GRB 241206A: DDOTI Upper Limit on the Afterglow

We observed the field of the GRB 241206A detected by Fermi/GBM (Fermi GBM Team, GCN 38447) and Swift/BAT-GUANO (DeLaunay et al., GCN 38453) with the DDOTI/OAN wide-field imager at the Observatorio Astronómico Nacional on Sierra San Pedro Mártir (http://ddoti.astroscu.unam.mx) on 2024-12-08 from 09:51 to 13:14 UTC (45.7 to 49.2 hrs after the event), obtaining a total of 1.7 hours of exposure in the w filter down to a 10-sigma limiting magnitude of w = 20.5. Comparing our observations to the USNO-B1 and PanSTARRS PS1 DR2 catalogues, we detect no uncatalogued sources within the observed field to our 10-sigma limit within the error radius reported by Fermi/GBM (Fermi GBM Team, GCN 38447). We thank the DDOTI technical team and the staff of the Observatorio Astronómico Nacional.