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GCN Circular 30938

Subject
Integral GRB211016.42: Global MASTER-Net observations report
Date
2021-10-16T16:57:27Z (3 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@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-Kislovodsk robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) was pointed to the Integral GRB211016.42 (trigger No 74982,18h 08m 31.75s , -20d 24m 02.2s, R=0.0531) errorbox  19402 sec after notice time and 19424 sec after trigger time at 2021-10-16 15:23:53 UT, with upper limit up to  16.8 mag. Observations started at twilight.  The observations began at zenith distance = 68 deg. The sun  altitude  is -11.2 deg. 

The galactic latitude b = -1 deg., longitude l = 10 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1753784

We obtain a following upper limits.  

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

    3945 |             MASTER- |   C |     1 | 13.4 |        
    3965 |             MASTER- |   C |     1 | 13.5 |        
    3985 |             MASTER- |   C |     1 | 13.3 |        
    4006 |             MASTER- |   C |     1 | 13.5 |        
    4021 |             MASTER- |   C |     1 | 13.5 |        
    4502 |             MASTER- |   C |     1 | 13.8 |        
    4613 |             MASTER- |   C |     1 | 14.0 |        
    4634 |             MASTER- |   C |     1 | 14.0 |        
    4762 |             MASTER- |   C |     1 | 14.1 |        
    4779 |             MASTER- |   C |     1 | 14.1 |        
    4795 |             MASTER- |   C |     1 | 14.0 |        
    5289 |             MASTER- |   C |     1 | 14.3 |        
    5435 |             MASTER- |   C |     1 | 14.3 |        
    5455 |             MASTER- |   C |     1 | 14.0 |        
    5940 |             MASTER- |   C |     1 | 14.6 |        
    9719 |             MASTER- |   C |    20 | 12.6 |        
   19514 |   MASTER-Kislovodsk |   C |   180 | 13.1 |        
   19514 |   MASTER-Kislovodsk |   C |   180 | 15.4 |        
   19715 |   MASTER-Kislovodsk |   C |   180 | 15.9 |        
   19715 |   MASTER-Kislovodsk |   C |   180 | 16.8 |        
   20156 |   MASTER-Kislovodsk |   C |   180 | 15.4 |        
   20156 |   MASTER-Kislovodsk |   C |   180 | 16.3 |        
   20517 |   MASTER-Kislovodsk |   C |   180 | 13.7 |        
   23281 |   MASTER-Kislovodsk |   C |   180 | 15.4 |        
Filter C is a clear (unfiltred) band. 


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