{
  "bibcode": "2022GCN.32649....1O",
  "body": "Following the detection of the bright hard X-ray and optical transient\nSwift J1913.1+1946 (Dichiara et al., GCN 32632; Lipunov et al., GCN 32634),\nphotometric observations were obtained using a 0.36 meter SCT telescope\nequipped with a ASI2600MM Pro CCD camera and photometric infrared filter\n(Ic).\n\nThe observations started at 15:30:59 UT on 09 October 2022 and ended at\n18:05:46 UT the same day. In the beginning, the magnitude of the transient\nwas 15.5, then it faded at 15:49:49 UT to 15.6, and gain it faded at\n17:14:13 UT to 15.9:\n\nTwelve 180 s exposures were taken during the period, with the following\ndetails:\n\nJD                   Mag                 MagErr\n2459862.148 15.495154      0.11745\n2459862.154 15.489504      0.075239\n2459862.161 15.669481      0.056841\n2459862.168 15.669936      0.055772\n2459862.219 15.883595      0.047614\n2459862.221 15.910906      0.044903\n2459862.223 15.875109      0.049559\n2459862.226 15.872771      0.048612\n2459862.249 15.927693      0.057741\n2459862.251 15.873584      0.051357\n2459862.253 15.904383      0.051412\n2459862.255 15.89597        0.055238",
  "circularId": 32649,
  "createdOn": 1665396796000,
  "email": "mshodeh@gmail.com",
  "subject": "Swift J1913.1+1946: Early Optical Photometry",
  "submitter": "Mohammad Odeh at Al Khatim Observatory M44  <mshodeh@gmail.com>"
}