MASTER Net MASTER Database: GRB210204.78 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 GRB210204.78
Trignum 634156744
Trigger time 2021-02-04 18:38:59.57
Notice time 2021-02-04 18:48:37.538258
Coord, eb (18h 09m 57.60s , -54d 48m 36.0s) , 2.39
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
1540065 2021-02-04 18:48:37.538258 18h 09m 57.60s -54d 48m 36.0s FERMI 2.39 alert 634156744 18 115 alert
1540058 2021-02-04 18:39:40.010934 14h 57m 38.40s -40d 12m 00.0s FERMI 6.49 alert 634156744 29 112 alert
1540052 2021-02-04 18:39:14.769248 15h 55m 40.08s -47d 40m 01.2s FERMI 18.72 alert 634156744 45 111 alert

DAYS:

MASTER optical transients in this field
MASTER OT (J2000.0) Сoordinates Datetime Published Mag Site Image
J181033.77-534946.3 (18h 10m 33.77s , -53d 49m 46.3s) 2021-02-05 00:42:39.168 AT2021but on 2021-02-05 16:30:07.842414 15.248 SAAO Transient on SAAO

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

2021-02-04 18:38:59 (JD 2459250.277072)

Siderial time 6.167396 h

Ra 18:09:57.60 Dec -54:48:36.00
(272.490000d, -54.810000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -39.03 Azimuth: 312.11

Sun: Altitude: -40.86 Azimuth: 242.02

Moon: Altitude: 15.58 Azimuth: 317.28

Tunka

Object: Altitude: -52.21 Azimuth: 301.18

Sun: Altitude: -51.01 Azimuth: 210.85

Moon: Altitude: 2.49 Azimuth: 296.89

Kislovodsk

Object: Altitude: -78.49 Azimuth: 345.65

Sun: Altitude: -45.73 Azimuth: 115.63

Moon: Altitude: -36.46 Azimuth: 253.42

Tavrida

Object: Altitude: -79.66 Azimuth: 11.57

Sun: Altitude: -39.71 Azimuth: 108.42

Moon: Altitude: -41.81 Azimuth: 244.97

SAAO

Object: Altitude: -1.62 Azimuth: 9.58

Sun: Altitude: -12.98 Azimuth: 61.13

Moon: Altitude: -34.81 Azimuth: 322.61

IAC

Object: Altitude: -43.23 Azimuth: 39.85

Sun: Altitude: 0.86 Azimuth: 71.18

Moon: Altitude: -74.70 Azimuth: 155.94

Argentina

Object: Altitude: 34.98 Azimuth: 42.29

Sun: Altitude: 60.70 Azimuth: 116.05

Moon: Altitude: -17.03 Azimuth: 60.55

Mexico

Object: Altitude: -0.17 Azimuth: 17.79

Sun: Altitude: 41.03 Azimuth: 342.27

Moon: Altitude: 1.22 Azimuth: 72.60

Ural

Object: Altitude: -77.56 Azimuth: 268.98

Sun: Altitude: -45.26 Azimuth: 146.41

Moon: Altitude: -22.88 Azimuth: 260.69

Vostryakovo

Object: Altitude: -89.42 Azimuth: 192.09

Sun: Altitude: -37.56 Azimuth: 119.93

Moon: Altitude: -34.80 Azimuth: 241.24

Gal. latitude: -16.819788 Gal. longitude: 339.393795

Dist. to Sun: 52.261447

Dist. to Moon: 54.824052

Moon coord.: (224.752230 d, -14.190617 d)

Sun coord.: (318.340014 d, -16.079636 d)

Lunar disk: 0.496515

Lunar phase: 90.399405

Lunar bright limb: 106.467481

No SN in this field

2021-02-04 18:48:37 (JD 2459250.283762)

Siderial time 6.328391 h

Ra 18:09:57.60 Dec -54:48:36.00
(272.490000d, -54.810000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -37.89 Azimuth: 313.14

