//////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 27717 SUBJECT: Baksan Neutrino Observatory Alert 200511.76: Global MASTER-Net observations report DATE: 20/05/11 21:00:17 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-IAC robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Spain (IAC Teide Observatory) started inspect of the Baksan Neutrino Observatory Alert 200511.76 (trigger No 1639937477,07h 39m 12.00s , -34d 18m 00.0s, R=3) errorbox 8087 sec after notice time and 8634 sec after trigger time at 2020-05-11 20:35:11 UT, with upper limit up to 16.7 mag. Observations started at twilight. The observations began at zenith distance = 73 deg. The sun altitude is -11.3 deg. The galactic latitude b = -6 deg., longitude l = 249 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1354319 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 8664 | 2020-05-11 20:35:11 | MASTER-IAC | (07h 55m 19.93s , -31d 57m 15.6s) | C | 60 | 16.3 | 8664 | 2020-05-11 20:35:11 | MASTER-IAC | (07h 45m 48.59s , -31d 53m 07.8s) | C | 60 | 16.0 | 8780 | 2020-05-11 20:37:07 | MASTER-IAC | (07h 45m 31.11s , -29d 58m 42.0s) | C | 60 | 16.4 | 8780 | 2020-05-11 20:37:07 | MASTER-IAC | (07h 36m 11.25s , -29d 54m 35.1s) | C | 60 | 15.8 | 8898 | 2020-05-11 20:39:05 | MASTER-IAC | (07h 56m 31.66s , -33d 54m 57.6s) | C | 60 | 15.6 | 9020 | 2020-05-11 20:41:06 | MASTER-IAC | (07h 55m 25.63s , -31d 59m 01.0s) | C | 60 | 16.2 | 9020 | 2020-05-11 20:41:06 | MASTER-IAC | (07h 45m 53.83s , -31d 54m 56.0s) | C | 60 | 15.7 | 9144 | 2020-05-11 20:43:10 | MASTER-IAC | (07h 45m 27.71s , -29d 57m 53.4s) | C | 60 | 16.7 | 9144 | 2020-05-11 20:43:10 | MASTER-IAC | (07h 36m 07.55s , -29d 53m 49.3s) | C | 60 | 16.0 | 9264 | 2020-05-11 20:45:11 | MASTER-IAC | (07h 56m 34.27s , -33d 55m 03.8s) | C | 60 | 16.1 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.