MASTER Net MASTER Database: GRB201021.68 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 MAXI GRB201021.68
Trignum 143544224
Trigger time 2020-10-21 16:19:06
Notice time 2020-10-21 17:59:07.818302
Coord, eb (00h 14m 16.08s , -63d 29m 31.2s) , 1
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
1466520 2020-10-21 17:59:07.818302 00h 14m 16.08s -63d 29m 31.2s MAXI 1 alert 143544224 2 134 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

2020-10-21 16:19:06 (JD 2459144.179931)

Siderial time 20.864383 h

Ra 00:14:16.08 Dec -63:29:31.20
( 3.567000d, -63.492000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -27.91 Azimuth: 18.64

Sun: Altitude: -48.35 Azimuth: 204.67

Moon: Altitude: -42.09 Azimuth: 102.14

Tunka

Object: Altitude: -25.89 Azimuth: 7.30

Sun: Altitude: -48.60 Azimuth: 168.06

Moon: Altitude: -26.76 Azimuth: 83.52

Kislovodsk

Object: Altitude: -23.18 Azimuth: 339.67

Sun: Altitude: -22.98 Azimuth: 96.95

Moon: Altitude: 11.51 Azimuth: 38.48

Tavrida

Object: Altitude: -26.38 Azimuth: 336.17

Sun: Altitude: -16.83 Azimuth: 91.20

Moon: Altitude: 14.19 Azimuth: 31.27

SAAO

Object: Altitude: 38.61 Azimuth: 328.17

Sun: Altitude: 6.05 Azimuth: 80.88

Moon: Altitude: 70.50 Azimuth: 108.31

IAC

Object: Altitude: -31.61 Azimuth: 329.54

Sun: Altitude: 25.94 Azimuth: 59.91

Moon: Altitude: 34.65 Azimuth: 341.23

Argentina

Object: Altitude: 6.95 Azimuth: 350.11

Sun: Altitude: 69.12 Azimuth: 181.11

Moon: Altitude: 29.14 Azimuth: 282.41

Mexico

Object: Altitude: -55.48 Azimuth: 14.55

Sun: Altitude: 32.18 Azimuth: 309.81

Moon: Altitude: -29.42 Azimuth: 282.60

Ural

Object: Altitude: -32.53 Azimuth: 345.28

Sun: Altitude: -29.43 Azimuth: 118.03

Moon: Altitude: -5.47 Azimuth: 51.63

Vostryakovo

Object: Altitude: -35.09 Azimuth: 335.14

Sun: Altitude: -18.45 Azimuth: 97.57

Moon: Altitude: 3.89 Azimuth: 33.61

Gal. latitude: -53.468584 Gal. longitude: 309.499468

Dist. to Sun: 103.547646

Dist. to Moon: 67.171662

Moon coord.: (275.757335 d, -24.595992 d)

Sun coord.: (206.424790 d, -10.922991 d)

Lunar disk: 0.304272

Lunar phase: 113.045116

Lunar bright limb: 268.239459

No SN in this field

2020-10-21 17:59:07 (JD 2459144.249387)

Siderial time 22.535891 h

Ra 00:14:16.08 Dec -63:29:31.20
( 3.567000d, -63.492000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -34.42 Azimuth: 29.19