Sun: Altitude: -39.49 Azimuth: 244.46

Moon: Altitude: 16.54 Azimuth: 319.41

Tunka

Object: Altitude: -50.94 Azimuth: 302.09

Sun: Altitude: -50.21 Azimuth: 214.27

Moon: Altitude: 3.74 Azimuth: 298.77

Kislovodsk

Object: Altitude: -77.96 Azimuth: 339.33

Sun: Altitude: -47.28 Azimuth: 118.12

Moon: Altitude: -34.87 Azimuth: 255.38

Tavrida

Object: Altitude: -79.89 Azimuth: 3.83

Sun: Altitude: -41.32 Azimuth: 110.60

Moon: Altitude: -40.33 Azimuth: 247.22

SAAO

Object: Altitude: -1.94 Azimuth: 8.23

Sun: Altitude: -14.75 Azimuth: 59.60

Moon: Altitude: -33.56 Azimuth: 320.34

IAC

Object: Altitude: -44.59 Azimuth: 39.42

Sun: Altitude: -1.15 Azimuth: 72.32

Moon: Altitude: -75.43 Azimuth: 164.22

Argentina

Object: Altitude: 33.60 Azimuth: 42.05

Sun: Altitude: 58.84 Azimuth: 113.32

Moon: Altitude: -18.71 Azimuth: 58.98

Mexico

Object: Altitude: -0.82 Azimuth: 19.02

Sun: Altitude: 41.61 Azimuth: 345.25

Moon: Altitude: -0.71 Azimuth: 73.77

Ural

Object: Altitude: -76.25 Azimuth: 271.01

Sun: Altitude: -45.96 Azimuth: 149.57

Moon: Altitude: -21.66 Azimuth: 262.73

Vostryakovo

Object: Altitude: -88.39 Azimuth: 250.27

Sun: Altitude: -38.73 Azimuth: 122.47

Moon: Altitude: -33.65 Azimuth: 243.59

Gal. latitude: -16.819788 Gal. longitude: 339.393795

Dist. to Sun: 52.266551

Dist. to Moon: 54.749349

Moon coord.: (224.843404 d, -14.224137 d)

Sun coord.: (318.346753 d, -16.077621 d)

Lunar disk: 0.495751

Lunar phase: 90.486876

Lunar bright limb: 106.444764

No SN in this field

2021-02-04 19:48:37 (JD 2459250.325428)

Siderial time 7.331129 h

Ra 18:09:57.60 Dec -54:48:36.00
(272.490000d, -54.810000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -31.28 Azimuth: 319.93

Sun: Altitude: -30.42 Azimuth: 258.17

Moon: Altitude: 21.47 Azimuth: 333.30

Tunka

Object: Altitude: -43.33 Azimuth: 308.17

Sun: Altitude: -43.78 Azimuth: 233.26

Moon: Altitude: 10.90 Azimuth: 310.94

Kislovodsk

Object: Altitude: -71.81 Azimuth: 315.32

Sun: Altitude: -55.88 Azimuth: 136.87

Moon: Altitude: -24.70 Azimuth: 266.54

Tavrida

Object: Altitude: -76.56 Azimuth: 323.51

Sun: Altitude: -50.67 Azimuth: 126.48

Moon: Altitude: -30.63 Azimuth: 259.70

SAAO

Object: Altitude: -2.81 Azimuth: 359.61

Sun: Altitude: -25.05 Azimuth: 48.85

Moon: Altitude: -24.61 Azimuth: 307.96

IAC

Object: Altitude: -52.61 Azimuth: 34.51

Sun: Altitude: -13.94 Azimuth: 79.04

Moon: Altitude: -73.09 Azimuth: 217.06

Argentina

Object: Altitude: 25.22 Azimuth: 39.57

Sun: Altitude: 46.64 Azimuth: 100.50

Moon: Altitude: -28.46 Azimuth: 47.96

Mexico

Object: Altitude: -5.78 Azimuth: 26.12

Sun: Altitude: 42.76 Azimuth: 4.68

Moon: Altitude: -12.90 Azimuth: 80.76

Ural

Object: Altitude: -68.12 Azimuth: 280.99

Sun: Altitude: -48.74 Azimuth: 170.51

Moon: Altitude: -13.97 Azimuth: 275.07

Vostryakovo

Object: Altitude: -79.90 Azimuth: 274.05

Sun: Altitude: -45.13 Azimuth: 139.89

Moon: Altitude: -26.09 Azimuth: 257.24

Gal. latitude: -16.819788 Gal. longitude: 339.393795

Dist. to Sun: 52.298344

Dist. to Moon: 54.285033

Moon coord.: (225.411846 d, -14.432118 d)

