TITLE: GCN CIRCULAR NUMBER: 41373 SUBJECT: Swift GRB250814.32: Global MASTER-Net observations report DATE: 25/08/14 16:14:43 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs lipunov@xray.sai.msu.ru
V.Lipunov, E.Gorbovskoy, A.Kuznetsov, K.Zhirkov, I.Panchenko, N.Tiurina, P.Balanutsa, V.Topolev, D.Vlasenko, G.Antipov, A.Sankovich, Yu.Tselik, Ya.Kechin, V.Senik, A.Chasovnikov, K.Labsina, I. Gorbunov (Lomonosov MSU), O.Gress, N.Budnev (ISU), C.Francile, F. Podesta, R.Podesta, E. Gonzalez (Observatorio Astronomico Felix Aguilar (OAFA), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), A.Sosnovskij (CrAO), A. Gabovich, V.Yurkov (Blagoveschensk Educational StateUniversity), D.Buckley (SAAO), R.Rebolo (The Instituto de Astrofisica de Canarias), L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory)
MASTER-Tunka robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Applied Physics Institute, Irkutsk State University) was pointed to the Swift GRB250814.32 (trigger No 1342439,20h 25m 18.96s , +48d 23m 27.6s, R=0.05) errorbox 28681 sec after notice time and 28770 sec after trigger time at 2025-08-14 15:34:30 UT, with upper limit up to 16.4 mag. The observations began at zenith distance = 6 deg. The sun altitude is -21.4 deg.
The galactic latitude b = 6 deg., longitude l = 85 deg.
Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2968157
We obtain a following upper limits.
Tmid-T0 | Site |Filt.| Expt. | Limit| Comment _________|_____________________|_____|_______|______|________
28860 | MASTER-Tunka | C | 180 | 16.4 | 28860 | MASTER- | C | 180 | 16.3 | Filter C is a clear (unfiltred) band.
The observation and reduction will continue. The message may be cited.
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