{
  "bibcode": "2018GCN.22440....1M",
  "body": "E. Mazaeva (IKI),   R. Inasaridze (AbAO),  A. Pozanenko (IKI),  A. \nVolnova  (IKI), V. Ayvazian  (AbAO),  O. Kvaratskhelia (AbAO), G. \nInasaridze (AbAO),  I. Molotov (KIAM), report on behalf of larger GRB \nfollow-up collaboration:\n\nWe observed the field of the MAXI J1813-095 source (trigger=811167; ATel \n#11323 Kawase et al.) with AS-32 (0.7m). We obtained several unfiltered \nimages  starting on Feb. 22 (UT) 01:40:27. We do not detect any evident \nobject within XRT error circle (Beardmore  et al., GCN 22431). The only \none object which is visible in POSS2 in coordinates  (J2000) 18:13:33.84 \n  -09:31:54.5 +/-0.8 is also visible in our combined image. The \nmagnitude of the source is 18.92 +/- 0.12 and calibrated against nearby \nUSNO-B1.0 stars.\n\nThe field photometry is following\n\nDate        UT start  t-T0      Filter Exp.   OT      Err.  UL\n                      (mid, days)    (s)\n\n2018-02-22  01:40:27  0.08079   CR    25*60     n/d   n/d  20.2\n\nThe photometry is based on several USNO-B1.0 stars\nUSNO-B.1_id     R2\n0804-0407386    15.99\n0804-0407400    16.34\n0804-0407451    15.77",
  "circularId": 22440,
  "createdOn": 1519475709000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "MAXI J1813-095 source: AbAO optical observations",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>"
}