{
  "bibcode": "2020GCN.27982....1M",
  "body": "A. Moskvitin (SAO RAS) on behalf of the larger GRB follow-up team\nreport.\n\nWe observed the field of the GRB 200613A (Fermi GBM team, GCN 27926;\nBissaldi et al., GCN 27930; Ohno et al., GCN 27931; Ohno et al.,\nGCN 27964) with the 1m telescope of SAO RAS, Zeiss-1000,\nequipped with the Multi-Mode Photometer-Polarimeter (MMPP).\nWe obtained 6 x 300 sec. images in Rc band on 2020.06.16\n19:05:00--19:45:16 UT, T_mid - T0 = 3.5799 days.\n\nThe optical afterglow (Kann et al., GCN 27935; Pozanenko et al.,\nGCN 27937; Izzo et al., GCN 27939; Zhu et al., GCN 27943;\nMarshall, GCN 27944; Liu et al., GCN 27949; Belkin et al., GCN 27958;\nFu et al., GCN 27971; Belkin et al., GCN 27978) is clearly visible\nin individual images and stacked frame with the brightness of\nR = 20.58 +/- 0.05.\n\nThe photometry is based on nearby SDSS DR12 stars\nSDSS_id        R(Lupton)\nJ101206.52+454606.4 14.962\nJ101207.75+454443.4 17.877\nJ101220.88+454613.5 16.508\nJ101211.59+454721.5 18.659\nJ101209.58+454817.4 18.076",
  "circularId": 27982,
  "createdOn": 1592504113000,
  "email": "mosk@sao.ru",
  "subject": "GRB 200613A: SAO RAS optical observations",
  "submitter": "Moskvitin Alexander at SAO RAS  <mosk@sao.ru>",
  "eventId": "GRB 200613A"
}