Sun coord.: (318.388718 d, -16.065062 d)

Lunar disk: 0.490998

Lunar phase: 91.031648

Lunar bright limb: 106.301745

No SN in this field

2024-10-04 12:21:44 (JD 2460588.015093)

Siderial time 15.782427 h

Ra 18:09:57.60 Dec -54:48:36.00
(272.490000d, -54.810000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -24.41 Azimuth: 30.84

Sun: Altitude: -31.28 Azimuth: 126.01

Moon: Altitude: -28.96 Azimuth: 104.38

Tunka

Object: Altitude: -19.44 Azimuth: 17.62

Sun: Altitude: -16.84 Azimuth: 104.56

Moon: Altitude: -13.61 Azimuth: 85.33

Kislovodsk

Object: Altitude: -11.99 Azimuth: 342.42

Sun: Altitude: 23.41 Azimuth: 57.76

Moon: Altitude: 24.71 Azimuth: 37.18

Tavrida

Object: Altitude: -14.99 Azimuth: 337.77

Sun: Altitude: 27.75 Azimuth: 49.72

Moon: Altitude: 27.19 Azimuth: 28.49

SAAO

Object: Altitude: 47.18 Azimuth: 317.68

Sun: Altitude: 50.85 Azimuth: 129.13

Moon: Altitude: 67.87 Azimuth: 145.53

IAC

Object: Altitude: -22.73 Azimuth: 321.33

Sun: Altitude: 56.31 Azimuth: 345.70

Moon: Altitude: 41.85 Azimuth: 327.01

Argentina

Object: Altitude: 2.35 Azimuth: 339.54

Sun: Altitude: 27.13 Azimuth: 257.67

Moon: Altitude: 17.61 Azimuth: 275.27

Mexico

Object: Altitude: -66.09 Azimuth: 5.35

Sun: Altitude: -12.41 Azimuth: 267.81

Moon: Altitude: -31.23 Azimuth: 267.37

Ural

Object: Altitude: -22.41 Azimuth: 351.43

Sun: Altitude: 7.80 Azimuth: 69.06

Moon: Altitude: 7.69 Azimuth: 50.06

Vostryakovo

Object: Altitude: -23.97 Azimuth: 338.48

Sun: Altitude: 19.00 Azimuth: 49.80

Moon: Altitude: 16.71 Azimuth: 30.16

Gal. latitude: -16.819788 Gal. longitude: 339.393795

Dist. to Sun: 81.689443

Dist. to Moon: 64.790578

Moon coord.: (207.264390 d, -13.525326 d)

Sun coord.: (190.505509 d, -4.521788 d)

Lunar disk: 0.026857

Lunar phase: 161.135563

Lunar bright limb: 297.020077

No SN in this field
Recent coverage and limits telegrams

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

  ID = 3729
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 GRB 210204B ( Fermi GBM team, GCN 29394) errorbox  19603 sec after notice time and 19610 sec after trigger time at 2021-02-05 00:05:50 UT, with upper limit up to  18.1 mag. The observations began at zenith distance = 75 deg. The sun  altitude  is -38.9 deg. 

MASTER-OAFA robotic telescope  located in Argentina (OAFA observatory of San Juan National University) started inspect of the FERMI GRB 210204B errorbox  1 days 41294 sec after notice time and 1 days 41301 sec after trigger time at 2021-02-06 06:07:20 UT, with upper limit up to  17.9 mag. The observations began at zenith distance = 76 deg. The sun  altitude  is -39.7 deg. 

The galactic latitude b = -17 deg., longitude l = 339 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1540059

We obtain a following upper limits.  

