GCN Circular 22298
Subject
GRB 180102A: NOT optical observations
Date
2018-01-03T08:20:40Z (6 years ago)
From
Daniele Malesani at Dark Cosmology Centre, Niels Bohr Inst <malesani@dark-cosmology.dk>
D. Malesani (DARK/NBI), K. E. Heintz (Univ. Iceland and DARK/NBI), A.
Sagues Carracedo (NOT), Andreas Kjaer Dideriksen (Aarhus Univ.), report
on behalf of a larger collaboration:
We observed the field of GRB 180102A (Page et al., GCN 22292; Veres, GCN
22295) with the Nordic Optical Telescope (NOT) equipped with the AlFOSC
camera. Observations were carried out in the SDSS r and z filters (900
and 1000 s exposure, respectively), with a seeing of 1.5", and started
on 2018 Jan 3.1769 UT (12.42 hr after the GRB trigger).
At the position of the X-ray counterpart (D'Ai et al., GCN 22296), no
objects are detected down to (preliminary) limiting magnitudes r = 22.5,
z = 22.0 (all AB, calibrated with reference to nearby Pan-STARRS stars).