GCN Circular 9941
Subject
GRB 090926B: NOT optical observation
Event
Date
2009-09-27T05:05:31Z (17 years ago)
From
Dong Xu at DARK,NBI <dong@astro.ku.dk>
D. Xu, D. Malesani (DARK/NBI), S. Barros (Queen Univ., Belfast), P.
Jakobsson (Univ. Iceland), report on behalf of a larger collaboration.
We observed the field of GRB 090926B (Grupe et al., GCN 9935) with the
NOT equipped with ALFOSC. Observations were carried out in the R and I
bands, at high airmass (~2.5), starting on 2009 Sep 27.122 UT (4.99 hr
after the GRB) and 27.146 UT (5.58 hr after the GRB), respectively.
No source is visible inside the enhanced X-ray error circle (Grupe et
al., GCN 9940; http://www.swift.ac.uk/xrt_positions), down to a limiting
magnitude R ~ 23 based on USNO-B1 stars in the field.