TITLE: GCN CIRCULAR NUMBER: 26731 SUBJECT: LIGO/Virgo S200114f: Global MASTER-Net observations report DATE: 20/01/14 02:24:23 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, D. Cheryasov (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-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S200114f errorbox 380 sec after trigger time at 2020-01-14 02:14:38 UT, with upper limit up to 18.2 mag. The observations began at zenith distance = 58 deg. The sun altitude is -26.5 deg. MASTER-Kislovodsk robotic telescope located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the LIGO/Virgo S200114f errorbox 381 sec after trigger time at 2020-01-14 02:14:39 UT, with upper limit up to 17.5 mag. The observations began at zenith distance = 69 deg. The sun altitude is -26.1 deg. The galactic latitude b = -60 deg., longitude l = 98 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/ligo_1.php?id=11224 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 421 | 2020-01-14 02:14:38 | MASTER-OAFA | (07h 21m 28.46s , +17d 44m 04.5s) | C | 80 | 18.3 | 421 | 2020-01-14 02:14:39 | MASTER-Kislovodsk | (07h 28m 48.40s , +16d 54m 16.5s) | C | 80 | 17.4 | 421 | 2020-01-14 02:14:39 | MASTER-Kislovodsk | (07h 20m 31.03s , +17d 20m 26.8s) | C | 80 | 17.3 | 527 | 2020-01-14 02:16:19 | MASTER-Kislovodsk | (07h 28m 45.30s , +16d 53m 07.0s) | C | 90 | 17.5 | 527 | 2020-01-14 02:16:19 | MASTER-Kislovodsk | (07h 20m 28.19s , +17d 19m 14.5s) | C | 90 | 17.4 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.