[vsnet-grb-info 3412] GRB 070706B: Watcher upper limit

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  5247
SUBJECT: GRB 070706B: Watcher upper limit
DATE:    06/06/09 11:45:22 GMT
FROM:    Martin Jelinek at Inst.Astrophys.Andalucia,Granada  <mates at iaa.es>

John French, Garry Melady (UCD Dublin) 
Martin Jelínek, Antonio de Ugarte Postigo (IAA CSIC Granada) 
and Petr Kubánek (ISDC Versiox) 
on behalf of the Watcher Collaboration

"The Watcher 0.4m telescope, located in Boyden Observatory, 
South Africa, observed the SWIFT error box for GRB 060607B 
(Krimm et al. GCN 5244, Barbier et al GCN 5246). 

The observation started at 03:27:40 UT (~4h after the GRB). 
A limiting R-band calibrated, unfiltered magnitude of 18.5 
is derived for any optical afteglow emission arising from 
this particular GRB.

This message is quotable".