Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 3883

GRB050824: MASTER final analysis of the OT observations
2005-08-25T20:26:17Z (19 years ago)
Vladimir Lipunov at Moscow State U/Krylov Obs <>
V. Lipunov,  V.Kornilov, A.Krylov,  N.Tyurina, A.Belinski,
E.Gorbovskoy, D.Kuvshinov,  G.Borisov, V.Vladimirov, G.Antipov, Krushinski V.

Sternberg Astronomical Institute, Moscow Union "Optic"

       MASTER ( responded to GRB 050824 (Swift trigger 
151905) (see GCN3869). The first image  was 764 sec after
SWIFT  GRB050824 detection    under the   Moon light.
  We see OT-candidate  proposed by J. Gorosabel (GCN 3865).
Our m = 0.89R + 0.11B (R & B from USNO A2).
We made new reduction and confirm previous our OT-decay result (GCN3870):
New reduction give next results about OT:

        UT               After GRB      m        error     expotime
                         mean time

     23 25 00               788s      >17.8                   45  s
23 25 00 - 23 47 55       24.0 min    18.6       +-0.3      15x30 s 
23 49 00 - 00 09 35       47.0 min    19.4       +-0.3      15x30 s

The JPG-images    available at  .

This work is supported by RFFI  04-02-16411 grant.
This message can be cited.
Looking for U.S. government information and services? Visit