GCN Circular 29589
Subject
Fermi trigger No 636187116: Global MASTER-Net observations report
Date
2021-02-28T18:00:37Z (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-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 GRB210228.28 (trigger No 636187116,06h 06m 28.80s , -41d 17m 24.0s, R=1) errorbox 34607 sec after notice time and 40338 sec after trigger time at 2021-02-28 17:50:49 UT, with upper limit up to 16.9 mag. Observations started at twilight. The observations began at zenith distance = 12 deg. The sun altitude is -8.3 deg.
The galactic latitude b = -25 deg., longitude l = 248 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=1557721
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
40369 | 2021-02-28 17:50:49 | MASTER-SAAO | (06h 01m 25.31s , -43d 08m 17.8s) | C | 60 | 16.3 |
40449 | 2021-02-28 17:52:09 | MASTER-SAAO | (06h 11m 27.87s , -41d 09m 11.1s) | C | 60 | 16.8 |
40608 | 2021-02-28 17:54:49 | MASTER-SAAO | (06h 01m 07.25s , -39d 08m 08.8s) | C | 60 | 16.9 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.