TITLE: GCN CIRCULAR NUMBER: 17529 SUBJECT: GRB 150302A: KAIT Optical Upper Limit DATE: 15/03/02 07:30:14 GMT FROM: Weikang Zheng at UC Berkeley 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 GRB 150302A (Lien et al., GCN 17526) starting at 05:44:50 UT, 134 s after the burst, under bright moon condition. First few images were useless until ~18 minutes 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 the afterglow candidate (Fynbo et al., GCN 17527) in our images, with a limiting magnitude of R~17.8 (calibrated to USNO B1.0) at a mid-time of 18.9 minutes after the burst.