GCN Circular 29962
Subject
Integral GRB210507.04: Global MASTER-Net observations report
Date
2021-05-07T18:19:24Z (4 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-Tavrida robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, SAI Crimea astronomical station) was pointed to the Integral GRB210507.04 (trigger No 9195,08h 39m 48.00s , +20d 20m 42.0s, R=0.001) errorbox 48291 sec after notice time and 61613 sec after trigger time at 2021-05-07 17:58:59 UT, with upper limit up to 16.3 mag. Observations started at twilight. The observations began at zenith distance = 40 deg. The sun altitude is -11.0 deg.
The galactic latitude b = 33 deg., longitude l = 206 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=1608499
We obtain a following upper limits.
Tmid-T0 | Site |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________
61704 | MASTER-Tavrida | C | 180 | 15.9 |
62103 | MASTER-Tavrida | C | 180 | 16.3 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.