{
  "bibcode": "2021GCN.29599....1R",
  "body": "I observed the field of GRB 210306A (D'Elia et al., GCN Circ. 29597)\nwith remote telescope T24 (0.61-m f/6.5 reflector + CCD) of\niTelescope.Net in Sierra Remote Observatory (Auberry, California, USA)\non 2021-03-06. Two images (exposures 300 seconds, BINx1) were obtained\nwith luminance filter since 04:42:56 UT (2939 seconds after the\ntrigger) and since 04:48:59 UT (3302 seconds after the trigger). I\nclearly detected the optical afterglow in UVOT position. The following\nmagnitudes were measured from comparison to r magnitudes of nearby\nstars from Pan-STARRS DR1 catalogue (Chambers et al., 2016): 17.80\n(+/- 0.057) and 17.97 (+/- 0.038).\n\nMagnitudes were not corrected for Galactic extinction.\n\nStacked image available here:\nhttps://www.flickr.com/photos/filipp-romanov/51007330278",
  "circularId": 29599,
  "createdOn": 1615010028000,
  "email": "filipp.romanov.27.04.1997@gmail.com",
  "subject": "GRB 210306A: iTelescope optical afterglow observations",
  "submitter": "Filipp Dmitrievich Romanov at Amateur astronomer  <filipp.romanov.27.04.1997@gmail.com>",
  "eventId": "GRB 210306A"
}