[vsnet-grb-info 3571] GRB 060805: optical upper limit in R

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  5405
SUBJECT: GRB 060805: optical upper limit in R
DATE:    06/08/05 21:39:23 GMT
FROM:    Alexander Stefanescu at MPE  <astefan at mpe.mpg.de>

M. Muehlegger, S. Duscha, A. Stefanescu, G. Kanbach, N. Primak, F. Schrey,
H. Steinle (MPE Garching) of the OPTIMA-Burst team report from
the 1.3m Skinakas Observatory (University of Crete, Heraklion, Greece): 

We observed the position of the XRT errorcircle of GRB 060805 (trigger
#222683, Ziaeepour, et al., GCN Circ. 5398) on 2006 Aug 05, 18:43 UT 
(mid-exposure; about 14 hours post burst): in a 30 min R-filter exposure we 
do not detect a counterpart candidate brighter than R=21.5