[vsnet-grb-info 27126] Fermi GRB 210102C: Global MASTER-Net observations report

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  29229
SUBJECT: Fermi GRB 210102C: Global MASTER-Net observations report 
DATE:    21/01/03 08:45:09 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov at xray.sai.msu.ru>

V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, F.Balakin, 
V.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva,
D.Kuvshinov,  D. Cheryasov
(Lomonosov Moscow State University, SAI, Physics Department),

R. Podesta, C.Lopez, F. Podesta, C.Francile 
(Observatorio Astronomico Felix Aguilar OAFA),

R. Rebolo, M. Serra 
(The Instituto de Astrofisica de Canarias),

D. Buckley 
(South African Astronomical Observatory),

O.A. Gres, N.M. Budnev, O.Ershova 
(Irkutsk State University, API),

A. Tlatov, D. Dormidontov 
(Kislovodsk Solar Station of the Pulkovo Observatory),

V. Yurkov, A. Gabovich, Yu. Sergienko 
(Blagoveschensk Educational State University)




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 210102C ( S. Poolakkil et al., GCN 29228) errorbox  14713 sec after notice time and 14777 sec after trigger time at 2021-01-03 00:45:31 UT, with upper limit up to  17.7 mag. The observations began at zenith distance = 78 deg. The sun  altitude  is -27.8 deg. 

MASTER-OAFA robotic telescope  located in Argentina (OAFA observatory of San Juan National University) started inspect of the Fermi GRB 210102C errorbox  37485 sec after notice time and 37549 sec after trigger time at 2021-01-03 07:05:03 UT, with upper limit up to  17.4 mag. The observations began at zenith distance = 75 deg. The sun  altitude  is -25.8 deg. 

The galactic latitude b = 14 deg., longitude l = 341 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1517531

We obtain a following upper limits.  

