TITLE: GCN CIRCULAR NUMBER: 44321 SUBJECT: EP260416a: KAIT optical upper limit DATE: 26/04/17 06:10:43 GMT FROM: Weikang Zheng at UC Berkeley <weikang@berkeley.edu> WeiKang Zheng (UCB), Xuhui Han (NAOC), Pinpin Zhang (NAOC) and Alexei V. Filippenko (UCB) report on behalf of the KAIT GRB team: The 0.76-m Katzman Automatic Imaging Telescope (KAIT), located at Lick Observatory, observed the field of EP260416a (Hu et al., GCN 44307) starting at 05:36, Apr 16 UT, about 7.2 minutes after the burst. A set of 20s, 40s and 60s clear (roughly R) filter images were obtained. In our coadd image, we did not detect the OT (Ducoin et al., GCN 44310; Li et al., GCN 44315; Hua et al., GCN 44318; Lee et al., GCN 44319) down to a limiting mag of 21.0 mag (Vega) at a mid-time of 1.3 hours after the burst. Our result is consistent with the OT reported at a fatiner magnitude by COLIBRÍ at a similar time (Ducoin et al., GCN 44310). View this GCN Circular online at https://gcn.nasa.gov/circulars/44321. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...