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

   19640 | 2021-02-05 00:05:50 |         MASTER-SAAO | (18h 03m 24.86s , -58d 03m 48.4s) |   C |    60 | 17.7 |        
   20217 | 2021-02-05 00:15:26 |         MASTER-SAAO | (18h 03m 55.82s , -56d 04m 08.1s) |   C |    60 | 17.8 |        
   20555 | 2021-02-05 00:21:04 |         MASTER-SAAO | (18h 03m 18.65s , -58d 02m 16.0s) |   C |    60 | 17.9 |        
   20635 | 2021-02-05 00:22:24 |         MASTER-SAAO | (18h 10m 58.28s , -58d 03m 18.1s) |   C |    60 | 17.9 |        
   20893 | 2021-02-05 00:26:42 |         MASTER-SAAO | (18h 05m 36.28s , -54d 04m 17.6s) |   C |    60 | 17.7 |        
   21132 | 2021-02-05 00:30:41 |         MASTER-SAAO | (18h 03m 50.26s , -56d 04m 25.2s) |   C |    60 | 17.9 |        
   21211 | 2021-02-05 00:32:00 |         MASTER-SAAO | (18h 11m 05.22s , -56d 04m 25.2s) |   C |    60 | 18.0 |        
   21451 | 2021-02-05 00:36:00 |         MASTER-SAAO | (17h 45m 06.55s , -54d 03m 21.5s) |   C |    60 | 17.8 |        
   21530 | 2021-02-05 00:37:19 |         MASTER-SAAO | (18h 03m 17.60s , -58d 02m 28.3s) |   C |    60 | 17.9 |        
   21610 | 2021-02-05 00:38:39 |         MASTER-SAAO | (18h 10m 56.86s , -58d 03m 34.0s) |   C |    60 | 18.1 |        
   21690 | 2021-02-05 00:39:59 |         MASTER-SAAO | (18h 08m 29.00s , -52d 04m 20.4s) |   C |    60 | 17.7 |        
   21769 | 2021-02-05 00:41:19 |         MASTER-SAAO | (18h 32m 31.40s , -56d 04m 30.4s) |   C |    60 | 17.8 |        
   21849 | 2021-02-05 00:42:38 |         MASTER-SAAO | (18h 05m 39.25s , -54d 02m 48.5s) |   C |    60 | 17.9 |        
   21929 | 2021-02-05 00:43:58 |         MASTER-SAAO | (18h 12m 20.73s , -54d 03m 45.5s) |   C |    60 | 17.9 |        
  127731 | 2021-02-06 06:07:20 |         MASTER-OAFA | (18h 00m 04.94s , -54d 40m 05.4s) |   C |    60 | 17.5 |        
  127824 | 2021-02-06 06:08:53 |         MASTER-OAFA | (17h 58m 01.05s , -55d 16m 16.0s) |   C |    60 | 17.2 |        
  128432 | 2021-02-06 06:19:01 |         MASTER-OAFA | (18h 02m 54.67s , -51d 17m 35.2s) |   C |    60 | 17.0 |        
  128526 | 2021-02-06 06:20:35 |         MASTER-OAFA | (17h 57m 19.94s , -58d 40m 21.8s) |   C |    60 | 17.5 |        
  128617 | 2021-02-06 06:22:06 |         MASTER-OAFA | (18h 26m 36.59s , -55d 17m 07.8s) |   C |    60 | 17.1 |        
  128709 | 2021-02-06 06:23:38 |         MASTER-OAFA | (18h 00m 00.87s , -54d 41m 18.2s) |   C |    60 | 17.5 |        
  128801 | 2021-02-06 06:25:10 |         MASTER-OAFA | (18h 13m 28.21s , -53d 16m 17.2s) |   C |    60 | 17.1 |        
  129456 | 2021-02-06 06:36:05 |         MASTER-OAFA | (18h 03m 11.23s , -52d 39m 52.5s) |   C |    60 | 17.7 |        
  129549 | 2021-02-06 06:37:38 |         MASTER-OAFA | (18h 16m 00.65s , -51d 18m 37.6s) |   C |    60 | 17.0 |        
  129640 | 2021-02-06 06:39:09 |         MASTER-OAFA | (17h 57m 27.92s , -58d 40m 01.5s) |   C |    60 | 17.7 |        
  129732 | 2021-02-06 06:40:41 |         MASTER-OAFA | (18h 12m 17.67s , -57d 18m 12.8s) |   C |    60 | 17.5 |        
  129826 | 2021-02-06 06:42:15 |         MASTER-OAFA | (18h 26m 45.84s , -56d 40m 29.2s) |   C |    60 | 17.8 |        
  130010 | 2021-02-06 06:45:19 |         MASTER-OAFA | (18h 00m 04.00s , -54d 41m 50.9s) |   C |    60 | 17.6 |        
  130090 | 2021-02-06 06:46:39 |         MASTER-OAFA | (18h 13m 48.49s , -54d 42m 03.2s) |   C |    60 | 17.8 |        
  130169 | 2021-02-06 06:47:58 |         MASTER-OAFA | (17h 58m 10.97s , -56d 40m 06.1s) |   C |    60 | 17.8 |        
  130249 | 2021-02-06 06:49:18 |         MASTER-OAFA | (18h 12m 29.72s , -56d 41m 55.8s) |   C |    60 | 17.9 |        
