{
  "bibcode": "2022GCN.32245....1R",
  "body": "I observed the field of GRB 220623A (Sbarufatti et al., GCN Circ.\n32243) remotely using telescope T24 (0.61-m f/6.5 reflector + CCD) of\niTelescope.Net in Sierra Remote Observatory (Auberry, California, USA)\non 2022-06-23. Three images (exposures 300 seconds, BINx1) were\nobtained with Ic filter with mid time 09:26:42 UTC (8548 seconds after\nthe trigger). I did not detect any optical afterglow in the BAT and\nthe XRT (Kennea et al., GCN Circ. 32244) positions. The magnitude\nlimit is about 18 mag, compared to the magnitudes of nearby stars from\nthe USNO-B1.0 Catalog (Monet et al., 2003).\nF. D. Romanov.",
  "circularId": 32245,
  "createdOn": 1655979421000,
  "email": "filipp.romanov.27.04.1997@gmail.com",
  "subject": "GRB 220623A: iTelescope optical upper limit",
  "submitter": "Filipp Dmitrievich Romanov at Amateur astronomer  <filipp.romanov.27.04.1997@gmail.com>",
  "eventId": "GRB 220623A"
}