[vsnet-grb-info 3055] GRB060319: MASTER limit

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  4892
SUBJECT: GRB060319: MASTER  limit
DATE:    06/03/19 06:44:21 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, M.Sinitsin, P.Gritsyk, S.Korobkin

Sternberg Astronomical Institute, Moscow Union 'Optic'
MASTER  robotic system (http://observ.pereplet.ru) responded to GRB060319.0 
(Ziaeepour, et al., GCN 4885 ) by all cameras (unfiltred, 
R-filtred, spectral and high time resolution).

The first unfiltred image was at 2006-03-19 00:58:24.96 UT, 80 s after notice 
time and 162  after the GRB time
The first spectral image was at 2006-03-19 00:58:33 UT, 88 s after
notice time and 170  after the GRB time. There is no OT brighter than 17.7 .
We have aboute 50 unfiltered images.
The limit of sum of first  10 best images is about 19.5 (s/n=3).
The unfiltered image is calibrated relative to USNO A2.0 (0.8 R + 0.2 B).
We do not see any new sources inside XRT position Kennea
et al. (GCN 4886) brighter 19.5 .
We see faint uncatalogizeted object near but outside  XRT position Kennea 
et al. (GCN 4886). The magnitude is about 19.0  at images between 3 - 8 minutes after 
GRB time.

ra = 11 45 31.59
dec= +60  00  26

The reduction is continuing.
The sum JPG-image   available at
http://observ.pereplet.ru/images/GRB060319may-be.jpg  .
This work is supported by RFFI  04-02-16411 grant.
This message can be cited.
Mailto: lipunov at sai.msu.ru