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TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2315 SUBJECT: XRF030723, optical observations DATE: 03/07/24 05:25:58 GMT FROM: Weidong Li at UC Berkeley KAIT/LOSS <weidong@astron.berkeley.edu> W. Li, R. Chornock, A. V. Filippenko, and S. Jha (UC Berkeley) report: The Katzman Automatic Imaging Telescope (KAIT) responded to GRB 030723 (HETE Trigger #2777) automatically. The first four alerts issued via GCN at 6:29 UT, 6:37 UT, 6:43 UT, and 6:45 UT were not observed due to altitude limits, and we remotely (but manually) obtained 8 images starting at 7:38 UT (about 1.2 hours after the burst), covering a 12'.5 x 12'.5 region centered on R.A. = 21:49:41, Decl. = -27:48:29 (J2000). KAIT responded to the alert issued via GCN at 9:47 UT (3.3 hours after the burst) automatically, and obtained 9 images covering a 12'.5 x 12'.5 region centered on R.A. = 21:48:51, Decl. = -27:41:16 (J2000). The alert issued at 13:38 UT was not observed due to bright dawn. Visual inspection of the images reveals no obvious new source compared with the DSS II (red) to a limiting magnitude of 19.0 - 20.0 (the images have different exposure times). Specifically, the images taken around 7:38 UT covered about 50% of the error circle of the ground analysis burst position issued at 13:38 UT via GCN.
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