{
  "bibcode": "2023GCN.33189....1B",
  "body": "S. Belkin (IKI, HSE), S. Nazarov (CrAO),  A. Pozanenko (IKI),  N. Pankov \n(HSE, IKI) report on behalf of GRB IKI FuN:\n\nWe observed the optical afterglow (Zhu et al., GCN 33177; Nazarov  et \nal., GCN 33178; Moskvitin et al. GCNs 33179, 33187; Swain et al., GCN \n33182) of GRB 230116D (Sonbas et al., GCN 33176) with Sintez-Newton \ntelescope of CrAO observatory.  Observation started on 2023-01-16 (UT) \n21:21:41. The series consist of images with an exposure of 120 s in \nClear filter. Preliminary photometry of the stacked images is following\n\nDate UT-start       Exptime Filter t-T0     OT     Err     UL\n2023-01-16 21:23:55 35*120  Clear  0.03764  19.82  0.08    22.5\n2023-01-16 22:44:52 33*120  Clear  0.09245  19.97  0.16    21.9\n\nRef.stars\nUSNO-B1.0\nRA DEC R2\n\n06:34:04.9708800 +49:53:05.863200 15.61\n06:34:38.7820800 +49:49:22.972800 16.29\n06:34:57.9967200 +49:53:01.932000 16.94\n06:34:24.5268000 +49:47:49.801200 15.68",
  "circularId": 33189,
  "createdOn": 1673982073000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 230116D: Sintez-Newton/CrAO optical observations",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 230116D"
}