{
  "bibcode": "2023GCN.35226....1R",
  "circularId": 35226,
  "subject": "GRB 231129C: iTelescope likely optical afterglow AT 2023yph discovery",
  "submittedHow": "email-legacy",
  "eventId": "GRB 231129C",
  "createdOn": 1701320260916,
  "body": "I observed the field of GRB 231129C (Fermi GBM Team, GCN Circ. 35217)\nnear the MAXI (GCN Circ. 35223) sky region using remote telescope T72\n(0.51-m f/6.8 Corrected Dall-Kirkham + CCD) of iTelescope.Net in Deep\nSky Chile at Rio Hurtado Valley, Chile. 9 images (with exposures 300\nseconds, BINx1) were obtained with Ic filter with midtime 02:27 UT. I\ndetected an uncataloged source with position 00 49 17.780 -81 29 45.83\nand measured its brightness near +18 mag. Magnitude was not corrected\nfor Galactic extinction. I am guessing this is an optical afterglow of\nGRB 231129C. Now it is AT 2023yph\nhttps://www.wis-tns.org/object/2023yph\nF. D. Romanov (AAVSO).\n\n",
  "submitter": "Filipp Dmitrievich Romanov at Amateur astronomer <filipp.romanov.27.04.1997@gmail.com>"
}