Sun: Altitude: -38.05 Azimuth: 235.56

Moon: Altitude: -55.99 Azimuth: 128.24

Tunka

Object: Altitude: -29.45 Azimuth: 19.20

Sun: Altitude: -46.87 Azimuth: 204.82

Moon: Altitude: -41.55 Azimuth: 103.05

Kislovodsk

Object: Altitude: -18.48 Azimuth: 350.46

Sun: Altitude: -40.20 Azimuth: 117.68

Moon: Altitude: -1.29 Azimuth: 56.25

Tavrida

Object: Altitude: -20.66 Azimuth: 346.57

Sun: Altitude: -34.23 Azimuth: 110.53

Moon: Altitude: 3.00 Azimuth: 50.24

SAAO

Object: Altitude: 49.28 Azimuth: 332.57

Sun: Altitude: -14.20 Azimuth: 66.89

Moon: Altitude: 50.49 Azimuth: 89.60

IAC

Object: Altitude: -20.71 Azimuth: 332.00

Sun: Altitude: 5.64 Azimuth: 74.34

Moon: Altitude: 36.62 Azimuth: 8.05

Argentina

Object: Altitude: 12.44 Azimuth: 340.30

Sun: Altitude: 59.17 Azimuth: 127.09

Moon: Altitude: 49.38 Azimuth: 271.75

Mexico

Object: Altitude: -57.30 Azimuth: 354.66

Sun: Altitude: 45.13 Azimuth: 336.78

Moon: Altitude: -9.86 Azimuth: 292.91

Ural

Object: Altitude: -30.56 Azimuth: 358.13

Sun: Altitude: -39.59 Azimuth: 145.32

Moon: Altitude: -16.91 Azimuth: 70.60

Vostryakovo

Object: Altitude: -30.48 Azimuth: 347.19

Sun: Altitude: -31.84 Azimuth: 120.41

Moon: Altitude: -5.51 Azimuth: 53.31

Gal. latitude: -53.468584 Gal. longitude: 309.499468

Dist. to Sun: 103.511909

Dist. to Moon: 66.672200

Moon coord.: (276.809290 d, -24.637167 d)

Sun coord.: (206.490544 d, -10.947595 d)

Lunar disk: 0.311415

Lunar phase: 112.158551

Lunar bright limb: 267.834008

No SN in this field

2020-10-21 18:59:07 (JD 2459144.291053)

Siderial time 23.538629 h

Ra 00:14:16.08 Dec -63:29:31.20
( 3.567000d, -63.492000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -39.51 Azimuth: 34.65

Sun: Altitude: -29.55 Azimuth: 250.07

Moon: Altitude: -61.99 Azimuth: 151.02

Tunka

Object: Altitude: -33.02 Azimuth: 25.84

Sun: Altitude: -41.62 Azimuth: 224.10

Moon: Altitude: -49.92 Azimuth: 117.55

Kislovodsk

Object: Altitude: -17.33 Azimuth: 357.39

Sun: Altitude: -48.98 Azimuth: 134.37

Moon: Altitude: -10.41 Azimuth: 65.71

Tavrida

Object: Altitude: -18.80 Azimuth: 353.41

Sun: Altitude: -43.67 Azimuth: 125.14

Moon: Altitude: -5.42 Azimuth: 60.27

SAAO

Object: Altitude: 54.51 Azimuth: 339.36

Sun: Altitude: -25.36 Azimuth: 56.65

Moon: Altitude: 38.36 Azimuth: 82.64

IAC

Object: Altitude: -14.82 Azimuth: 335.35

Sun: Altitude: -7.28 Azimuth: 81.43

Moon: Altitude: 33.14 Azimuth: 23.45

Argentina

Object: Altitude: 17.27 Azimuth: 335.49

Sun: Altitude: 47.99 Azimuth: 110.74

Moon: Altitude: 61.62 Azimuth: 263.40

Mexico

Object: Altitude: -54.82 Azimuth: 343.50

Sun: Altitude: 47.96 Azimuth: 357.87

Moon: Altitude: 1.19 Azimuth: 299.97

Ural

Object: Altitude: -30.85 Azimuth: 5.92

Sun: Altitude: -43.07 Azimuth: 164.42

Moon: Altitude: -24.53 Azimuth: 82.00

Vostryakovo

Object: Altitude: -29.14 Azimuth: 354.76

Sun: Altitude: -38.53 Azimuth: 136.51

Moon: Altitude: -12.53 Azimuth: 64.51

Gal. latitude: -53.468584 Gal. longitude: 309.499468

Dist. to Sun: 103.490464

Dist. to Moon: 66.375530

Moon coord.: (277.439490 d, -24.658321 d)

