[vsnet-grb-info 3385] GRB 060605: ROTSE-III Detection of Optical Counterpart

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  5220
SUBJECT: GRB 060605: ROTSE-III Detection of Optical Counterpart 
DATE:    06/06/05 18:25:27 GMT
FROM:    Eli Rykoff at U of Michigan/ROTSE  <erykoff at umich.edu>

E.S. Rykoff (U Mich), B. E. Schaefer (Louisiana State), report on behalf 
of the ROTSE collaboration:

ROTSE-IIIa, located at Siding Spring Observatory, Australia, responded 
to GRB 060605 (Swift trigger 213630). The first image was at 18:16:33.3 
UT, 48.7 s after the burst (5.4 s after the GCN notice time). The 
unfiltered images are calibrated relative to USNO A2.0. We detect a 16.3 
magnitude, steady source with coordinates:

      21:28:37.3      -06:03:30.6    (J2000)

start UT    	mag     mlim(of image)
----------------------------------
18:17:18.0     16.3     16.5


This source is not visible in DSS (second epoch), 2MASS or the MPChecker 
database.

A jpeg image is available at 
http://www.rotse.net/images/gsb213630_3a001-010_key.jpg

Continuing observations are in progress.