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GCN Circular 4844

GRB060223b: optical limit
2006-02-28T10:55:47Z (18 years ago)
Alexei Pozanenko at IKI, Moscow <>
M. Andreev (Institute of Astronomy), A. Pozanenko  (IKI)  on behalf of
larger GRB follow up collaboration report:

We observed the field of GRB060223b (Cummings et al. GCN 4821)  in V-band
with the 60 cm telescope of  peak Terskol observatory on Feb. 24 between
(UT) 02:24-02:41.   No new source is detected in comparison of combined
image (18x60 s)  with DSS2(R) at the refined XRT position (Perri et al. GCN
4835) and in a larger refined BAT position (Fenimore et al. GCN 4825).

The limiting magnitude is determined in comparison with USNO A2.0 (R):

Mid  time,      exp.,  mag.(UL)
(UT)            (s)

Feb. 24 02:33  18x60   19.0
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