GCN Circular 12382
Subject
GRB 110918A: Liverpool Telescope optical observations
Event
Date
2011-09-21T22:18:29Z (14 years ago)
From
Drejc Kopac at Math Phys U,Slovenia <drejc.kopac@fmf.uni-lj.si>
C. Guidorzi (U. Ferrara), D. Kopac (U. Ljubljana) and N. R. Tanvir (U.
Leicester), on behalf of a large collaboration report:
We observed the optical afterglow of GRB 110918A (Cenko et al., GCN 12367)
with the 2-m Liverpool Telescope, starting at 01:07 UT on 2011 September
21. We took 6 images in R band with exposure time 300s and we clearly
detect the optical afterglow. Our preliminary photometry yields:
Mid time from Exp Filter Magnitude
trigger (days) (sec)
-------------------------------------------
2.16 1800 R 19.7 +- 0.1
-------------------------------------------
The magnitude is calibrated against nearby USNO-B1.0 stars and is not
corrected for the Galactic extinction.