[vsnet-grb-info 613] GRB 021201, optical observations

[GCN Circulars <gcncirc@lheawww.gsfc.nasa.gov>]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  1746
SUBJECT: GRB 021201, optical observations
DATE:    02/12/13 04:25:28 GMT
FROM:    Peter Garnavich at U of Notre Dame  <pgarnavi@miranda.phys.nd.edu>

P. Garnavich and J. Quinn (University of Notre Dame)

We observed the entire error box of the GRB 021201 burst
(GCN 1719) with the NOAO WIYN telescope on 2002 Dec. 5.5 (UT).
The 3x600s R-band images were taken in 1.2" seeing. We confirm
the presence of a bright optical source near the Chandra x-ray
source #10 (GCN 1741) identified by Castro Cerón et al. (GCN 1743).
The optical source is USNO-A2.0 1050.05586294 listed
in the catalog at 08:07:49.350 +21:12:33.66 (J2000) and
R=18.9. We estimate the brightness at R=20.4 using a zero
point from a nearby Landolt standard star field. To search
for fainter objects, we subtracted a PSF scaled to the
peak of the USNO star and found no other sources brighter
than R=23.3 within 4" of the Chandra #10 x-ray position.

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