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GCN Circular 6482

Subject
GRB070521: optical observation
Date
2007-06-02T16:32:24Z (18 years ago)
From
Vasilij Rumjantsev at CrAO <rum@crao.crimea.ua>
V. Rumyantsev (CrAO),  V. Biryukov (CrAO, SAI MSU),  A. Pozanenko (IKI) on
behalf of larger GRB follow up collaboration report:

We observed error box of GRB070521 (Guidorzi et al., GCN 6431) with
1-m Zeiss (Simeiz) telescope of CrAO in R-band on May 21 between (UT)
20:38 and 21:00. No object is found in a refined XRT error box
(Guidorzi et al., GCN 6452). Limiting magnitude of combined a image is
based on USNO A2.0:

Mid time (UT),  Exposure,   R_Lim (3sigma), Telescope,  Seeing

May 21.868    20x60         22.4             1-m Ziess   2.3"

This message may be cited.

[GCN OPS NOTE(02jun07): The binary attachment was removed as well as the
diagnostics from MIMEDefang reacting to that binary.]
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