{
  "bibcode": "2019GCN.24708....1M",
  "body": "Moskvitin A. S. and Uklein R. I. (SAO RAS)\nreport on behalf of larger collaboration.\n\nWe observed the field of the GRB 190530A (Fermi GBM Team, GCNC 24676;\nLongo et al., GCNC 24679) with the 1-m telescope of SAO RAS\nequipped with the MMPP (Multi-Mode Photometer-Polarimeter)\nand UBVRcIc filters on May 31 / June 1 night.\n\nWe obtained 11 x 300 sec. frames in Rc band.\nThe OT (Lipunov et al., GCNC 24680; Kann et al., GCNC 24684;\nHeintz et al., GCNC 24686; Izzo et al., GCNC 24687;\nXin et al., GCNC 24688; Watson et al., GCNC 24690;\nLipunov et al., GCNC 24693; Xin et al., GCNC 24697;\nBelkin et al.,  GCNC 24698; Kann et al., GCNC 24700;\nSiegel, GCNC 24703) is clearly detected in our stacked image.\nThe OT brightness is R(AB) = 19.39 +/- 0.05 (T_mid - T0 = 1.353 days).\n\nThe OT magnitude was calculated against the nearby SDSS stars\nwhose magnitudes were transformed with the equations of Lupton (2005).\nThe magnitude of OT was converted to AB system\nand was not corrected for the Galactic extinction.",
  "circularId": 24708,
  "createdOn": 1559391686000,
  "email": "mosk@sao.ru",
  "subject": "GRB 190530A: SAO RAS optical observations",
  "submitter": "Moskvitin Alexander at SAO RAS  <mosk@sao.ru>",
  "eventId": "GRB 190530A"
}