[vsnet-grb-info 28295] Integral GRB210707.02: Global MASTER-Net observations report

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  30398
SUBJECT: Integral GRB210707.02: Global MASTER-Net observations report 
DATE:    21/07/07 00:57:09 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) was pointed to the Integral GRB210707.02 (trigger No 9295,19h 34m 53.86s , +21d 53m 33.3s, R=0.0521667) errorbox 22 sec after trigger time at 2021-07-07 00:33:55 UT, with upper limit up to  19.3 mag. The observations began at zenith distance = 57 deg. The sun  altitude  is -63.9 deg. 

MASTER-Kislovodsk robotic telescope  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) was pointed to the Integral GRB210707.02 errorbox 56 sec after trigger time at 2021-07-07 00:34:29 UT, with upper limit up to  15.2 mag. Observations started at twilight.  The observations began at zenith distance = 40 deg. The sun  altitude  is -10.0 deg. 

MASTER-IAC robotic telescope  located in Spain (IAC Teide Observatory) was pointed to the Integral GRB210707.02 errorbox 57 sec after trigger time at 2021-07-07 00:34:29 UT, with upper limit up to  18.0 mag. The observations began at zenith distance = 15 deg. The sun  altitude  is -38.8 deg. 

The galactic latitude b =  0 deg., longitude l = 58 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1654824

We obtain a following upper limits.  

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

      28 |         MASTER-SAAO | P\  |    10 | 17.4 |        
      38 |         MASTER-SAAO | P\  |    30 | 18.1 |  Coadd 
      49 |         MASTER-SAAO | P\  |    10 | 17.5 |        
      62 |   MASTER-Kislovodsk |  P| |    10 | 13.2 |        
      62 |          MASTER-IAC |  P| |    10 | 16.8 |        
      62 |          MASTER-IAC |  P- |    10 | 16.6 |        
      71 |         MASTER-SAAO | P\  |    10 | 17.5 |        
      89 |          MASTER-IAC |  P| |    20 | 17.4 |        
      89 |          MASTER-IAC |  P- |    20 | 17.1 |        
      98 |   MASTER-Kislovodsk |  P| |    20 | 13.1 |        
      99 |         MASTER-SAAO | P\  |    20 | 18.0 |        
     124 |         MASTER-SAAO | P\  |    70 | 18.7 |  Coadd 
     121 |          MASTER-IAC |  P| |    20 | 17.3 |        
     121 |          MASTER-IAC |  P- |    20 | 17.1 |        
     131 |         MASTER-SAAO | P\  |    20 | 18.0 |        
     143 |   MASTER-Kislovodsk |  P| |    30 | 12.9 |        
     156 |          MASTER-IAC |  P| |    30 | 17.7 |        
     156 |          MASTER-IAC |  P- |    30 | 17.5 |        
     168 |         MASTER-SAAO | P\  |    30 | 18.2 |        
     198 |   MASTER-Kislovodsk |  P| |    40 | 14.6 |        
     201 |          MASTER-IAC |  P| |    40 | 17.9 |        
     201 |          MASTER-IAC |  P- |    40 | 17.6 |        
     216 |         MASTER-SAAO | P\  |    40 | 17.5 |        
     271 |         MASTER-SAAO | P\  |   150 | 18.9 |  Coadd 
     261 |          MASTER-IAC |  P| |    50 | 18.0 |        
     262 |   MASTER-Kislovodsk |  P| |    50 | 13.7 |        
     273 |         MASTER-SAAO | P\  |    50 | 18.6 |        
     337 |   MASTER-Kislovodsk |  P| |    60 | 14.9 |        
     341 |         MASTER-SAAO | P\  |    60 | 18.6 |        
     423 |         MASTER-SAAO | P\  |    80 | 18.3 |        
     533 |         MASTER-SAAO | P\  |   300 | 19.3 |  Coadd 
     427 |   MASTER-Kislovodsk |  P| |    80 | 14.6 |        
     525 |         MASTER-SAAO | P\  |   100 | 18.8 |        
     537 |   MASTER-Kislovodsk |  P| |   100 | 15.2 |        
     648 |         MASTER-SAAO | P\  |   120 | 18.8 |        
     666 |   MASTER-Kislovodsk |  P| |   120 | 13.9 |        
     790 |         MASTER-SAAO | P\  |   140 | 19.0 |        
     821 |   MASTER-Kislovodsk |  P| |   150 | 13.9 |        
     957 |         MASTER-SAAO | P\  |   170 | 18.7 |        


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