  130340 | 2021-02-06 06:50:49 |         MASTER-OAFA | (18h 27m 08.89s , -53d 18m 16.1s) |   C |    60 | 17.1 |        
  130432 | 2021-02-06 06:52:21 |         MASTER-OAFA | (18h 03m 06.53s , -52d 39m 54.4s) |   C |    60 | 17.6 |        
  130511 | 2021-02-06 06:53:40 |         MASTER-OAFA | (18h 16m 12.47s , -52d 41m 11.7s) |   C |    60 | 17.7 |        
  130591 | 2021-02-06 06:55:00 |         MASTER-OAFA | (17h 57m 21.06s , -58d 41m 43.8s) |   C |    60 | 17.8 |        
  130671 | 2021-02-06 06:56:20 |         MASTER-OAFA | (18h 12m 34.39s , -58d 42m 05.4s) |   C |    60 | 17.9 |        
  130763 | 2021-02-06 06:57:52 |         MASTER-OAFA | (18h 26m 39.09s , -55d 17m 37.7s) |   C |    60 | 17.4 |        
  131015 | 2021-02-06 07:02:04 |         MASTER-OAFA | (18h 13m 40.94s , -54d 40m 10.7s) |   C |    60 | 17.9 |        
  131174 | 2021-02-06 07:04:43 |         MASTER-OAFA | (18h 12m 32.56s , -56d 41m 40.3s) |   C |    60 | 17.9 |        
  131254 | 2021-02-06 07:06:03 |         MASTER-OAFA | (18h 27m 22.68s , -54d 40m 34.5s) |   C |    60 | 17.8 |        
  131436 | 2021-02-06 07:09:05 |         MASTER-OAFA | (18h 16m 12.79s , -52d 40m 33.7s) |   C |    60 | 17.7 |        
  131595 | 2021-02-06 07:11:44 |         MASTER-OAFA | (18h 12m 33.13s , -58d 41m 09.4s) |   C |    60 | 17.9 |        
  131675 | 2021-02-06 07:13:04 |         MASTER-OAFA | (18h 29m 13.93s , -52d 42m 25.5s) |   C |    60 | 17.7 |        
  131992 | 2021-02-06 07:18:22 |         MASTER-OAFA | (17h 46m 28.31s , -54d 39m 32.0s) |   C |    60 | 17.7 |        
  132152 | 2021-02-06 07:21:01 |         MASTER-OAFA | (17h 43m 49.13s , -56d 41m 28.6s) |   C |    60 | 17.8 |        
  132231 | 2021-02-06 07:22:20 |         MASTER-OAFA | (18h 27m 25.89s , -54d 42m 26.0s) |   C |    60 | 17.9 |        
  132391 | 2021-02-06 07:25:00 |         MASTER-OAFA | (18h 07m 13.99s , -50d 40m 13.3s) |   C |    60 | 17.8 |        
  132629 | 2021-02-06 07:28:58 |         MASTER-OAFA | (18h 29m 13.80s , -52d 41m 38.7s) |   C |    60 | 17.7 |        
  133030 | 2021-02-06 07:35:39 |         MASTER-OAFA | (17h 46m 33.95s , -54d 39m 48.8s) |   C |    60 | 17.8 |        
  133188 | 2021-02-06 07:38:17 |         MASTER-OAFA | (17h 43m 49.36s , -56d 39m 35.0s) |   C |    60 | 17.9 |        
  133347 | 2021-02-06 07:40:56 |         MASTER-OAFA | (18h 07m 07.75s , -50d 42m 13.1s) |   C |    60 | 17.8 |        
  133426 | 2021-02-06 07:42:15 |         MASTER-OAFA | (18h 19m 40.97s , -50d 42m 15.6s) |   C |    60 | 17.8 |        
  133665 | 2021-02-06 07:46:14 |         MASTER-OAFA | (18h 29m 12.60s , -52d 40m 55.5s) |   C |    60 | 17.9 |        
  133983 | 2021-02-06 07:51:32 |         MASTER-OAFA | (17h 46m 27.37s , -54d 41m 43.2s) |   C |    60 | 17.9 |        
  134142 | 2021-02-06 07:54:11 |         MASTER-OAFA | (17h 43m 52.69s , -56d 41m 09.5s) |   C |    60 | 17.9 |        
  134301 | 2021-02-06 07:56:50 |         MASTER-OAFA | (18h 07m 08.38s , -50d 40m 17.4s) |   C |    60 | 17.9 |        
  134380 | 2021-02-06 07:58:10 |         MASTER-OAFA | (18h 19m 41.60s , -50d 41m 36.3s) |   C |    60 | 17.8 |        
  135305 | 2021-02-06 08:13:34 |         MASTER-OAFA | (18h 19m 34.46s , -50d 41m 44.2s) |   C |    60 | 17.9 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 3725
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 GRB 210204B ( Fermi GBM team, GCN 29394) errorbox  19603 sec after notice time and 19610 sec after trigger time at 2021-02-05 00:05:50 UT, with upper limit up to  18.1 mag. The observations began at zenith distance = 75 deg. The sun  altitude  is -38.9 deg. 

