{
  "eventId": "GRB 250129A",
  "subject": "GRB 250129A: iTelescope optical observation",
  "circularId": 39101,
  "createdOn": 1738268155556,
  "body": "I observed the field of GRB 250129A (Beardmore et al., GCN Circ.\n39066) remotely using telescope T11 (0.51-m f/6.8 reflector + CCD +\nf/4.5 focal reducer) of iTelescope.Net (located in Utah Desert Remote\nObservatory at Great Basin Desert, Beryl Junction, Utah, USA) on\n2025-01-30. Five images (exposure times of 300 seconds, BINx1) were\nobtained with Rc filter. I detected the optical afterglow in all\nimages in the UVOT position. I measured the magnitude of it = 19.7 +/-\n0.2 in the stacked image (mid time 13:11:06 UT = 32.43 h. after the\ntrigger) compared to r magnitudes of nearby stars from Pan-STARRS DR1\ncatalogue (Chambers et al., 2016).\n\nMagnitude was not corrected for Galactic extinction.\n\nStacked image: https://www.flickr.com/photos/filipp-romanov/54297183051/\n\nF. D. Romanov (AAVSO).\n",
  "submittedHow": "email",
  "submitter": "Filipp Dmitrievich Romanov at Amateur astronomer <filipp.romanov.27.04.1997@gmail.com>",
  "bibcode": "2025GCN.39101....1R"
}