TITLE: GCN CIRCULAR NUMBER: 26217 SUBJECT: LIGO/Virgo S191110x: Global MASTER-Net observations report DATE: 19/11/10 18:30:16 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, F.Balakin, V.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva, D.Kuvshinov (Lomonosov Moscow State University, SAI, Physics Department), R. Podesta, C.Lopez, F. Podesta, C.Francile (Observatorio Astronomico Felix Aguilar OAFA), H.Levato (Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE), R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias), D. Buckley (South African Astronomical Observatory), O.A. Gres, N.M. Budnev, O.Ershova (Irkutsk State University, API), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), V. Yurkov, A. Gabovich, Yu. Sergienko (Blagoveschensk Educational State University) MASTER-Kislovodsk robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the LIGO/Virgo S191110x errorbox 561 sec after trigger time at 2019-11-10 18:18:03 UT, with upper limit up to 15.2 mag. The observations began at zenith distance = 87 deg. The sun altitude is -48.0 deg. The galactic latitude b = -0 deg., longitude l = 206 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/ligo_1.php?id=10903 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 617 | 2019-11-10 18:18:03 | MASTER-Kislovodsk | (06h 30m 02.26s , +05d 40m 55.6s) | C | 110 | 15.1 | 617 | 2019-11-10 18:18:03 | MASTER-Kislovodsk | (06h 38m 15.81s , +05d 10m 19.4s) | C | 110 | 14.0 | 762 | 2019-11-10 18:20:14 | MASTER-Kislovodsk | (06h 30m 06.66s , +05d 40m 00.9s) | C | 140 | 15.2 | 762 | 2019-11-10 18:20:14 | MASTER-Kislovodsk | (06h 38m 18.78s , +05d 09m 46.8s) | C | 140 | 14.6 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.