{
  "submitter": "Filipp Dmitrievich Romanov at Amateur astronomer <filipp.romanov.27.04.1997@gmail.com>",
  "createdOn": 1773587166116,
  "submittedHow": "email",
  "circularId": 44020,
  "body": "I observed the field of GRB 260310A = AT 2026fgk (Fermi GBM Team, GCN\nCirc. #43951) remotely using iTelescope.Net T21 (0.43-m f/6.8\nreflector + CCD + f/4.5 focal reducer) in Utah Desert Remote\nObservatory at Great Basin Desert, Beryl Junction, Utah, USA.\n\nSix images with exposures of 300 sec. and Rc filter were obtained on\n2026-03-15 from 08:56:17 UT (5.166 d. after the trigger) to 09:32:41\nUT (5.191 d. after the trigger). I detected the optical afterglow and\nmeasured its magnitude (compared to Rc magnitudes of nearby stars from\nthe ATLAS star catalog: Tonry et al., 2018) in the stacked image =\n18.0 +/- 0.1 Rc.\n\nMagnitude is not corrected for Galactic extinction. The magnitude may\nbe affected by contamination from the host galaxy.\n\nStacked image: https://www.flickr.com/photos/filipp-romanov/55149149955/\n\nF. D. Romanov (AAVSO).\n",
  "eventId": "GRB 260310A",
  "bibcode": "2026GCN.44020....1R",
  "subject": "GRB 260310A / AT 2026fgk: iTelescope optical observations"
}