{
  "bibcode": "2019GCN.25928....1M",
  "body": "E. Mazaeva (IKI), V. Rumyantsev (CrAO),  A. Pozanenko (IKI),   A. \nVolnova (IKI), S. Belkin (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 starting on Oct. 01 (UT) 19:30:53. We took \nseveral images in B,R filters  under good conditions and mean seeing of \n1.5 arcsec. Both optical transients are clearly visible in separate images.\n\nPreliminary photometry of the optical transients   is following\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\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\n\nThe photometry for AT2019rpj is based on the stars:\nSDSS-DR12_id RA Dec R(Lupton) err B(Lupton) err\nJ223926.51+313057.4    339.860475    +31.515949    17.94    0.02 \n19.23    0.02\nJ223929.26+313022.7    339.871951    +31.506316    16.89    0.02 \n18.52    0.01\nJ223919.69+312904.5    339.832062    +31.484605    18.69    0.02 \n19.83    0.02\nJ223916.31+313047.2    339.817967    +31.513116    18.71    0.02 \n19.97    0.02\n\nThe photometry for AT2019rpn is based on the stars:\nPan-STARRS_id RA Dec R(Lupton) err B(Lupton) err\n153053199373132992    319,937282460    +37,543645500    15.64    0.01 \n16.79    0.01\n153013199432441728    319,943228690    +37,509269790    17.25    0.01 \n18.50    0.01\n153013199414348544    319,941391010    +37,514951160    17.04    0.01 \n18.44    0.01\n153003199240135584    319,924010430    +37,504130480    16.52    0.01 \n17.89    0.01\n153043199658230976    319,965800600    +37,533607760    16.10    0.01 \n17.57    0.01",
  "circularId": 25928,
  "createdOn": 1570043699000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "LIGO/Virgo S190930t: AT2019rpn, AT2019rpj CrAO optical photometry",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "LIGO/Virgo S190930t"
}