[vsnet-grb-info 7033] GRB 081203A: Skynet/GORT Detections

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  8617
SUBJECT: GRB 081203A: Skynet/GORT Detections
DATE:    08/12/05 01:15:13 GMT
FROM:    James Philip West at UNC/Chapel Hill  <jpwest at uncg.edu>

J. P. West, K. McLin, T. Brennan, J. Haislip, D. Reichart, L. Cominsky, T.
Graves, G. Spear, K. Ivarsen, J. A. Crain, A. Foster, R. Holmes, A.
LaCluyze, M. Schubel, J. Styblova, A. Trotter, and E. Weaver report:

Skynet observed the localization of GRB 081203A (Parsons et al., GCN 8595)
with the 14" GORT telescope at Hume Observatory in California beginning 122
seconds after the trigger (101 seconds after notification) in RI.

Only five exposures were taken before morning twilight.  We detect the
afterglow (Parsons et al., GCN 8595) in all five exposures.  Calibrated to
five USNO B1 stars, we find:

mean time
since trigger   exposure        filter          magnitude time
(sec)           (sec)

134             20              I               12.79 +/- 0.02
235             40              R               12.60 +/- 0.01
345             40              I               11.58 +/- 0.01
476             80              R               12.51 +/- 0.01
625             80              I               12.02 +/- 0.01