GCN Circular 22074
WeiKang Zheng and Alexei V. Filippenko (UC Berkeley) report on behalf of the KAIT GRB team: The 0.76-m Katzman Automatic Imaging Telescope (KAIT), located at Lick Observatory, responded to Swift Trigger 783893 (D'Avanzo et al., GCN 22067) starting at 06:30:33 UT, 129 s after the burst. Observations were performed with an automatic sequence in the clear (roughly R), V, and I filters, and the exposure time was 20 s per image. We do not detect any new source within the 3 arcmin Swift-BAT error circle (D'Avanzo et al., GCN 22067), but note that due to small field of view of KAIT telescope, we only cover about 70% of the 3 arcmin error circle. The typical limiting magnitude of our single clear image is about 19.0 calibrated to USNO B1.0. Our result is consistent with the non-detection reported by Guidorzi et al. (GCN 22068).