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 4173

GRB051028:MASTER observations
2005-10-28T21:29:54Z (19 years ago)
Vladimir Lipunov at Moscow State U/Krylov Obs <>
V. Lipunov, V.Kornilov, D.Kuvshinov, N.Tyurina, A.Belinski, E.Gorbovskoy,
A.Krylov, G.Borisov, A.Sankovich, G. Antipov, V.Vladimirov

Sternberg Astronomical Institute, Moscow Union 'Optic'
MASTER  robotic system ( responded to
HETE GRB051028.6 (GCN 4172).
An automated response took  first image 2005-10-28 16:59:56 UT,
03h 23 m  after the GRB time (GCN4171).
The unfiltered image is calibrated relative to USNO A2.0 (0.8 R + 0.2 B).
We  not find OT-candidate in error box brighter then  17.9 on the 
summ of  9 images between 17 32 40 - 18 03 03 UT.
Mean time is 17 48 09 ( 4 h 12 min after GRB Time).

The JPG-image of the summ   will be  available at  (In error circ you can 
see candidates which we recognised with 2MASS ).
The reduction is continuing.
This work is supported by RFFI  04-02-16411 grant.
This message can be cited.
Looking for U.S. government information and services? Visit