[vsnet-grb-info 22459] GRB 190515B: Optical observations from OSN

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  24558
SUBJECT: GRB 190515B: Optical observations from OSN
DATE:    19/05/15 22:22:55 GMT
FROM:    Antonio de Ugarte Postigo at IAA-CSIC  <deugarte at iaa.es>

A. de Ugarte Postigo (HETH/IAA-CSIC, DARK/NBI), M. Blazek, L. Izzo, C.C. Thoene, D.A. Kann, K. Bensch (all HETH/IAA-CSIC), A. Sota (IAA-CSIC) report:

We observed the field of GRB 190515B (Moss et al. GCN 24553) with the 1.5m OSN telescope, at Sierra Nevada Observatory (Granada, Spain). The observation started at 21:13 UT (5.15 hr after the burst) when clouds over the observatory allowed, at an airmass of 2, and consisted of 3x300s exposures in I-band.

No new object is detected within the refined XRT error circle (Osborne et al. GCN 24557) down to a 3-sigma limit of I(AB) = 20.5 mag, as compared to stars of the PanSTARRS catalogue.