TITLE:   GCN CIRCULAR
NUMBER:  24825
SUBJECT: GRB 190613B: Optical observations from NOT
DATE:    19/06/14 04:57:01 GMT
FROM:    Antonio de Ugarte Postigo at IAA-CSIC  <deugarte@iaa.es>

A. de Ugarte Postigo (HETH/IAA-CSIC, DARK/NBI), D.B. Malesani 
(DTU Space), K.E. Heintz (U.Iceland), S. Moran (UTU, NOT) report 
on behalf of a larger collaboration:

We observed the field of GRB 190613B (D’Ai et al. GCN 24807, 
Burgess et al. GCN 24808, Beardmore et al. GCN 24812, Bissaldi et 
al. GCN 24814, Marshall et al. GCN 24817, Zheng & Filippenko 
GCN 24818, Ukwatta et al. GCN 24820, Page et al. GCN 24823) 
using STANCAM, mounted on the 2.5m Nordic Optical Telescope, at 
Roque de los Muchachos Observatory (La Palma, Spain). The 
observations consisted of 3x300s imaging in R-band and 5x200s in 
z-band. Observations started on 14 June at 2:50 UT (16.05 hr after 
the burst). The optical counterpart is well detected in both bands at 
an estimated R(Vega) = 21.8+/-0.2 mag, as compared to field stars 
from the Nomad catalogue.