[vsnet-grb-info 14996] GRB 150416A: NOT optical observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  16290
SUBJECT: GRB 150416A: NOT optical observations
DATE:    14/05/17 03:32:40 GMT
FROM:    Antonio de Ugarte Postigo at IAA-CSIC  <deugarte at iaa.es>

J. Gorosabel (IAA-CSIC, UPV-EHU), D. Xu (DARK/NBI), A. de Ugarte Postigo
(IAA-CSIC, DARK/NBI), J.P.U. Fynbo (DARK/NBI), P. Jakobsson (U. Iceland),
D. Malesani (DARK/NBI), N.R. Tanvir (U. Leicester), D. Watson (DARK/NBI),
E. Gafton (OKC, Stockholm Univ.) and T. Libbrecht (Stockholm Univ.), report
on behalf of a larger collaboration:

We imaged the field of GRB 140516A (Bernardini et al. GCNC 16285) with the
2.5m Nordic Optical telescope equipped with ALFOSC. The observations were
carried out in the R-band on May 16.89163-16.97005 UT (0.88-2.77 hours post
burst) with a total exposure time of 13x300s. We did not detect any objects
brighter than R=24.5 (3 sigma Vega limit calibrated against USNO B1.0)
consistent with the enhanced XRT position (Osborne et al. GCNC 16289).