TITLE: GCN CIRCULAR NUMBER: 32935 SUBJECT: GRB 221110A: COATLI Second-Epoch Upper Limits DATE: 22/11/11 21:03:17 GMT FROM: Alan M Watson at UNAM Alan M. Watson (UNAM), Nat Butler (ASU), Rosa Becerra (UNAM), Simone Dichiara (PSU), Tzveti Dimitrova (ASU), Océlotl López (UNAM), Diego González (UNAM), Alexander Kutyrev (GSFC), William H. Lee (UNAM), Margarita Pereyra (UNAM), and Eleonora Troja (UTV/ASU) report: We observed the field of the GRB 221110A (Williams et al., GCN Circ. 32925) with the COATLI 50-cm telescope and HUITZI f/8 imager at the Observatorio Astronómico Nacional on the Sierra de San Pedro Mártir ( http://coatli.astroscu.unam.mx) from 2022-11-11 03:28 UTC to 09:01 UTC (25.0 to 30.6 hours after the trigger), obtaining a total of 270 minutes of exposure in the r filter. The source detected in our earlier observations (Pereyra et al., GCN Circ. 32927 has now faded and is not detected to a 3-sigma limit of r > 22.6 Our photometry is calibrated against the Pan-STARRS1 catalog, is on an approximate AB system, and is not corrected for Galactic extinction in the direction of the GRB. We thank the COATLI/HUITZI technical team and the staff of the Observatorio Astronómico Nacional.