Sun coord.: (206.529997 d, -10.962348 d)

Lunar disk: 0.315712

Lunar phase: 111.627795

Lunar bright limb: 267.590101

No SN in this field

2025-01-10 20:33:19 (JD 2460686.356470)

Siderial time 6.437477 h

Ra 00:14:16.08 Dec -63:29:31.20
( 3.567000d, -63.492000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -76.74 Azimuth: 354.43

Sun: Altitude: -26.60 Azimuth: 272.82

Moon: Altitude: 4.75 Azimuth: 127.53

Tunka

Object: Altitude: -73.74 Azimuth: 35.84

Sun: Altitude: -41.53 Azimuth: 251.29

Moon: Altitude: 18.87 Azimuth: 109.69

Kislovodsk

Object: Altitude: -41.54 Azimuth: 36.20

Sun: Altitude: -66.40 Azimuth: 154.46

Moon: Altitude: 58.70 Azimuth: 68.17

Tavrida

Object: Altitude: -38.79 Azimuth: 34.93

Sun: Altitude: -62.22 Azimuth: 139.03

Moon: Altitude: 63.62 Azimuth: 55.42

SAAO

Object: Altitude: 34.70 Azimuth: 31.81

Sun: Altitude: -27.51 Azimuth: 34.13

Moon: Altitude: 29.87 Azimuth: 168.68

IAC

Object: Altitude: -6.79 Azimuth: 16.38

Sun: Altitude: -27.35 Azimuth: 78.58

Moon: Altitude: 66.66 Azimuth: 267.37

Argentina

Object: Altitude: 57.11 Azimuth: 348.57

Sun: Altitude: 38.39 Azimuth: 86.09

Moon: Altitude: -5.45 Azimuth: 241.69

Mexico

Object: Altitude: -14.02 Azimuth: 337.86

Sun: Altitude: 34.79 Azimuth: 18.57

Moon: Altitude: -8.73 Azimuth: 231.29

Ural

Object: Altitude: -58.55 Azimuth: 50.88

Sun: Altitude: -54.54 Azimuth: 190.11

Moon: Altitude: 43.83 Azimuth: 70.70

Vostryakovo

Object: Altitude: -48.64 Azimuth: 42.40

Sun: Altitude: -54.57 Azimuth: 154.78

Moon: Altitude: 54.99 Azimuth: 46.90

Gal. latitude: -53.468584 Gal. longitude: 309.499468

Dist. to Sun: 62.242230

Dist. to Moon: 103.694533

Moon coord.: (68.757912 d, 26.827703 d)

Sun coord.: (292.187919 d, -21.880040 d)

Lunar disk: 0.885295

Lunar phase: 39.593047

Lunar bright limb: 267.300393

No SN in this field
Recent coverage and limits telegrams

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

  ID = 3274
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 MAXI GRB201021.68 (trigger No 143544224,00h 13m 54.96s , -63d 33m 14.4s, R=1) errorbox  9280 sec after notice time and 13381 sec after trigger time at 2020-10-21 20:02:07 UT, with upper limit up to  20.3 mag. The observations began at zenith distance = 33 deg. The sun  altitude  is -35.3 deg. 

MASTER-OAFA robotic telescope  located in Argentina (OAFA observatory of San Juan National University) started inspect of the MAXI GRB201021.68 errorbox  22463 sec after notice time and 26564 sec after trigger time at 2020-10-21 23:41:50 UT, with upper limit up to  20.0 mag. Observations started at twilight.  The observations began at zenith distance = 42 deg. The sun  altitude  is -11.4 deg. 

The galactic latitude b = -53 deg., longitude l = 310 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1466495

We obtain a following upper limits.  

