[vsnet-grb-info 7682] GRB 090424: Optical observations from 1.23m CAHA
GCN Circulars
gcncirc at capella.gsfc.nasa.gov
Sat Apr 25 07:59:16 JST 2009
TITLE: GCN CIRCULAR
NUMBER: 9236
SUBJECT: GRB 090424: Optical observations from 1.23m CAHA
DATE: 09/04/24 22:59:07 GMT
FROM: Javier Gorosabel at IAA-CSIC <jgu at iaa.es>
J. Gorosabel, P. Kubanek , M. Jelinek (IAA-CSIC), A. de Ugarte
Postigo (ESO),
J. Aceituno (CAHA), report on behalf of a larger collaboration:
We have observed the field of GRB 090424 (Cannizzo et al., GCN 9223)
with
the 1.23m telescope at Calar Alto. The afterglow is clearly detected
in BVRI-bands.
On April 24.87 UT the afterglow showed a magnitude of R = 19.3 +/-
0.1, as
compared to stars from the USNO-B1.0.
Calar Alto is operated jointly by MPIA and IAA-CSIC.
Further observations are ongoing.
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