[vsnet-grb-info 8930] GRB 100213A: GRT Optical Observation
GCN Circulars
gcncirc at capella.gsfc.nasa.gov
Tue Feb 16 05:30:02 JST 2010
TITLE: GCN CIRCULAR
NUMBER: 10425
SUBJECT: GRB 100213A: GRT Optical Observation
DATE: 10/02/15 20:29:56 GMT
FROM: Takanori Sakamoto at NASA/GSFC <takanori at milkyway.gsfc.nasa.gov>
T. Sakamoto (UMBC/GSFC), D. Donato (ORAU/GSFC), N. Gehrels (GSFC),
T. Okajima (JHU/GSFC), Y. Urata (NCU), C.A. Wallace (FGCU)
We observed the field of GRB 100213A detected by Swift
(trigger #412217; Grupe et al., GCN Circ. 10411) with the 14-inch
Goddard Robotic Telescope (GRT) located at the Goddard Geophysical
and Astronomical Observatory (http://cddisa.gsfc.nasa.gov/ggao/).
Total 49 images of 60 sec exposures were taken in the R filter
starting from February 13 23:42:02 (UT) about 1.2 hours after
the trigger and stopped on February 14 01:28:00 (UT). We do
not detect the optical afterglow both in the individual images
and the combined image inside the XRT position
(Beardmore et al., GCN #10418). The estimated three sigma upper
limit of the combined image (total exposure of 1800 sec; excluding
bad quality images) is ~17.5 mag using the USNO-B1 catalog.
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