GCN Circular 20582
Subject
GRB 170202A: NOT afterglow observations
Date
2017-02-02T23:31:00Z (7 years ago)
From
Thomas Kruehler at MPE Garching <kruehler@mpe.mpg.de>
T. Kruehler (MPE Garching), A. de Ugarte Postigo (IAA-CSIC, DARK/NBI),
and Pasi J. Hakala (FINCA) report on behalf of the Nordic GRB
collaboration:
We observed the field of GRB 170202A (Racusin et al. GCN 20575)
with the NOT equipped with ALFOSC. Photometry in the r and i-band
filter started at 22:46 UTC on 2017-02-02, 4.3 hr after the GRB
trigger.
Calibrating our images against magnitudes of field stars from the
SDSS catalog, we measure a preliminary brightness of the optical
afterglow (Racusin et al. GCN 20575