{
  "createdOn": 1691947975579,
  "subject": "GRB 230812B: Detected Optical Afterglow Candidate",
  "bibcode": "2023GCN.34405....1O",
  "submitter": "Mohammad Odeh at Al Khatim Observatory M44 <mshodeh@gmail.com>",
  "circularId": 34405,
  "eventId": "GRB 230812B",
  "submittedHow": "email-legacy",
  "body": "Mohammad Odeh, Osama Ghannam, Anas Mohammad, Khalfan Al-Noaimy, and Sameh\nAl-Ashi, report on behalf of Al-Khatim Observatory (AKO) operated by the\nInternational Astronomical Center in Abu Dhabi, UAE:\n\n\n\nWe observed the field of GRB 230812B (Lesage et al., GCN 34387; Scotton et\nal., GCN 34392; Page, GCN 34394; Zheng & Filippenko, GCN 34395; Lipunov et\nal., GCN 34396; Salgundi et al., GCN 34397; Ackley et al., GCN 34398; Xiong\net al., GCN 34401; Casentini et al., GCN 34002; Frederiks et al., GCN\n34403; Mao et al., GCN 34404), with our 0.36m f/7.7 robotic telescope. The\nobservation was done on 13 August 2023 from 16:15 to 16:47 (UT), about 21.6\nhours from the trigger.\n\n\n\nWe obtained multiple 180-sec exposures in Ic filter. We detected an optical\nafterglow candidate at:\n\nR.A. (J2000): 16:36:31.45\n\nDec. (J2000): +47:51:32.3\n\n\n\nThat is the same localization of (Zheng & Filippenko, GCN 34395), which is\nabout 5.5 arcsec from the improved Swift/XRT localization (Page, GCN 34394).\n\n\n\nThe following observation was calculated using Atlas catalogue as a\nreference:\n\n-----------------------------------------------------------------------------\n\nObsTime (mid), Exposure (sec), Filter, Mag\n\n-----------------------------------------------------------------------------\n\n2023-08-13T16:32:40Z, 10 x 180s (stacked), Ic, 18.8 +/- 0.21\n\n-----------------------------------------------------------------------------\n\n\n\nThe magnitude is not corrected for galactic extinction.\n"
}