[vsnet-grb-info 2242] GRB051008: optical observation

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  4081
SUBJECT: GRB051008: optical observation
DATE:    05/10/10 23:03:53 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen at iki.rssi.ru>

V.Rumyantsev (CrAO), V.Biryukov (SAI, MSU), and A.Pozanenko (IKI) on behalf
of larger GRB follow up collaboration report:

We have observed the GRB051008 error box (Marshall et al., GCN4069) with 2.6
m Shajn telescope of CrAO. The observation start on Oct. 8, 17:05:08 (UT),
i.e 38 minutes after the burst onset.  We found an optical source  within
XRT  error circle (Perri et al., GCN4073) which is not present in DSS2 (R):

RA(J2000) =13 31 29.98
Dec       =+42 05 52.06

Preliminary photometry against of USNO A2.0 is  R=21.4+-0.1.

Finding chart of the optical source can be found at
http://grb.rssi.ru/GRB051008/GRB051008_ZTSh_R.gif

More detailed analysis and observations are in progress.
No optical source is detected in the place of radio source (Cameron et al.,
GCN4074).

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