{
  "bibcode": "2017GCN.22199....1L",
  "body": "V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, D.Kuvshinov, A.V.Krylov,\nI.Gorbunov, P.Balanutsa, A.Kuznetsov, V.V.Chazov, D. Vlasenko\nLomonosov Moscow State University, Sternberg Astronomical Institut of MSU\n\nD.Buckley, S. Potter, A.Kniazev, M.Kotze\nSouth African Astronomical Observatory\n\nR. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres\nThe Instituto de Astrofisica de Canarias\n\nR.Podesta, C.Lopez, F. Podesta Observatorio Astronomico Felix Aguilar (OAFA),\nNational University of San Juan, Argentina\n\nH. Levato, C. Saffe\nInstituto de Ciencias Astronomicas,de la Tierra y del Espacio (ICATE),\nSan Juan, Argentina\n\nO.Gres, K.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk,\nIrkutsk State University\n\nV.Yurkov, Yu.Sergienko\nBlagoveschensk Educational State University, Blagoveschensk\n\nA. Tlatov, V.Senik, A.V. Parhomenko, D. Dormidontov\nKislovodsk Solar Station of the Pulkovo Observatory\n\nMASTER-SAAO telescope observed Swift GRB171205A (D'Elia et al., GCN Circ. \n22177) since 2017-12-06 23:53:47UT.\n\nThere were 20 images with 180s exposition in B and unfiltered (W=0.2B+0.8R \ncalibrated by USNO-B1) .\n\nMASTER-SAAO auto-detection system detected optical transient ((Izzo et \nal. GCN 22180; Emery et al. GCN 22181; Butler et al. GCN 22182; Mao et al. \nGCN 22186; Choi et al. GCN 22188; Melandri et al. GCN 22189; Steeghs et \nal. GCN 22190; Cobb et al. GCN 22192, Schmidl et al. GCN22198) several \nfilters. The unfriltered magnitude is about ~ 19.4 mag .\n\nWe note that absolute magnitude is about -16.5.\n\nThe dicovery image is available at \nhttp://observ.pereplet.ru/images/MASTERGRB171205A.jpg\n\n\nThis message can be cited.",
  "circularId": 22199,
  "createdOn": 1512664525000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "GRB 171205A: MASTER-SAAO optical observations of unusual OT",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>",
  "eventId": "GRB 171205A"
}