Return to Home Page
TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2214 SUBJECT: GRB030429, BVRcIc field photometry DATE: 03/05/07 15:56:27 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 about 3arcmin from the coordinates of the optical transient (Gilmore et al. GCN 2184) for the HETE burst GRB030429 (H2695; Doty et al. GCN 2211) with the USNOFS 1.0-m telescope on two marginal nights. 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/grb030429.dat The astrometry in this file is based on linear plate solutions with respect to UCAC2. The external errors are less than 100mas. Due to the high airmass and drifting smoke from prescribed forest fires, the external photometric error is larger for B and Ic than normal; approximately 0.05mag. We will acquire additional photometry in the next week or so to improve these errors. We will also reposition to center the optical transient. As always, you should check the dates on the .dat file prior to final publication to get the latest photometry. There is a README file on the ftp directory to give you information about the procedures used to calibrate these fields.
Return to the Powerful Daisaku
vsnet-adm@kusastro.kyoto-u.ac.jp
