Skip to main content
Announcing GCN Classic Migration Survey, End of Legacy Circulars Email. See news and announcements

GCN Circular 1198

Subject
GRB011212, BVRI field photometry
Date
2001-12-13T17:38:52Z (23 years ago)
From
Arne A. Henden at USNO/USRA <aah@nofs.navy.mil>
A. Henden (USRA/USNO) reports on behalf of the USNO GRB team:

We have acquired BVRcIc all-sky photometry for
an 11x11 arcmin field that is approximately centered on
the joint HETE/RXTE_ASM error box for GRB011212 (GCN 1194+alert)
with the USNOFS 1.0-m telescope on one photometric
(but poor seeing) night.  Stars brighter than
V=13.5 are saturated and should be used with care.
We have placed the photometric data on our anonymous ftp site:
ftp://ftp.nofs.navy.mil/pub/outgoing/aah/grb/grb011212.dat
The current photometry has a potential external zero-point
error of about two percent.  The astrometry in this file
is based on linear plate solutions with respect to USNO-A2.0.
The internal errors are less than 100mas.

Further calibration of this field will be performed if
an optical transient is discovered.
Looking for U.S. government information and services? Visit USA.gov