Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 7005

GRB 071025: SARA VRI upper limits
2007-10-26T02:59:27Z (17 years ago)
Adria C. Updike at Clemson U <>
Adria C. Updike, Dieter H. Hartmann (Clemson University), Evan Bryson,
Matt Cefalu, and Todd Hillwig (Valparaiso University) report on behalf
of the Clemson GRB Follow-Up Team:

We observed the field of GRB 071025 (GCN 6986, Pagani et al.) with the
0.9m SARA telescope on Kitt Peak beginning 49 minutes after the
trigger.  Our observations consisted of R, V, and I band exposures under
good weather conditions.  We do not detect the afterglow (GCN 6987,
Rykoff et al.) in any of our stacked images.

Times are given in days after the trigger.  R and I magnitudes were
determined based on calibration to 10 USNO B1.0 field stars.  V
magnitudes were found relative to 5 NOMAD field stars.

Start time       End time      Exp                  Mag
0.03394         0.04328      4x180s               R > 18.6
0.04405         0.05559      2x180s + 2x240s      V > 19.1
0.05586         0.10521      10x240s              I > 19.3

The SARA website may be found at

This message may be cited.
Looking for U.S. government information and services? Visit