{
  "bibcode": "2019GCN.25943....1M",
  "body": "E. Mazaeva (IKI),  A. Pozanenko (IKI),  V. Rumyantsev (CrAO), S. Belkin \n(IKI), A. Volnova (IKI)  report on behalf of larger GRB follow-up \ncollaboration:\n\nWe observed the ZTF19acbpqlh (AT2019rpn) reported by Stein et al. (GCN \n25899) and the ATLAS19wyn (AT2019rpj) optical transients with ZTSh 2.6m \ntelescope of CrAO observatory on Oct. 02 and Oct. 3.\n\nPreliminary photometry of the optical transients   is following\n(we repeat our photometry previously published in GCN 25928 in the table \nbelow for convenience)\n\nName,     UT start             T_mid Filter  Exp.     OT    err\n                                (MJD)         (s)\n\nAT2019rpj 2019-10-01 20:16:16  58757.84880 R 11*60   19.37   0.04\nAT2019rpj 2019-10-01 20:28:33  58757.85886 B 15*60   19.86   0.04\nAT2019rpj 2019-10-02 19:44:58  58758.82668 R 10*60   19.31   0.05\nAT2019rpj 2019-10-02 20:28:33  58758.83825 B 20*60   19.83   0.03\nAT2019rpj 2019-10-03 17:56:18  58759.75245 R 12*60   19.33   0.06\nAT2019rpj 2019-10-03 18:11:03  58759.76604 B 22*60   19.91   0.06\n\nAT2019rpn 2019-10-01 19:30:53  58757.81861 R 12*60   19.26   0.11\nAT2019rpn 2019-10-01 19:47:03  58757.83270 B 11*60   20.17   0.07\nAT2019rpn 2019-10-02 19:01:22  58758.79640 R 10*60   19.34   0.12\nAT2019rpn 2019-10-02 19:12:33  58758.80874 B 22*60   20.20   0.04\nAT2019rpn 2019-10-03 17:13:26  58759.72220 R 10*60   19.26   0.12\nAT2019rpn 2019-10-03 17:26:42  58759.73485 B 21*60   20.18   0.05\n\nThe photometry is based on the same stars reported by Mazaeva et al. \n(GCN 25928).\n\nThe color of AT2019rpj (B-R)  = 0.5 is not resemble of any object which \ncan be related to LVC OT counterpart, and the detection the AT2019rpj \nbefore S190930t (Smartt et al. GCN 25922),  exclude it from candidates.\nBased on the photometry, it can be seen that AT2019rpn does not rise for \nthree epochs (which is previously reported by Tan et al. (GCN 25916)) or \nis near a maximum.",
  "circularId": 25943,
  "createdOn": 1570206679000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "LIGO/Virgo S190930t: AT2019rpn, AT2019rpj CrAO continued optical photometry",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "LIGO/Virgo S190930t"
}