GCN Circular 6445
Subject
GRB 070521: SARA upper limit
Event
Date
2007-05-22T00:21:31Z (19 years ago)
From
Adria C. Updike at Clemson U <aupdike@clemson.edu>
A. C. Updike, J. R. Puls, and D. H. Hartmann (Clemson University) report
on behalf of the Clemson GRB Follow-Up Team:
We imaged the field of GRB 070521 (GCN 6431, Guidorzi et al.) beginning
14 minutes after the trigger (279935) with the SARA 0.9m at Kitt Peak
under decent weather conditions. In 50 minutes of stacked exposures in
the R band, we detect no new sources in the XRT error circle down to a
limiting magnitude of 20 +/- 0.4. We do not detect the source noted by
Hattori et al. (GCN 6444). This magnitude is based on calibration to 5
USNO B1.0 stars.
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http://saraobservatory.org
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