[AAVSO-HEN] GRB 090516: NOT optical observations

[grb at aavso.org]

The following is a GCN Circular circulated via the AAVSO network.
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TITLE:   GCN CIRCULAR
NUMBER:  9379
SUBJECT: GRB 090516: NOT optical observations
DATE:    09/05/16 22:47:41 GMT
FROM:    Javier Gorosabel at IAA-CSIC  <jgu at iaa.es>

J. Gorosabel (IAA-CSIC), de Ugarte Postigo (ESO, Santiago), D. Montes
(UCM, Madrid), A. Klutsch (UCM, Madrid), A.J. Castro-Tirado (IAA-CSIC),
report on behalf of a larger collaboration:

 We observed the optical afterglow of GRB 090516 (Guidorzi et al. GCN
9375) with the 2.5m NOT(+STANCAM) telescope.  On May 16.889 UT (12.9
hours post GRB) the afterglow shows an R-band magnitude of R=21.3+/-0.1
against USNO-B1.0 field stars.