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

   13471 | 2020-10-21 20:02:07 |         MASTER-SAAO | (00h 15m 17.20s , -63d 33m 50.4s) |   C |   180 | 19.9 |        
   13471 | 2020-10-21 20:02:07 |         MASTER-SAAO | (00h 15m 17.20s , -63d 33m 50.4s) |   C |   180 | 19.9 |        
   13471 | 2020-10-21 20:02:07 |         MASTER-SAAO | (00h 13m 23.07s , -63d 34m 18.3s) |   C |   180 | 19.8 |        
   13471 | 2020-10-21 20:02:07 |         MASTER-SAAO | (00h 13m 23.07s , -63d 34m 18.3s) |   C |   180 | 19.8 |        
   13671 | 2020-10-21 20:05:27 |         MASTER-SAAO | (00h 15m 23.28s , -63d 34m 57.6s) |   C |   180 | 20.1 |        
   13671 | 2020-10-21 20:05:27 |         MASTER-SAAO | (00h 15m 23.28s , -63d 34m 57.6s) |   C |   180 | 20.1 |        
   13671 | 2020-10-21 20:05:27 |         MASTER-SAAO | (00h 13m 29.09s , -63d 35m 25.1s) |   C |   180 | 19.9 |        
   13671 | 2020-10-21 20:05:27 |         MASTER-SAAO | (00h 13m 29.09s , -63d 35m 25.1s) |   C |   180 | 19.9 |        
   13871 | 2020-10-21 20:08:46 |         MASTER-SAAO | (00h 15m 17.91s , -63d 36m 02.6s) |   C |   180 | 20.2 |        
   13871 | 2020-10-21 20:08:46 |         MASTER-SAAO | (00h 15m 17.92s , -63d 36m 02.6s) |   C |   180 | 20.2 |        
   13871 | 2020-10-21 20:08:46 |         MASTER-SAAO | (00h 13m 23.46s , -63d 36m 29.5s) |   C |   180 | 20.0 |        
   13871 | 2020-10-21 20:08:46 |         MASTER-SAAO | (00h 13m 23.46s , -63d 36m 29.5s) |   C |   180 | 20.0 |        
   14070 | 2020-10-21 20:12:06 |         MASTER-SAAO | (00h 15m 25.50s , -63d 35m 39.5s) |   C |   180 | 20.1 |        
   14070 | 2020-10-21 20:12:06 |         MASTER-SAAO | (00h 15m 25.50s , -63d 35m 39.6s) |   C |   180 | 20.1 |        
   14070 | 2020-10-21 20:12:06 |         MASTER-SAAO | (00h 13m 31.33s , -63d 36m 06.4s) |   C |   180 | 20.0 |        
   14070 | 2020-10-21 20:12:06 |         MASTER-SAAO | (00h 13m 31.33s , -63d 36m 06.4s) |   C |   180 | 20.0 |        
   14270 | 2020-10-21 20:15:26 |         MASTER-SAAO | (00h 15m 21.92s , -63d 34m 11.8s) |   C |   180 | 20.2 |        
   14270 | 2020-10-21 20:15:26 |         MASTER-SAAO | (00h 15m 21.92s , -63d 34m 11.8s) |   C |   180 | 20.2 |        
   14270 | 2020-10-21 20:15:26 |         MASTER-SAAO | (00h 13m 27.57s , -63d 34m 38.5s) |   C |   180 | 20.1 |        
   14270 | 2020-10-21 20:15:26 |         MASTER-SAAO | (00h 13m 27.57s , -63d 34m 38.5s) |   C |   180 | 20.1 |        
   14470 | 2020-10-21 20:18:45 |         MASTER-SAAO | (00h 15m 22.46s , -63d 36m 08.9s) |   C |   180 | 20.3 |        
   14470 | 2020-10-21 20:18:45 |         MASTER-SAAO | (00h 15m 22.46s , -63d 36m 08.9s) |   C |   180 | 20.3 |        
   14470 | 2020-10-21 20:18:45 |         MASTER-SAAO | (00h 13m 27.91s , -63d 36m 35.3s) |   C |   180 | 20.1 |        
   14470 | 2020-10-21 20:18:45 |         MASTER-SAAO | (00h 13m 27.91s , -63d 36m 35.3s) |   C |   180 | 20.1 |        
   26595 | 2020-10-21 23:41:50 |         MASTER-OAFA | (23h 49m 23.73s , -64d 49m 04.2s) |   C |    60 | 17.4 |        
   28543 | 2020-10-22 00:13:19 |         MASTER-OAFA | (00h 12m 58.78s , -64d 16m 58.5s) |   C |   180 | 19.1 |        
   28723 | 2020-10-22 00:13:19 |         MASTER-OAFA | (00h 12m 58.78s , -64d 16m 58.5s) |   C |   540 | 20.0 |  Coadd 
   28743 | 2020-10-22 00:16:38 |         MASTER-OAFA | (00h 12m 54.43s , -64d 17m 53.3s) |   C |   180 | 19.3 |        
   28942 | 2020-10-22 00:19:58 |         MASTER-OAFA | (00h 12m 54.23s , -64d 16m 57.3s) |   C |   180 | 19.4 |        
   29082 | 2020-10-22 00:23:17 |         MASTER-OAFA | (23h 49m 30.96s , -64d 48m 31.2s) |   C |    60 | 18.7 |        
   29162 | 2020-10-22 00:24:37 |         MASTER-OAFA | (00h 07m 43.65s , -64d 49m 29.9s) |   C |    60 | 18.8 |        
   29825 | 2020-10-22 00:35:41 |         MASTER-OAFA | (00h 07m 40.42s , -63d 23m 41.5s) |   C |    60 | 18.7 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 3268
TYPE = 35
DAYS = 0.5


