[vsnet-grb-info 3185] GRB060427:MASTER optical limit

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  5020
SUBJECT: GRB060427:MASTER optical limit
DATE:    06/04/28 13:03:32 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <gcncirc at observ.inetcomm.ru>

V. Lipunov, V.Kornilov, D.Kuvshinov, N.Tyurina, A.Belinski, E.Gorbovskoy,
A.Krylov, G.Borisov, A.Sankovich, N.Shatskiy, V.Vladimirov
S.Korobkin, P.Gritsyk

Sternberg Astronomical Institute, Moscow Union 'Optic'
MASTER  robotic system (http://observ.pereplet.ru) responded to 
GRB060427.4 (GRB_TIME is 2006-04-27 09:04:33.53, V. Mangano, S. D. 
Barthelmy et al.(GCN5006).
The first image was at 2006-04-27 18:18:07 UT, 09:13:33.47  after the GRB time
The unfiltered image is calibrated relative to USNO A2.0 (0.8 R + 0.2 B).
The robot not find OT-candidate in error box (V. Mangano et al. GCN5010) 
brighter then  17.5 (s/n=3).
This work is supported by RFFI  04-02-16411 grant.
This message can be cited.
Mailto: lipunov at sai.msu.ru