Skip to main content
Introducing Einstein Probe, Astro Flavored Markdown, and Notices Schema v4.0.0. See news and announcements

GCN Circular 742

GRB000630, BVRI Field Photometry
2000-07-02T00:32:26Z (24 years ago)
Arne A. Henden at USNO/USRA <>
A. Henden (USRA/USNO) reports on behalf of the USNO GRB team:

We have acquired preliminary BVRcIc all-sky photometry for
an 11x11 arcmin field that covers the northern 60 percent of the
error box for GRB000630 with the USNOFS 1.0-m telescope on one
marginally photometric night.  Stars brighter than
V=14 are saturated and should be used with care.
We have placed the photometric data on our anonymous ftp site:
The current photometry has a potential external zero-point
error of about three 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 afterglow is identified.
Looking for U.S. government information and services? Visit