[vsnet-grb-info 1884] GRB 050801: ROTSE-III Detection of Possible Counterpart

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  3723
SUBJECT: GRB 050801: ROTSE-III Detection of Possible Counterpart 
DATE:    05/08/01 18:34:58 GMT
FROM:    Eli Rykoff at U of Michigan/ROTSE  <erykoff at umich.edu>

E.S. Rykoff (U Mich), S.A. Yost (U Mich), W. Rujopakarn (U Mich) report 
on behalf of the ROTSE collaboration:

ROTSE-IIIc, located at the H.E.S.S. site at Mt. Gamsberg, Namibia, 
responded to GRB 050801 (Swift trigger 148522). The first image was at 
18:28:23.9 UT, 21.9 s after the burst (7.9 s after the GCN notice time). 
The unfiltered images are calibrated relative to USNO A2.0. We detect a 
new object, not visible in the DSS (second epoch), with coordinates:

      13:36:35.4      -21:55:42.0    (J2000)

start UT    	mag     mlim(of image)
----------------------------------
18:28:23.9     15.0     17.0


Continuing observations are in progress.