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 MAXI GRB201021.68 (trigger No 143544224,00h 13m 54.96s , -63d 33m 14.4s, R=1) errorbox  9280 sec after notice time and 13381 sec after trigger time at 2020-10-21 20:02:07 UT, with upper limit up to  20.3 mag. The observations began at zenith distance = 33 deg. The sun  altitude  is -35.3 deg. 

MASTER-OAFA robotic telescope  located in Argentina (OAFA observatory of San Juan National University) started inspect of the MAXI GRB201021.68 errorbox  22463 sec after notice time and 26564 sec after trigger time at 2020-10-21 23:41:50 UT, with upper limit up to  20.0 mag. Observations started at twilight.  The observations began at zenith distance = 42 deg. The sun  altitude  is -11.4 deg. 

The galactic latitude b = -53 deg., longitude l = 310 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1466495

We obtain a following upper limits.  

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

   13471 | 2020-10-21 20:02:07 |         MASTER-SAAO | (00h 15m 17.20s , -63d 33m 50.4s) |   C |   180 | 19.9 |        
   13471 | 2020-10-21 20:02:07 |         MASTER-SAAO | (00h 15m 17.20s , -63d 33m 50.4s) |   C |   180 | 19.9 |        
   13471 | 2020-10-21 20:02:07 |         MASTER-SAAO | (00h 13m 23.07s , -63d 34m 18.3s) |   C |   180 | 19.8 |        
   13471 | 2020-10-21 20:02:07 |         MASTER-SAAO | (00h 13m 23.07s , -63d 34m 18.3s) |   C |   180 | 19.8 |        
   13671 | 2020-10-21 20:05:27 |         MASTER-SAAO | (00h 15m 23.28s , -63d 34m 57.6s) |   C |   180 | 20.1 |        
   13671 | 2020-10-21 20:05:27 |         MASTER-SAAO | (00h 15m 23.28s , -63d 34m 57.6s) |   C |   180 | 20.1 |        
   13671 | 2020-10-21 20:05:27 |         MASTER-SAAO | (00h 13m 29.09s , -63d 35m 25.1s) |   C |   180 | 19.9 |        
   13671 | 2020-10-21 20:05:27 |         MASTER-SAAO | (00h 13m 29.09s , -63d 35m 25.1s) |   C |   180 | 19.9 |        
   13871 | 2020-10-21 20:08:46 |         MASTER-SAAO | (00h 15m 17.91s , -63d 36m 02.6s) |   C |   180 | 20.2 |        
   13871 | 2020-10-21 20:08:46 |         MASTER-SAAO | (00h 15m 17.92s , -63d 36m 02.6s) |   C |   180 | 20.2 |        
   13871 | 2020-10-21 20:08:46 |         MASTER-SAAO | (00h 13m 23.46s , -63d 36m 29.5s) |   C |   180 | 20.0 |        
   13871 | 2020-10-21 20:08:46 |         MASTER-SAAO | (00h 13m 23.46s , -63d 36m 29.5s) |   C |   180 | 20.0 |        
