[vsnet-grb-info 5216] GRB071010B, BVRcIc field calibration
GCN Circulars
gcncirc at capella.gsfc.nasa.gov
Sun Oct 14 00:46:51 JST 2007
TITLE: GCN CIRCULAR
NUMBER: 6909
SUBJECT: GRB071010B, BVRcIc field calibration
DATE: 07/10/13 15:46:46 GMT
FROM: Arne A. Henden at AAVSO <arne at aavso.org>
A. Henden (AAVSO) reports:
While the field of GRB071010B has been observed by SDSS, we have also
obtained a two-night BVRcIc field calibration using the 35cm robotic
telescope at Sonoita Research Observatory. The calibration file
has a limiting magnitude around V=18, with good standards brighter
than V=16 or so. The file is available at
ftp://ftp.aavso.org/public/calib/grb/grb071010b.dat
This calibration is based on numerous Landolt standards, and has
an external zeropoint error of about 0.02mag. We do not expect
at this time to extend this calibration to fainter magnitudes.
The AAVSO thanks the Curry Foundation for their continued support of the
AAVSO International High Energy Network.
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