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TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2267 SUBJECT: GRB030528, BVRI field photometry DATE: 03/06/03 22:38:31 GMT FROM: Arne A. Henden at USNO/USRA <aah@nofs.navy.mil> A. Henden (USRA/USNO) reports on behalf of the USNO GRB team: We have acquired BVRcIc all-sky photometry for a 11x11 arcmin field centered at the coordinates of the SXC error box for the HETE burst GRB030528 (Villasenor et al., GCN 2261) with the USNOFS 1.0-m telescope on one photometric night. Stars brighter than V=13.5 are saturated and should be used with care. We have placed the photometric data on our anonymous ftp site: ftp://ftp.nofs.navy.mil/pub/outgoing/aah/grb/grb030528.dat The astrometry in this file is based on linear plate solutions with respect to UCAC2. The external errors are less than 100mas. However, due to the crowding in this galactic field, only isolated stars will have decent astrometry or photometry. As always, you should check the dates on the .dat file prior to final publication to get the latest photometry. We anticipate one more night of photometry to be acquired during this week.
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