35.49s , -30d 03m 40.3s) |   C |    60 | 18.4 |        
   17913 | 2020-12-31 19:37:34 |          MASTER-IAC | (21h 56m 31.98s , -24d 06m 55.8s) |   C |    60 | 18.4 |        
   17913 | 2020-12-31 19:37:34 |          MASTER-IAC | (21h 47m 38.52s , -24d 02m 02.9s) |   C |    60 | 17.9 |        
   17993 | 2020-12-31 19:38:54 |          MASTER-IAC | (22h 42m 15.36s , -28d 09m 00.8s) |   C |    60 | 18.7 |        
   17993 | 2020-12-31 19:38:54 |          MASTER-IAC | (22h 33m 03.33s , -28d 04m 09.7s) |   C |    60 | 18.4 |        
   18073 | 2020-12-31 19:40:14 |          MASTER-IAC | (22h 11m 00.99s , -20d 07m 11.7s) |   C |    60 | 18.5 |        
   18073 | 2020-12-31 19:40:14 |          MASTER-IAC | (22h 02m 22.28s , -20d 02m 17.0s) |   C |    60 | 18.0 |        
   18152 | 2020-12-31 19:41:33 |          MASTER-IAC | (22h 27m 57.06s , -20d 08m 04.3s) |   C |    60 | 18.5 |        
   18152 | 2020-12-31 19:41:33 |          MASTER-IAC | (22h 19m 18.31s , -20d 03m 08.8s) |   C |    60 | 18.1 |        
   18232 | 2020-12-31 19:42:53 |          MASTER-IAC | (22h 14m 00.61s , -24d 07m 00.8s) |   C |    60 | 18.2 |        
   18232 | 2020-12-31 19:42:53 |          MASTER-IAC | (22h 05m 07.04s , -24d 02m 08.2s) |   C |    60 | 17.9 |        
   18312 | 2020-12-31 19:44:13 |          MASTER-IAC | (22h 11m 42.81s , -22d 08m 01.3s) |   C |    60 | 18.3 |        
   18312 | 2020-12-31 19:44:13 |          MASTER-IAC | (22h 02m 57.02s , -22d 03m 06.9s) |   C |    60 | 17.9 |        
   18392 | 2020-12-31 19:45:33 |          MASTER-IAC | (22h 05m 54.28s , -28d 08m 59.8s) |   C |    60 | 18.1 |        
   18392 | 2020-12-31 19:45:33 |          MASTER-IAC | (21h 56m 42.01s , -28d 04m 10.0s) |   C |    60 | 17.5 |        
   18472 | 2020-12-31 19:46:53 |          MASTER-IAC | (22h 00m 24.14s , -26d 08m 53.4s) |   C |    60 | 18.1 |        
   18472 | 2020-12-31 19:46:53 |          MASTER-IAC | (21h 51m 21.64s , -26d 04m 02.5s) |   C |    60 | 17.5 |        
   18553 | 2020-12-31 19:48:14 |          MASTER-IAC | (22h 31m 35.67s , -24d 07m 08.9s) |   C |    60 | 18.5 |        
   18553 | 2020-12-31 19:48:14 |          MASTER-IAC | (22h 22m 42.14s , -24d 02m 15.7s) |   C |    60 | 18.1 |        
   18633 | 2020-12-31 19:49:34 |          MASTER-IAC | (22h 36m 00.24s , -26d 09m 03.1s) |   C |    60 | 18.5 |        
   18633 | 2020-12-31 19:49:34 |          MASTER-IAC | (22h 26m 57.75s , -26d 04m 11.6s) |   C |    60 | 18.0 |        
   18713 | 2020-12-31 19:50:54 |          MASTER-IAC | (22h 13m 28.90s , -30d 07m 16.1s) |   C |    60 | 18.3 |        
   18713 | 2020-12-31 19:50:54 |          MASTER-IAC | (22h 04m 05.81s , -30d 02m 28.9s) |   C |    60 | 17.3 |        
   18794 | 2020-12-31 19:52:15 |          MASTER-IAC | (22h 28m 54.39s , -22d 08m 09.8s) |   C |    60 | 18.3 |        
   18794 | 2020-12-31 19:52:15 |          MASTER-IAC | (22h 20m 08.54s , -22d 03m 16.6s) |   C |    60 | 17.9 |        
