{
  "eventId": "GRB 250221A",
  "body": "Mohammad Odeh (Al-Khatim Observatory, AKO, operated by the International Astronomical Center in Abu Dhabi, UAE), and Shaikha Alshamsi, Nuha Manal Pattani, and Nidhal Guessoum (American University of Sharjah, UAE), report:\nWe observed the field of GRB 240221A (Swift BAT and XRT team, Caputo et al. GCN 39396, Beardmore et al., GCN 39404; Shilling et al., GCN 39409; COLIBRÍ/DDRAGO, Watson et al. GCN 39397; REM, Melandri et al. GCN 39406) with our 0.36m f/7.7 robotic telescope. The observation was performed on 21 February 2025 at 15:53: 37 UTC (mid-time), 12.32 hours after the trigger.\nWe obtained 11x180s images using Ic filter at the position given by Swift/XRT:\nRA (J2000): 03h 57m 51.09s\nDec (J2000): -15d 08' 00.6\"\nWe did not detect an afterglow candidate at the above position down to a magnitude of Ic = 19.7 for the stacked images. The magnitude was estimated using the Atlas catalogue as a reference. The magnitude is not corrected for galactic extinction.",
  "createdOn": 1740156315740,
  "submitter": "Mohammad Odeh at Al Khatim Observatory M44 <mshodeh@gmail.com>",
  "circularId": 39410,
  "subject": "GRB 250221A: AKO Optical Upper Limit",
  "submittedHow": "email",
  "bibcode": "2025GCN.39410....1O"
}