GCN Circular 502
Subject
GRB 991217 (SAX J2303.2+0015) Optical observations
Date
1999-12-20T13:18:19Z (24 years ago)
From
Javier Gorosabel at LAEFF-INTA, Madrid <jgu@laeff.esa.es>
Vijay Mohan, Ram Sagar, Anil K. Pandey, S.B. Pandey (from UPSO,
Nainital), Javier Gorosabel and Alberto J. Castro-Tirado (LAEFF-INTA,
Madrid and IAA-CSIC, Granada) -on behalf of a larger European
collaboration- report:
"We have obtained several images of the BeppoSAX WFC error box for SAX
J2303.2+0015 (also referred to as GRB 991217) as reported by Muller,
et. al. (GCN 474) with the 2k x 2k CCD camera mounted at the f/13 Cass
focus of the UPSO 104-cm Sampurnanand telescope on 1999 Dec 17.63, Dec
18.65 and Dec 19.55 in R photometric passband during photometric sky
conditions. The corresponding exposure times are 120, 60 and 60 minutes
respectively. Our field of view was 780 x 780 arc seconds. After a visual
comparison of our images with digital sky survey, though we detect several
faint objects yet no object varying like an OT of a gamma-ray burst was
detected. Our images go as faint as R = 22.0 magnitude. This indicates that
the OT of this GRB if any is fainter than 22nd magnitude in R.
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