{
  "bibcode": "2006GCN..5500....1B",
  "body": "A. Breeveld (MSSL/UCL) and J. Racusin (PSU) report on behalf of the \nSwift/UVOT team:\n\nThe Swift/UVOT began taking data on 2006-09-01 at 22:33:37 on the field \nof the INTEGRAL burst 060901 about 4 hours after the burst (Mereghetti \net al., GCN 5491) .  At the position of the XRT error circle (Racusin \net al., GCN 5494) there are no new sources, although there is a \ncatalogued source. There is no source seen either at the position of \nthe new source in J band reported by Cobb et al. (GCN 5495). In the \nsummed UVOT images we obtain the following 3 sigma upper limits:\n\nFilter         T_range(s)          Exp(s)          3sig_UL(mag)\nV               19306-19729     413.2           19.4\nB               22900-23805     885.1           20.6\nU              29566-29619     51.4             19.2\nUVW1     28660-29560      885.6           20.6\nUVW2     13777-17580      657.5           20.9\nWhite (160-650nm)   23812-23821   8.7   18.7",
  "circularId": 5500,
  "createdOn": 1157298530000,
  "email": "aad@mssl.ucl.ac.uk",
  "subject": "060901: Swift UVOT followup observations",
  "submitter": "Alice Breeveld at MSSL-UCL  <aad@mssl.ucl.ac.uk>"
}