{
  "bibcode": "2008GCN..7556....1S",
  "body": "A. Sergeev, M. Andreev (Terskol Branch of Institute of Astronomy), V.\nPetkov,  A. Kurenya (BNO INR RAS), A. Pozanenko (IKI) on behalf of larger\nGRB follow up collaboration  report:\n\nWe observed the afterglow of GRB 080330 (Mao et al., GCN 7537) with the\nZeiss-2m telescope of  Mt.Terskol observatory on March 30.  The optical\ncounterpart (Klotz et al., GCN 7536; Mao et al., GCN 7537, Schaefer & Guver,\nGCN 7538; Gomboc et al., GCN 7539; Bloom & Starr, GCN 7542) is clearly\ndetected.\n\nThe photometry of the afterglow against of the SDSS calibration stars (Cool\net al., GCN 7540) of the two epochs of combined images in R is following\n\nT0+         exposure    R_mag\nMid time\n\n0.575 d   4x900 s     21.05 +/-0.1\n0.654 d   4x900 s     21.28 +/-0.1\n\nTaking into account previous observation (R=20.4+/-0.2 at 9.4 hours after\nburst, Wang et al., GCN 7550)  and  our observations one can suggest the\nsteepening of a power law decay index up to ~ 1.5 between 9.4 and 15.7 hours\nafter burst.",
  "circularId": 7556,
  "createdOn": 1207009104000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB080330: optical observations",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 080330"
}