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

   14868 | 2021-01-03 00:45:31 |         MASTER-SAAO | (15h 37m 40.48s , -37d 10m 22.5s) |   C |   180 | 17.5 |        
   15229 | 2021-01-03 00:51:33 |         MASTER-SAAO | (15h 37m 40.65s , -37d 11m 17.2s) |   C |   180 | 17.7 |        
   15508 | 2021-01-03 00:56:12 |         MASTER-SAAO | (15h 37m 43.87s , -37d 11m 02.4s) |   C |   180 | 17.7 |        
   37639 | 2021-01-03 07:05:03 |         MASTER-OAFA | (15h 41m 31.97s , -37d 50m 25.5s) |   C |   180 | 16.9 |        
   38059 | 2021-01-03 07:12:02 |         MASTER-OAFA | (15h 41m 30.60s , -37d 52m 29.2s) |   C |   180 | 17.2 |        
   38563 | 2021-01-03 07:20:27 |         MASTER-OAFA | (15h 41m 33.22s , -37d 52m 25.5s) |   C |   180 | 17.2 |        
   38932 | 2021-01-03 07:27:35 |         MASTER-OAFA | (15h 58m 44.82s , -34d 37m 34.2s) |   C |    60 | 16.9 |        
   39011 | 2021-01-03 07:28:55 |         MASTER-OAFA | (15h 39m 27.24s , -34d 39m 06.6s) |   C |    60 | 17.3 |        
   39091 | 2021-01-03 07:30:14 |         MASTER-OAFA | (15h 56m 09.32s , -32d 37m 35.3s) |   C |    60 | 16.9 |        
   39170 | 2021-01-03 07:31:34 |         MASTER-OAFA | (15h 43m 02.44s , -36d 37m 27.2s) |   C |    60 | 17.2 |        
   39249 | 2021-01-03 07:32:53 |         MASTER-OAFA | (15h 37m 14.21s , -32d 36m 54.4s) |   C |    60 | 17.2 |        
   39329 | 2021-01-03 07:34:12 |         MASTER-OAFA | (16h 02m 42.12s , -36d 39m 25.7s) |   C |    60 | 17.0 |        
   39408 | 2021-01-03 07:35:32 |         MASTER-OAFA | (15h 47m 50.85s , -38d 37m 22.4s) |   C |    60 | 16.9 |        
   39488 | 2021-01-03 07:36:52 |         MASTER-OAFA | (15h 54m 49.80s , -30d 37m 41.3s) |   C |    60 | 16.9 |        
   39886 | 2021-01-03 07:43:30 |         MASTER-OAFA | (15h 58m 45.09s , -34d 38m 17.8s) |   C |    60 | 17.0 |        
   39966 | 2021-01-03 07:44:49 |         MASTER-OAFA | (16h 08m 24.29s , -34d 37m 29.7s) |   C |    60 | 16.8 |        
   40045 | 2021-01-03 07:46:09 |         MASTER-OAFA | (15h 39m 33.51s , -34d 37m 53.1s) |   C |    60 | 17.3 |        
   40124 | 2021-01-03 07:47:28 |         MASTER-OAFA | (15h 49m 07.52s , -34d 39m 05.9s) |   C |    60 | 17.1 |        
   40205 | 2021-01-03 07:48:49 |         MASTER-OAFA | (15h 56m 13.18s , -32d 38m 48.1s) |   C |    60 | 17.1 |        
   40285 | 2021-01-03 07:50:09 |         MASTER-OAFA | (16h 05m 35.69s , -32d 37m 31.1s) |   C |    60 | 16.8 |        
   40365 | 2021-01-03 07:51:29 |         MASTER-OAFA | (15h 42m 59.86s , -36d 38m 48.3s) |   C |    60 | 17.2 |        
   40444 | 2021-01-03 07:52:48 |         MASTER-OAFA | (15h 52m 56.54s , -36d 37m 37.3s) |   C |    60 | 17.1 |        
   40524 | 2021-01-03 07:54:07 |         MASTER-OAFA | (15h 37m 15.85s , -32d 37m 51.2s) |   C |    60 | 17.3 |        
   40603 | 2021-01-03 07:55:27 |         MASTER-OAFA | (15h 46m 40.83s , -32d 37m 04.2s) |   C |    60 | 17.2 |        
   40683 | 2021-01-03 07:56:47 |         MASTER-OAFA | (16h 02m 48.12s , -36d 38m 26.4s) |   C |    60 | 17.1 |        
   40842 | 2021-01-03 07:59:26 |         MASTER-OAFA | (15h 47m 53.41s , -38d 38m 51.7s) |   C |    60 | 17.0 |        
   40928 | 2021-01-03 08:00:52 |         MASTER-OAFA | (15h 57m 59.44s , -38d 37m 42.7s) |   C |    60 | 16.7 |        
   41009 | 2021-01-03 08:02:12 |         MASTER-OAFA | (15h 54m 46.80s , -30d 38m 46.7s) |   C |    60 | 17.0 |        
   41088 | 2021-01-03 08:03:32 |         MASTER-OAFA | (16h 04m 03.97s , -30d 37m 57.6s) |   C |    60 | 16.9 |        
   41406 | 2021-01-03 08:08:50 |         MASTER-OAFA | (15h 33m 02.59s , -36d 38m 51.3s) |   C |    60 | 17.2 |        
   41565 | 2021-01-03 08:11:29 |         MASTER-OAFA | (15h 45m 32.45s , -30d 37m 17.1s) |   C |    60 | 17.3 |        
   41803 | 2021-01-03 08:15:27 |         MASTER-OAFA | (15h 58m 44.22s , -34d 38m 25.6s) |   C |    60 | 17.2 |        
   41883 | 2021-01-03 08:16:47 |         MASTER-OAFA | (16h 08m 22.62s , -34d 37m 38.5s) |   C |    60 | 17.0 |        
   41964 | 2021-01-03 08:18:08 |         MASTER-OAFA | (15h 39m 33.08s , -34d 37m 59.5s) |   C |    60 | 17.4 |        
   42044 | 2021-01-03 08:19:28 |         MASTER-OAFA | (15h 49m 05.56s , -34d 39m 13.0s) |   C |    60 | 17.2 |        
   42123 | 2021-01-03 08:20:47 |         MASTER-OAFA | (15h 56m 11.34s , -32d 39m 21.9s) |   C |    60 | 17.0 |        
   42202 | 2021-01-03 08:22:06 |         MASTER-OAFA | (16h 05m 34.89s , -32d 37m 49.7s) |   C |    60 | 16.8 |        
   42282 | 2021-01-03 08:23:26 |         MASTER-OAFA | (15h 42m 58.96s , -36d 39m 00.0s) |   C |    60 | 17.1 |        
   42361 | 2021-01-03 08:24:45 |         MASTER-OAFA | (15h 52m 54.79s , -36d 37m 30.0s) |   C |    60 | 16.9 |        
   42440 | 2021-01-03 08:26:04 |         MASTER-OAFA | (15h 37m 14.12s , -32d 37m 56.0s) |   C |    60 | 17.2 |        
   42520 | 2021-01-03 08:27:24 |         MASTER-OAFA | (15h 46m 40.09s , -32d 37m 09.0s) |   C |    60 | 16.9 |        
   42600 | 2021-01-03 08:28:43 |         MASTER-OAFA | (16h 02m 47.44s , -36d 38m 32.4s) |   C |    60 | 16.9 |        
   42679 | 2021-01-03 08:30:03 |         MASTER-OAFA | (16h 12m 34.07s , -36d 39m 45.9s) |   C |    60 | 16.7 |        
Filter C is a clear (unfiltred) band. 


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