{
  "body": "Mohammad Odeh (Al-Khatim Observatory, AKO, operated by the International\nAstronomical Center in Abu Dhabi, UAE), and Dalya Akl (American University\nof Sharjah, UAE), report:\n\nWe used our 0.36m f/7.7 robotic telescope to observe the field of GRB\n231215A, which was detected by Swift (D'Avanzo et al., GCN 35343), and its\noptical counterpart was detected by (Pankov et al., GCN 35349; Sasada et\nal., GCN 35351; An et al., GCN 35353; Wagh et al., GCN 35354).\n\nThe observation was done on 15 December starting at 20:07:36 UT, which\ncorresponds to 10.34 hours after the GRB trigger time, using an (Ic)\nfilter. We obtained 17x180s images, and we didn't detect a credible source\nwithin the uncertainty radius of the Swift-XRT position (Goad et al., GCN.\n35357).\n\nThe following 5-sigma upper limit is calculated using the ATLAS catalog as\na reference:\nIc = 18.8\nThe magnitude is not corrected for Galactic extinction.\n",
  "createdOn": 1702675980807,
  "submitter": "Mohammad Odeh at Al Khatim Observatory M44 <mshodeh@gmail.com>",
  "submittedHow": "email-legacy",
  "circularId": 35362,
  "bibcode": "2023GCN.35362....1O",
  "eventId": "GRB 231215A",
  "subject": "GRB 231215A: AKO Optical Upper Limit"
}