{
  "bibcode": "2019GCN.24236....1L",
  "body": "V. Lipunov, E. Gorbovskoy, V.Kornilov, D.Kuvshinov, N.Tyurina, P.Balanutsa,\nA.Kuznetsov, V.V.Chazov, D. Vlasenko\nLomonosov Moscow State University,\nSternberg Astronomical Institute, Moscow State University\n\nA. Tlatov, V.Senik, A.V. Parhomenko, D. Dormidontov\nKislovodsk Solar Station of the Pulkovo Observatory\n\nK. Ivanov, O. Gres, N.M. Budnev, S. Yazev, O. Chuvalaev, V. Poleshchuk\nIrkutsk State University\n\nV. Yurkov, A. Gabovich, Yu. Sergienko\nBlagoveschensk Educational State University, Blagoveschensk\n\nR. Podesta, Carlos Lopez and F. Podesta\nObservatorio Astronomico Felix Aguilar (OAFA)\n\nHugo Levato and Carlos Saffe\nInstituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)\n\nR. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres\nThe Instituto de Astrofisica de Canarias\n\nD. Buckley, S. Potter, A. Kniazev, M. Kotze\nSouth African Astronomical Observatory\n\n\n\nMASTER-Amur robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Blagoveshchensk State Pedagogical University) started inspect of the LIGO/Virgo S190426c errorbox  3232 sec after trigger time at 2019-04-26 16:15:47 UT, with upper limit up to  18.4 mag. The observations began at zenit distance = 117 deg. The sun  altitude  is -25.7 deg. \n\nMASTER-Tunka robotic telescope  located in Russia (Applied Physics Institute, Irkutsk State University) started inspect of the LIGO/Virgo S190426c errorbox  3803 sec after trigger time at 2019-04-26 16:25:18 UT, with upper limit up to  19.5 mag. The observations began at zenit distance = 125 deg. The sun  altitude  is -24.9 deg. \n\nThe galactic latitude b = -60 deg., longitude l = 98 deg.\n\n\nReal time updated cover map and OT discovered available here: \nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id=10199\n\nWe obtain a following upper limits.  \n\nTmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n    3323 | 2019-04-26 16:15:47 |         MASTER-Amur | (  2h 50m 29.91s , +85d 53m 31.28s) |   C |   180 | 18.3 |        \n    3556 | 2019-04-26 16:19:40 |         MASTER-Amur | ( 14h 14m 37.41s , +85d 56m 38.95s) |   C |   180 | 18.1 |        \n    3768 | 2019-04-26 16:23:13 |         MASTER-Amur | (  0h 25m 31.78s , +85d 27m 16.37s) |   C |   180 | 18.4 |        \n    3893 | 2019-04-26 16:25:18 |        MASTER-Tunka | ( 22h 27m 30.53s , +83d 55m 49.49s) |   C |   180 | 19.5 |        \nFilter C is a clear (unfiltred) band. \n\n\nThe observation and reduction will continue. \nThe message may be cited.",
  "circularId": 24236,
  "createdOn": 1556296786000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "LIGO/Virgo S190426c Global MASTER-Net observations report",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>",
  "eventId": "LIGO/Virgo S190426c"
}