TITLE: GCN CIRCULAR NUMBER: 26014 SUBJECT: Baksan Neutrino Observatory Alert 191016.51: Global MASTER-Net observations report DATE: 19/10/16 22:21:48 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V. Lipunov, E. Gorbovskoy, N.Tyurina, V.Kornilov, P.Balanutsa, I.Gorbunov, D.Vlasenko, V.Vladimirov, A.Kuznetsov, A. Chasovnikov, V.Topolev, D.Kuvshinov, F.Balakin, V.A. Senik (Lomonosov Moscow State University, SAI, Physics Department), V.B. Petkov, M.M. Boliev, A.N. Kurenya, (Baksan Neutrino Observatory, Institute for Nuclear Research of RAS, Moscow, Russia), R. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres (The Instituto de Astrofisica de Canarias), D. Buckley (South African Astronomical Observatory), N.M. Budnev, O. Gress, O.Ershova (Applied Physics Institute, Irkutsk State University), V. Yurkov, A. Gabovich, Yu. Sergienko, D. Kobcev (Blagoveschensk Educational State University), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), R. Podesta, C. Lopez, C.Francile, F. Podesta (Observatorio Astronomico Felix Aguilar OAFA, San Juan National University), H.Levato (Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE SJNU) 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) started inspect of the Baksan Neutrino Observatory Alert 191016.51 (06h 08m 48.000s , -08d 24m 00.00s, R=3) errorbox 34218 sec after trigger time at 2019-10-16 21:49:27 UT, with upper limit up to 17.5 mag. The observations began at zenit distance = 73 deg. The sun altitude is -48.2 deg. MASTER-Kislovodsk robotic telescope located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the Baksan Neutrino Observatory Alert 191016.51 errorbox 34556 sec after trigger time at 2019-10-16 21:55:05 UT, with upper limit up to 17.8 mag. The observations began at zenit distance = 72 deg. The sun altitude is -53.6 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/observ.php?id=1167998 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 34248 | 2019-10-16 21:49:27 | MASTER-SAAO | (05h 53m 27.554s , -09d 58m 36.71s) | C | 60 | 17.2 | 34347 | 2019-10-16 21:51:06 | MASTER-SAAO | (05h 55m 51.116s , -11d 58m 28.66s) | C | 60 | 17.1 | 34586 | 2019-10-16 21:55:05 | MASTER-Kislovodsk | (06h 06m 26.085s , -07d 50m 19.70s) | C | 60 | 17.5 | 34586 | 2019-10-16 21:55:05 | MASTER-Kislovodsk | (06h 14m 35.923s , -08d 17m 26.65s) | C | 60 | 17.7 | 34677 | 2019-10-16 21:56:36 | MASTER-Kislovodsk | (06h 06m 23.196s , -07d 50m 51.46s) | C | 60 | 17.5 | 34677 | 2019-10-16 21:56:36 | MASTER-Kislovodsk | (06h 14m 33.104s , -08d 17m 58.89s) | C | 60 | 17.8 | 35230 | 2019-10-16 22:05:49 | MASTER-SAAO | (05h 53m 24.732s , -09d 58m 39.55s) | C | 60 | 17.5 | 35328 | 2019-10-16 22:07:27 | MASTER-SAAO | (06h 01m 36.333s , -09d 58m 09.74s) | C | 60 | 17.3 | 35426 | 2019-10-16 22:09:05 | MASTER-SAAO | (05h 55m 51.860s , -11d 57m 25.56s) | C | 60 | 17.5 | 35526 | 2019-10-16 22:10:45 | MASTER-SAAO | (06h 04m 02.246s , -11d 58m 06.97s) | C | 60 | 17.3 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.