The galactic latitude b = -17 deg., longitude l = 339 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1540065

We obtain a following upper limits.  

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

   19640 | 2021-02-05 00:05:50 |         MASTER-SAAO | (18h 03m 24.86s , -58d 03m 48.4s) |   C |    60 | 17.7 |        
   20217 | 2021-02-05 00:15:26 |         MASTER-SAAO | (18h 03m 55.82s , -56d 04m 08.1s) |   C |    60 | 17.8 |        
   20555 | 2021-02-05 00:21:04 |         MASTER-SAAO | (18h 03m 18.65s , -58d 02m 16.0s) |   C |    60 | 17.9 |        
   20635 | 2021-02-05 00:22:24 |         MASTER-SAAO | (18h 10m 58.28s , -58d 03m 18.1s) |   C |    60 | 17.9 |        
   20893 | 2021-02-05 00:26:42 |         MASTER-SAAO | (18h 05m 36.28s , -54d 04m 17.6s) |   C |    60 | 17.7 |        
   21132 | 2021-02-05 00:30:41 |         MASTER-SAAO | (18h 03m 50.26s , -56d 04m 25.2s) |   C |    60 | 17.9 |        
   21211 | 2021-02-05 00:32:00 |         MASTER-SAAO | (18h 11m 05.22s , -56d 04m 25.2s) |   C |    60 | 18.0 |        
   21451 | 2021-02-05 00:36:00 |         MASTER-SAAO | (17h 45m 06.55s , -54d 03m 21.5s) |   C |    60 | 17.8 |        
   21530 | 2021-02-05 00:37:19 |         MASTER-SAAO | (18h 03m 17.60s , -58d 02m 28.3s) |   C |    60 | 17.9 |        
   21610 | 2021-02-05 00:38:39 |         MASTER-SAAO | (18h 10m 56.86s , -58d 03m 34.0s) |   C |    60 | 18.1 |        
   21690 | 2021-02-05 00:39:59 |         MASTER-SAAO | (18h 08m 29.00s , -52d 04m 20.4s) |   C |    60 | 17.7 |        
   21769 | 2021-02-05 00:41:19 |         MASTER-SAAO | (18h 32m 31.40s , -56d 04m 30.4s) |   C |    60 | 17.8 |        
   21849 | 2021-02-05 00:42:38 |         MASTER-SAAO | (18h 05m 39.25s , -54d 02m 48.5s) |   C |    60 | 17.9 |        
   21929 | 2021-02-05 00:43:58 |         MASTER-SAAO | (18h 12m 20.73s , -54d 03m 45.5s) |   C |    60 | 17.9 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 3718
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 FERMI GRB 210204B ( Fermi GBM team, GCN 29394) errorbox  19603 sec after notice time and 19610 sec after trigger time at 2021-02-05 00:05:50 UT, with upper limit up to  18.1 mag. The observations began at zenith distance = 75 deg. The sun  altitude  is -38.9 deg. 

