GRB 201209A: KAIT Optical Upper Limit

The 0.76-m Katzman Automatic Imaging Telescope (KAIT), located at Lick Observatory, responded to Swift GRB 201209A (Gropp et al., GCN 29005) starting at 05:48:09 UT, 197 s after the burst under cloudy condition. 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 optical afterglow candidate within the XRT position error circle (Gropp et al., GCN 29005), neither in single image, nor in the co-add images. The typical limiting magnitude of our single clear image is about 15.0 mag calibrated to the USNOB1.0 catalog.