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GCN Circular 3869

GRB050824: MASTER observation OT
2005-08-25T02:29:00Z (19 years ago)
Vladimir Lipunov at Moscow State U/Krylov Obs <>
Corrected subject to GCN3868.

V. Lipunov,  V.Kornilov,   N.Tyurina, A.Belinski,
E.Gorbovskoy, D.Kuvshinov,  A.Krylov, G.Borisov, V.Vladimirov, Krushinski V.

Sternberg Astronomical Institute, Moscow Union "Optic"

       MASTER ( responded to GRB 050824 (Swift trigger 
151905). The first image  was 764 sec after
SWIFT  GRB050824 detection    under the
     not very good weather condition (Moon light).
  We see OT J. Gorosabel (GCN 3865) with m =  17.5 (unfiltered close to R, 
exp.  45 sec) on 2-3 sigma level. On summ of 9 
images from 19.5 up to 28.5 minut after GRB Time (23 12 16.00 UT) m= 18.0 on 5 

      UT                 After GRB time          m
     23 25 00               764s               17.9
     23 31 44        19.5min - 28.5 min        18.3
     23 31 44        19.5min - 37.75 min       18.8

The JPG-image of the summ   will be  available at  .

The reduction is continuing.
This work is supported by RFFI  04-02-16411 grant.
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