TITLE: GCN CIRCULAR NUMBER: 26280 SUBJECT: IceCube-191122A: Global MASTER-Net observations report DATE: 19/11/23 11:40:20 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-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) was pointed to the IceCube-191122A (GCN 26276) errorbox 23 sec after notice and 55 sec after trigger time at 2019-11-22 22:46:06 UT, with upper limit up to 19.9 mag. The observations began at zenith distance = 46 deg. The sun altitude is -37.6 deg. MASTER-Tavrida robotic telescope located in Russia (Lomonosov MSU, SAI Crimea astronomical station) was pointed to the IceCube-191122A errorbox 28 sec after notice and 60 sec after trigger time at 2019-11-22 22:46:10 UT, with upper limit up to 15.8 mag. The observations began at zenith distance = 62 deg. The sun altitude is -61.3 deg. MASTER-IAC robotic telescope located in Spain (IAC Teide Observatory) was pointed to the IceCube-191122A errorbox 54 sec after notice and 87 sec after trigger time at 2019-11-22 22:46:38 UT, with upper limit up to 19.9 mag. The observations began at zenith distance = 28 deg. The sun altitude is -61.1 deg. The galactic latitude b = -59 deg., longitude l = 155 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1203628 The observation and reduction will continue. The message may be cited