GCN Circular 18932
Subject
GRB 160123A: NOT J-band observations
Date
2016-01-24T02:59:39Z (8 years ago)
From
Daniele Malesani at Dark Cosmology Centre, Niels Bohr Inst <malesani@dark-cosmology.dk>
Daniele Malesani (DARK/NBI), Anlaug Amanda Djupvik (NOT), Tom Reynolds
(NOT and Tuorla Obs.), and Pall Jakobsson (Univ. Iceland) report on
behalf of a larger collaboration:
We observed the field of GRB 160123A (Malesani et al., GCN 18926) with
the Nordic Optical Telescope (NOT) equipped with the NOTCam
near-infrared camera. Observations were carried out in the J filter. Sky
conditions were not optimal, with moonlit clouds and a seeing of 1.7".
Three sets of nine images by 1 minute each were acquired, starting on
Jan 24.067 UT (16.6 hr after the GRB).
After stacking the best 18 images, no source is detected within the XRT
localization area (Beardmore et al., GCN 18927; see also
http://www.swift.ac.uk/xrt_positions/00671447/), down to a limiting
magnitude J > 19.5 (Vega), calibrated against the 2MASS catalog.