   18874 | 2020-12-31 19:53:35 |          MASTER-IAC | (22h 31m 52.58s , -30d 07m 09.6s) |   C |    60 | 18.2 |        
   18874 | 2020-12-31 19:53:35 |          MASTER-IAC | (22h 22m 29.66s , -30d 02m 21.7s) |   C |    60 | 18.1 |        
   18953 | 2020-12-31 19:54:55 |          MASTER-IAC | (21h 56m 35.51s , -24d 08m 00.4s) |   C |    60 | 17.8 |        
   18953 | 2020-12-31 19:54:55 |          MASTER-IAC | (21h 47m 41.66s , -24d 03m 10.1s) |   C |    60 | 17.4 |        
   19033 | 2020-12-31 19:56:14 |          MASTER-IAC | (22h 42m 12.34s , -28d 09m 12.7s) |   C |    60 | 18.3 |        
   19033 | 2020-12-31 19:56:14 |          MASTER-IAC | (22h 32m 59.99s , -28d 04m 23.2s) |   C |    60 | 18.0 |        
   19113 | 2020-12-31 19:57:34 |          MASTER-IAC | (22h 11m 00.89s , -20d 08m 42.0s) |   C |    60 | 18.1 |        
   19113 | 2020-12-31 19:57:34 |          MASTER-IAC | (22h 02m 21.80s , -20d 03m 49.0s) |   C |    60 | 17.6 |        
   19193 | 2020-12-31 19:58:54 |          MASTER-IAC | (22h 28m 00.19s , -20d 07m 28.2s) |   C |    60 | 18.1 |        
   19193 | 2020-12-31 19:58:54 |          MASTER-IAC | (22h 19m 21.16s , -20d 02m 35.2s) |   C |    60 | 17.8 |        
   19273 | 2020-12-31 20:00:14 |          MASTER-IAC | (22h 14m 03.76s , -24d 08m 52.5s) |   C |    60 | 17.8 |        
   19273 | 2020-12-31 20:00:14 |          MASTER-IAC | (22h 05m 09.70s , -24d 04m 02.2s) |   C |    60 | 17.3 |        
   19353 | 2020-12-31 20:01:34 |          MASTER-IAC | (22h 11m 42.66s , -22d 07m 21.8s) |   C |    60 | 18.0 |        
   19353 | 2020-12-31 20:01:34 |          MASTER-IAC | (22h 02m 56.57s , -22d 02m 30.1s) |   C |    60 | 17.5 |        
   19433 | 2020-12-31 20:02:54 |          MASTER-IAC | (22h 05m 55.28s , -28d 08m 06.4s) |   C |    60 | 17.7 |        
   19433 | 2020-12-31 20:02:54 |          MASTER-IAC | (21h 56m 42.46s , -28d 03m 21.0s) |   C |    60 | 16.9 |        
   19713 | 2020-12-31 20:07:34 |          MASTER-IAC | (22h 00m 24.65s , -26d 08m 11.4s) |   C |    60 | 17.5 |        
   19713 | 2020-12-31 20:07:34 |          MASTER-IAC | (21h 51m 22.18s , -26d 03m 17.1s) |   C |    60 | 16.6 |        
   19792 | 2020-12-31 20:08:53 |          MASTER-IAC | (22h 31m 31.80s , -24d 09m 22.1s) |   C |    60 | 18.1 |        
   19792 | 2020-12-31 20:08:54 |          MASTER-IAC | (22h 22m 38.42s , -24d 04m 22.8s) |   C |    60 | 17.6 |        
   19874 | 2020-12-31 20:10:15 |          MASTER-IAC | (22h 36m 03.14s , -26d 08m 56.1s) |   C |    60 | 18.0 |        
   19874 | 2020-12-31 20:10:15 |          MASTER-IAC | (22h 27m 01.00s , -26d 03m 58.7s) |   C |    60 | 17.6 |        
   19954 | 2020-12-31 20:11:35 |          MASTER-IAC | (22h 13m 25.76s , -30d 07m 35.7s) |   C |    60 | 17.9 |        
   19954 | 2020-12-31 20:11:35 |          MASTER-IAC | (22h 04m 02.66s , -30d 02m 46.2s) |   C |    60 | 16.6 |        
Filter C is a clear (unfiltred) band. 


The observation and reduction will continue. 
The message may be cited.

MASTER, 2002-2024