TITLE: GCN CIRCULAR NUMBER: 31850 SUBJECT: GRB 220408A: KAIT Optical Observations DATE: 22/04/08 09:02:14 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 the Swift GRB 220408A (Caputo et al., GCN 31848; see also Fermi/GBM detection, GCN 31847) starting at 06:30:47 UT, ~44 min after the burst. Observations were performed with a sequence in the clear (roughly R), V, and I filters, and the exposure time was 20s per image. We did not detect the optical afterglow reported by UVOT (Caputo et al., GCN 31848) in any of our single images. We marginally detected the afterglow in the coadd image in clear band, which we measured its brightness of 21.4 +/- 0.3 mag at ~53 min after the burst, calibrated to the Pan-STARRS1 catalog.