The galactic latitude b = -17 deg., longitude l = 339 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1540065

We obtain a following upper limits.  

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

   19640 | 2021-02-05 00:05:50 |         MASTER-SAAO | (18h 03m 24.86s , -58d 03m 48.4s) |   C |    60 | 17.7 |        
   20217 | 2021-02-05 00:15:26 |         MASTER-SAAO | (18h 03m 55.82s , -56d 04m 08.1s) |   C |    60 | 17.8 |        
   20555 | 2021-02-05 00:21:04 |         MASTER-SAAO | (18h 03m 18.65s , -58d 02m 16.0s) |   C |    60 | 17.9 |        
   20635 | 2021-02-05 00:22:24 |         MASTER-SAAO | (18h 10m 58.28s , -58d 03m 18.1s) |   C |    60 | 17.9 |        
   20893 | 2021-02-05 00:26:42 |         MASTER-SAAO | (18h 05m 36.28s , -54d 04m 17.6s) |   C |    60 | 17.7 |        
   21132 | 2021-02-05 00:30:41 |         MASTER-SAAO | (18h 03m 50.26s , -56d 04m 25.2s) |   C |    60 | 17.9 |        
   21211 | 2021-02-05 00:32:00 |         MASTER-SAAO | (18h 11m 05.22s , -56d 04m 25.2s) |   C |    60 | 18.0 |        
   21451 | 2021-02-05 00:36:00 |         MASTER-SAAO | (17h 45m 06.55s , -54d 03m 21.5s) |   C |    60 | 17.8 |        
   21530 | 2021-02-05 00:37:19 |         MASTER-SAAO | (18h 03m 17.60s , -58d 02m 28.3s) |   C |    60 | 17.9 |        
   21610 | 2021-02-05 00:38:39 |         MASTER-SAAO | (18h 10m 56.86s , -58d 03m 34.0s) |   C |    60 | 18.1 |        
   21690 | 2021-02-05 00:39:59 |         MASTER-SAAO | (18h 08m 29.00s , -52d 04m 20.4s) |   C |    60 | 17.7 |        
   21769 | 2021-02-05 00:41:19 |         MASTER-SAAO | (18h 32m 31.40s , -56d 04m 30.4s) |   C |    60 | 17.8 |        
   21849 | 2021-02-05 00:42:38 |         MASTER-SAAO | (18h 05m 39.25s , -54d 02m 48.5s) |   C |    60 | 17.9 |        
   21929 | 2021-02-05 00:43:58 |         MASTER-SAAO | (18h 12m 20.73s , -54d 03m 45.5s) |   C |    60 | 17.9 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 3717
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 FERMI GRB 210204B ( Fermi GBM team, GCN 29394) errorbox  19603 sec after notice time and 19610 sec after trigger time at 2021-02-05 00:05:50 UT, with upper limit up to  18.1 mag. The observations began at zenith distance = 75 deg. The sun  altitude  is -38.9 deg. 

The galactic latitude b = -17 deg., longitude l = 339 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1540065

We obtain a following upper limits.  

