TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  5500
SUBJECT: 060901: Swift UVOT followup observations
DATE:    06/09/03 15:48:50 GMT
FROM:    Alice Breeveld at MSSL-UCL  <aad@mssl.ucl.ac.uk>

A. Breeveld (MSSL/UCL) and J. Racusin (PSU) report on behalf of the 
Swift/UVOT team:

The Swift/UVOT began taking data on 2006-09-01 at 22:33:37 on the field 
of the INTEGRAL burst 060901 about 4 hours after the burst (Mereghetti 
et al., GCN 5491) .  At the position of the XRT error circle (Racusin 
et al., GCN 5494) there are no new sources, although there is a 
catalogued source. There is no source seen either at the position of 
the new source in J band reported by Cobb et al. (GCN 5495). In the 
summed UVOT images we obtain the following 3 sigma upper limits:

Filter         T_range(s)          Exp(s)          3sig_UL(mag)
V               19306-19729     413.2           19.4
B               22900-23805     885.1           20.6
U              29566-29619     51.4             19.2
UVW1     28660-29560      885.6           20.6
UVW2     13777-17580      657.5           20.9
White (160-650nm)   23812-23821   8.7   18.7