[vsnet-grb-info 21624] GRB 190114B: Liverpool Telescope near-IR observations
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Wed Jan 16 03:32:17 JST 2019
TITLE: GCN CIRCULAR
NUMBER: 23723
SUBJECT: GRB 190114B: Liverpool Telescope near-IR observations
DATE: 19/01/15 18:31:09 GMT
FROM: Luca Izzo at IAA-CSIC <luca.izzo at gmail.com>
M. Blazek, L. Izzo (HETH-IAA/CSIC) A. de Ugarte Postigo (DARK/NBI & HETH-IAA/CSIC), D. A. Kann, C. C. Thoene (HETH-IAA/CSIC) report:
We observed the field of GRB 190114B (Siegel et al. GCN 23686) with the IO:I camera mounted on the 2-m Liverpool Telescope located in La Palma, Spain. Observations started on January 15th at 02:51:47 UT (7.34 hours after the GRB trigger) and we obtained a series of 10x60s images in the H filter.
We detect the faint optical afterglow (Fernandez-Garcia et al. GCN 23694, Pozanenko et al. GCN 23696, Selsing et al. GCN 23713, Volnova et al., GCN 23722) for which we measure the following magnitude:
H(AB) = 20.35 +- 0.34 mag
The calibration was performed using four nearby 2MASS stars.
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