{
  "circularId": 34493,
  "submittedHow": "email-legacy",
  "subject": "GRB 230818A: AKO Upper Limit",
  "submitter": "Mohammad Odeh at Al Khatim Observatory M44 <mshodeh@gmail.com>",
  "bibcode": "2023GCN.34493....1O",
  "body": "Mohammad Odeh, Osama Ghannam, Anas Mohammad, and Khalfan Al-Noaimy, report\non behalf of Al-Khatim Observatory (AKO) operated by the International\nAstronomical Center in Abu Dhabi, UAE:\n\nWe observed the field of GRB 230818A (Lipunov et al., GCN 34476; Fermi: GBM\nteam, GCN 34478; Swift: Tohuvavohu et al., GCN 34479; Gompertz et al., GCN\n 34480; Moskvitin et al., GCN 34483; Malesani et al., GCN 34485; Siegel et\nal., GCN 34486; Pankov et al., GCN 34487; Quadri et al., GCN 34488; Pavoni\net al., GCN 34490; Klose et al., GCN 34491) with our 0.36m f/7.7 robotic\ntelescope.\n\nWe obtained 13 x 180 sec. images in the clear filter on 19 August, from\n16:05 to 17:23 UT, (t_mid - t0 = 17.3 hours) with an upper limit of\nmagnitude = 22.0 for the stacked frames.\n\nWe also obtained 15 x 180 sec. images in the Ic filter from 16:02 to 17:32\nUT, (t_mid - t0 = 17.35 hours) with an upper limit of magnitude = 20.2 for\nthe stacked frames.\n\nNo reliable optical afterglow object was detected.\n",
  "eventId": "GRB 230818A",
  "createdOn": 1692467619281
}