GCN Circular 10657
Subject
Swift Trigger 420256: IAC80 R-band observations
Date
2010-04-23T07:22:05Z (15 years ago)
From
Javier Gorosabel at IAA-CSIC <jgu@iaa.es>
J. Gorosabel (IAA-CSIC), C. Zurita (IAC), A. de Ugarte Postigo (INAF-
OAB), on behalf of a larger collaboration report:
"We have observed the field of Swift trigger 420256 (Hoversten et al.,
GCNC 10654) with the 80-cm IAC80 telescope on the observatory of
Teide, Tenerife, Spain. The observations were conducted in the R-band
on April 23.1453-23.1906 UT (0.75-1.84 hours post burst) with a total
exposure time of 3000s.
Visual comparison to the DSS reveals no new sources in the co-added
image within the Swift/BAT error circle brighter than R=19 (USNO-B1.0
calibration)."