GCN Circular 2524
Subject
GRB031111, optical observations
Date
2004-02-03T22:16:37Z (21 years ago)
From
Adalberto Piccioni at Astronomy, Bologna U. <piccioni@ermione.bo.astro.it>
A.Piccioni, C.Bartolini, A.Guarnieri (Bologna University),
P.Ferrero and G.Pizzichini,(IASF-CNR, Sezione di Bologna)
and J. Casares (IAC, Tenerife) report:
During the nights Nov 13, 14 and 15, 2003 we observed the error box
of GRB031111 (Hete burst H2925, Hurley et al., GCN #2443) in R band
with the 1m ESA OGS telescope (operated on the island of Tenerife by
Instituto de Astrofisica de Canarias at the Observatorio del Teide),
and the IAC CCD camera.
The initial HETE-WXM field was divided in 9 overlapping subfields.
With the exception of about 7% of the area at the corners, the full
final HETE-IPN error box was observed.
The images intersecting the error box were selected, and we obtained:
13 images x 600 sec on Nov. 13.14 UT (mean epoch)
12 images x 600 sec on Nov. 14.16 UT (mean epoch)
5 images x 600 sec on Nov. 15.04 UT (mean epoch)
Our coadded images of subsequent nights attained just the limit of
POSS-II, and by comparison we can state that no new object is present.
Within the same limit and on a time scale of 3 days we do not detect
any variable object with amplitude > 0.3 mag.
A few selected images, the observation log and a short comment are
available in our public account; the coordinates to login (only by ssh
or sftp) are:
hostname ermione.bo.astro.it
username publicGRB
password GRB_bo
directory GRB031111
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