   14070 | 2020-10-21 20:12:06 |         MASTER-SAAO | (00h 15m 25.50s , -63d 35m 39.5s) |   C |   180 | 20.1 |        
   14070 | 2020-10-21 20:12:06 |         MASTER-SAAO | (00h 15m 25.50s , -63d 35m 39.6s) |   C |   180 | 20.1 |        
   14070 | 2020-10-21 20:12:06 |         MASTER-SAAO | (00h 13m 31.33s , -63d 36m 06.4s) |   C |   180 | 20.0 |        
   14070 | 2020-10-21 20:12:06 |         MASTER-SAAO | (00h 13m 31.33s , -63d 36m 06.4s) |   C |   180 | 20.0 |        
   14270 | 2020-10-21 20:15:26 |         MASTER-SAAO | (00h 15m 21.92s , -63d 34m 11.8s) |   C |   180 | 20.2 |        
   14270 | 2020-10-21 20:15:26 |         MASTER-SAAO | (00h 15m 21.92s , -63d 34m 11.8s) |   C |   180 | 20.2 |        
   14270 | 2020-10-21 20:15:26 |         MASTER-SAAO | (00h 13m 27.57s , -63d 34m 38.5s) |   C |   180 | 20.1 |        
   14270 | 2020-10-21 20:15:26 |         MASTER-SAAO | (00h 13m 27.57s , -63d 34m 38.5s) |   C |   180 | 20.1 |        
   14470 | 2020-10-21 20:18:45 |         MASTER-SAAO | (00h 15m 22.46s , -63d 36m 08.9s) |   C |   180 | 20.3 |        
   14470 | 2020-10-21 20:18:45 |         MASTER-SAAO | (00h 15m 22.46s , -63d 36m 08.9s) |   C |   180 | 20.3 |        
   14470 | 2020-10-21 20:18:45 |         MASTER-SAAO | (00h 13m 27.91s , -63d 36m 35.3s) |   C |   180 | 20.1 |        
   14470 | 2020-10-21 20:18:45 |         MASTER-SAAO | (00h 13m 27.91s , -63d 36m 35.3s) |   C |   180 | 20.1 |        
   26595 | 2020-10-21 23:41:50 |         MASTER-OAFA | (23h 49m 23.73s , -64d 49m 04.2s) |   C |    60 | 17.4 |        
   28543 | 2020-10-22 00:13:19 |         MASTER-OAFA | (00h 12m 58.78s , -64d 16m 58.5s) |   C |   180 | 19.1 |        
   28723 | 2020-10-22 00:13:19 |         MASTER-OAFA | (00h 12m 58.78s , -64d 16m 58.5s) |   C |   540 | 20.0 |  Coadd 
   28743 | 2020-10-22 00:16:38 |         MASTER-OAFA | (00h 12m 54.43s , -64d 17m 53.3s) |   C |   180 | 19.3 |        
   28942 | 2020-10-22 00:19:58 |         MASTER-OAFA | (00h 12m 54.23s , -64d 16m 57.3s) |   C |   180 | 19.4 |        
   29082 | 2020-10-22 00:23:17 |         MASTER-OAFA | (23h 49m 30.96s , -64d 48m 31.2s) |   C |    60 | 18.7 |        
   29162 | 2020-10-22 00:24:37 |         MASTER-OAFA | (00h 07m 43.65s , -64d 49m 29.9s) |   C |    60 | 18.8 |        
   29825 | 2020-10-22 00:35:41 |         MASTER-OAFA | (00h 07m 40.42s , -63d 23m 41.5s) |   C |    60 | 18.7 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 3262
TYPE = 34
DAYS = 0