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

   19640 | 2021-02-05 00:05:50 |         MASTER-SAAO | (18h 03m 24.86s , -58d 03m 48.4s) |   C |    60 | 17.7 |        
   20217 | 2021-02-05 00:15:26 |         MASTER-SAAO | (18h 03m 55.82s , -56d 04m 08.1s) |   C |    60 | 17.8 |        
   20555 | 2021-02-05 00:21:04 |         MASTER-SAAO | (18h 03m 18.65s , -58d 02m 16.0s) |   C |    60 | 17.9 |        
   20635 | 2021-02-05 00:22:24 |         MASTER-SAAO | (18h 10m 58.28s , -58d 03m 18.1s) |   C |    60 | 17.9 |        
   20893 | 2021-02-05 00:26:42 |         MASTER-SAAO | (18h 05m 36.28s , -54d 04m 17.6s) |   C |    60 | 17.7 |        
   21132 | 2021-02-05 00:30:41 |         MASTER-SAAO | (18h 03m 50.26s , -56d 04m 25.2s) |   C |    60 | 17.9 |        
   21211 | 2021-02-05 00:32:00 |         MASTER-SAAO | (18h 11m 05.22s , -56d 04m 25.2s) |   C |    60 | 18.0 |        
   21451 | 2021-02-05 00:36:00 |         MASTER-SAAO | (17h 45m 06.55s , -54d 03m 21.5s) |   C |    60 | 17.8 |        
   21530 | 2021-02-05 00:37:19 |         MASTER-SAAO | (18h 03m 17.60s , -58d 02m 28.3s) |   C |    60 | 17.9 |        
   21610 | 2021-02-05 00:38:39 |         MASTER-SAAO | (18h 10m 56.86s , -58d 03m 34.0s) |   C |    60 | 18.1 |        
   21690 | 2021-02-05 00:39:59 |         MASTER-SAAO | (18h 08m 29.00s , -52d 04m 20.4s) |   C |    60 | 17.7 |        
   21769 | 2021-02-05 00:41:19 |         MASTER-SAAO | (18h 32m 31.40s , -56d 04m 30.4s) |   C |    60 | 17.8 |        
   21849 | 2021-02-05 00:42:38 |         MASTER-SAAO | (18h 05m 39.25s , -54d 02m 48.5s) |   C |    60 | 17.9 |        
   21929 | 2021-02-05 00:43:58 |         MASTER-SAAO | (18h 12m 20.73s , -54d 03m 45.5s) |   C |    60 | 17.9 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 3716
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 FERMI GRB 210204B ( Fermi GBM team, GCN 29394) errorbox  19603 sec after notice time and 19610 sec after trigger time at 2021-02-05 00:05:50 UT, with upper limit up to  18.1 mag. The observations began at zenith distance = 75 deg. The sun  altitude  is -38.9 deg. 

The galactic latitude b = -17 deg., longitude l = 339 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1540065

We obtain a following upper limits.  

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

   19640 | 2021-02-05 00:05:50 |         MASTER-SAAO | (18h 03m 24.86s , -58d 03m 48.4s) |   C |    60 | 17.7 |        
   20217 | 2021-02-05 00:15:26 |         MASTER-SAAO | (18h 03m 55.82s , -56d 04m 08.1s) |   C |    60 | 17.8 |        
   20555 | 2021-02-05 00:21:04 |         MASTER-SAAO | (18h 03m 18.65s , -58d 02m 16.0s) |   C |    60 | 17.9 |        
   20635 | 2021-02-05 00:22:24 |         MASTER-SAAO | (18h 10m 58.28s , -58d 03m 18.1s) |   C |    60 | 17.9 |        
   20893 | 2021-02-05 00:26:42 |         MASTER-SAAO | (18h 05m 36.28s , -54d 04m 17.6s) |   C |    60 | 17.7 |        
   21132 | 2021-02-05 00:30:41 |         MASTER-SAAO | (18h 03m 50.26s , -56d 04m 25.2s) |   C |    60 | 17.9 |        
   21211 | 2021-02-05 00:32:00 |         MASTER-SAAO | (18h 11m 05.22s , -56d 04m 25.2s) |   C |    60 | 18.0 |        
   21451 | 2021-02-05 00:36:00 |         MASTER-SAAO | (17h 45m 06.55s , -54d 03m 21.5s) |   C |    60 | 17.8 |        
   21530 | 2021-02-05 00:37:19 |         MASTER-SAAO | (18h 03m 17.60s , -58d 02m 28.3s) |   C |    60 | 17.9 |        
   21610 | 2021-02-05 00:38:39 |         MASTER-SAAO | (18h 10m 56.86s , -58d 03m 34.0s) |   C |    60 | 18.1 |        
   21690 | 2021-02-05 00:39:59 |         MASTER-SAAO | (18h 08m 29.00s , -52d 04m 20.4s) |   C |    60 | 17.7 |        
   21769 | 2021-02-05 00:41:19 |         MASTER-SAAO | (18h 32m 31.40s , -56d 04m 30.4s) |   C |    60 | 17.8 |        
   21849 | 2021-02-05 00:42:38 |         MASTER-SAAO | (18h 05m 39.25s , -54d 02m 48.5s) |   C |    60 | 17.9 |        
   21929 | 2021-02-05 00:43:58 |         MASTER-SAAO | (18h 12m 20.73s , -54d 03m 45.5s) |   C |    60 | 17.9 |        
Filter C is a clear (unfiltred) band. 


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

MASTER, 2002-2024