TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  4330
SUBJECT: GRB 051210: Magellan Imaging
DATE:    05/12/12 00:42:27 GMT
FROM:    Josh Bloom at UC Berkeley  <jbloom@astron.berkeley.edu>

J. S. Bloom (UC Berkeley), M. Modjaz (CfA/Harvard), P. Challis
(CfA/Harvard), R. P. Kirshner (CfA/Harvard), W.-W. Chen (Chicago),
J. X. Prochaska (UCO/Lick) report:

Starting 11 Dec 2005 01:10:41 UTC, we observed the field of the short
burst GRB 051210 (Mangano et al. 4315, 4320; Sato et al. 4318) with
the 6.5m Clay/Magellan using the LDSS3 instrument (*). In a stack of
2x10min exposures in r'-band, we find one clearly detected source
consistent the revised (GCN 4320) error circle. The J2000 coordinates
of this source is:

    RA    = 22:00:40.93
    DEC = -57:36:47.1

We make no claim of variability at this time, and note that the
source appears somewhat extended (north by north east). In addition
there appears to be a marginally detected source at (end figures) 41.41,
47.0. Follow-up is encouraged."

A finding chart may be found at:
   http://astro.berkeley.edu/~jbloom/grb051210_find.pdf
(red diamonds are USNO B1.0 positions)

This message may be cited.
(*) http://www.ociw.edu/lco/magellan/instruments/LDSS3/