TITLE: GCN CIRCULAR NUMBER: 20697 SUBJECT: LIGO/Virgo G274296: Global MASTER Net two OTs detection DATE: 17/02/19 08:50:42 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V.M. Lipunov, P.Balanutsa, V.Shumkov, E. Gorbovskoy, N.Tyurina, V.G. O.Gress, Kornilov, A.Kuznetsov, M.I.Panchenko Lomonosov Moscow State University, Sternberg Astronomical Institute N.M. Budnev, O. Gress, K. Ivanov, S.Yazev Irkutsk State University R.Podesta, C.Lopez, F. Podesta Observatorio Astronomico Felix Aguilar (OAFA) , National University of San Juan, Argentina H. Levato, C. Saffe Instituto de Ciencias Astronomicas,de la Tierra y del Espacio (ICATE), San Juan, Argentina D.Buckley, S. Potter, M. Kotze, South African Astronomical Observatory R. Rebolo, M. Serra-Ricart, G. Israelian, N.Lodiu The Instituto de Astrofisica de Canarias A. Tlatov, V.Sennik Kislovodsk Solar Station of the Pulkovo Observatory V.Yurkov, Yu.Sergienko, A.Gabovich Blagoveschensk Educational State University, Blagoveschensk MASTER-Tunka (Sibiriya, Baykal, -30C)detected two additional OTs during LIGO/VIRGO alert inspection (Peter Shawhan, GCN 20689; Lipunov et al., GCN 20696). MASTER OT J111410.86+383448.2 - AGN. MASTER-Tunka auto-detection system discovered OT source at (RA, Dec) = 11h 14m 10.86s +38d 34m 48.2s on 2017-02-18.77808 UT. The OT unfiltered magnitude is 18.6m (limit 19.6m). The OT is seen in 2 images. There is no minor planet at this place. We have reference image without OT on 2011-04-23.66288 UT with unfiltered magnitude limit 20.2m. There is object SDSS DR10 catalogue of candidate quasars (Brescia+, 2015, 2015MNRAS.450.3893B ) Spectral observations are required. The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/111410.86383448.2.png MASTER OT J104314.39+241518.4 - PSN in the SDSS galaxy with ~4 arcsec offset. MASTER-Tunka auto-detection system discovered OT source at (RA, Dec) = 10h 43m 14.39s +24d 15m 18.4s on 2017-02-18.73677 UT. The OT unfiltered magnitude is 18.8m (limit 19.3m). The OT is seen in 1 image. There is no minor planet at this place. We have reference image without OT on 2011-03-30.69752 UT with unfiltered magnitude limit 20.4m. THERE is SDSS galaxy J104314.36+241522.4 in 4 arcsec from OT. Spectral observations are required. The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/104314.39241518.4.png