TITLE: GCN CIRCULAR NUMBER: 18479 SUBJECT: GRB 151027A: KAIT optical afterglow confirmation DATE: 15/10/27 04:22:02 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 151027A (Maselli et al., GCN 18478) immediately after receiving the trigger. 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. Inside the XRT error circle we detected an un-cataloged varying source with coordinates of : RA = 18:09:56.70 (J2000) DEC= +61:21:13.01 (J2000) The object location is consistent with the position reported from UVOT (Maselli et al., GCN 18478). The object has clear band mag of ~13.0 at the moment. Follow-up observations are encouraged.