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 MAXI GRB201021.68 (trigger No 143544224,00h 14m 16.08s , -63d 29m 31.2s, R=1) errorbox  9280 sec after notice time and 13381 sec after trigger time at 2020-10-21 20:02:07 UT, with upper limit up to  20.2 mag. The observations began at zenith distance = 33 deg. The sun  altitude  is -35.3 deg. 

The galactic latitude b = -53 deg., longitude l = 309 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1466520

We obtain a following upper limits.  

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

   13471 | 2020-10-21 20:02:07 |         MASTER-SAAO | (00h 15m 17.20s , -63d 33m 50.4s) |   C |   180 | 19.9 |        
   13471 | 2020-10-21 20:02:07 |         MASTER-SAAO | (00h 13m 23.07s , -63d 34m 18.3s) |   C |   180 | 19.8 |        
   13671 | 2020-10-21 20:05:27 |         MASTER-SAAO | (00h 15m 23.28s , -63d 34m 57.6s) |   C |   180 | 20.1 |        
   13671 | 2020-10-21 20:05:27 |         MASTER-SAAO | (00h 13m 29.09s , -63d 35m 25.1s) |   C |   180 | 19.9 |        
   13871 | 2020-10-21 20:08:46 |         MASTER-SAAO | (00h 15m 17.91s , -63d 36m 02.6s) |   C |   180 | 20.2 |        
   13871 | 2020-10-21 20:08:46 |         MASTER-SAAO | (00h 13m 23.46s , -63d 36m 29.5s) |   C |   180 | 20.0 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 3261
TYPE = 35
DAYS = 0


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 MAXI GRB201021.68 (trigger No 143544224,00h 14m 16.08s , -63d 29m 31.2s, R=1) errorbox  9280 sec after notice time and 13381 sec after trigger time at 2020-10-21 20:02:07 UT, with upper limit up to  20.2 mag. The observations began at zenith distance = 33 deg. The sun  altitude  is -35.3 deg. 

The galactic latitude b = -53 deg., longitude l = 309 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1466520

We obtain a following upper limits.  

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

   13471 | 2020-10-21 20:02:07 |         MASTER-SAAO | (00h 15m 17.20s , -63d 33m 50.4s) |   C |   180 | 19.9 |        
   13471 | 2020-10-21 20:02:07 |         MASTER-SAAO | (00h 13m 23.07s , -63d 34m 18.3s) |   C |   180 | 19.8 |        
   13671 | 2020-10-21 20:05:27 |         MASTER-SAAO | (00h 15m 23.28s , -63d 34m 57.6s) |   C |   180 | 20.1 |        
   13671 | 2020-10-21 20:05:27 |         MASTER-SAAO | (00h 13m 29.09s , -63d 35m 25.1s) |   C |   180 | 19.9 |        
   13871 | 2020-10-21 20:08:46 |         MASTER-SAAO | (00h 15m 17.91s , -63d 36m 02.6s) |   C |   180 | 20.2 |        
   13871 | 2020-10-21 20:08:46 |         MASTER-SAAO | (00h 13m 23.46s , -63d 36m 29.5s) |   C |   180 | 20.0 |        
Filter C is a clear (unfiltred) band. 


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

MASTER, 2002-2025