GCN Circular 27789
Subject
Swift GRB 200522A: Global MASTER-Net observations report
Date
2020-05-23T07:06:17Z (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),
H.Levato
(Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE),
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 Swift GRB 200522A ( P. A. Evans et al., GCN 27778) errorbox 52336 sec after notice time and 52358 sec after trigger time at 2020-05-23 02:14:12 UT, with upper limit up to 19.7 mag. The observations began at zenith distance = 73 deg. The sun altitude is -40.2 deg.
The galactic latitude b = -62 deg., longitude l = 109 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=1363025
We obtain a following upper limits.
Tmid-T0 | Site |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________
52448 | MASTER-SAAO | C | 180 | 17.1 |
52448 | MASTER-SAAO | C | 180 | 17.4 |
53065 | MASTER-SAAO | C | 180 | 16.4 |
53065 | MASTER-SAAO | C | 180 | 17.3 |
53265 | MASTER-SAAO | C | 180 | 16.4 |
53265 | MASTER-SAAO | C | 180 | 16.9 |
55058 | MASTER-SAAO | C | 60 | 19.3 |
55138 | MASTER-SAAO | C | 60 | 19.3 |
55278 | MASTER-SAAO | C | 180 | 19.7 |
55697 | MASTER-SAAO | C | 60 | 19.1 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.