TITLE:   GCN CIRCULAR
NUMBER:  26006
SUBJECT: ANTARES 191011A: MASTER optical observation befor and after trigger
DATE:    19/10/14 18:12:43 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>

V. Lipunov, O.Gress, E. Gorbovskoy, V.Kornilov, N.Tyurina, F.Balakin,P.Balanutsa,A.Kuznetsov, V.Vladimirov, D. Vlasenko,
I.Gorbunov, D. Zimnukhov, V.Senik, T.Pogrosheva, D.Kuvshinov(Lomonosov Moscow State University, SAI, Physics Department),
R. Rebolo, M. Serra(The Instituto de Astrofisica de Canarias),
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),
D. Buckley(South African Astronomical Observatory),
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 Global Robotic Net (http://observ.pereplet.ru, Lipunov et al.,2010, Advances in Astronomy, vol.2010, 30L)
observed ANTARES 191011A
(Turley et al. GCN 26005, Ttrig=2019-10-11 15:54:32UT,Tnotice=2019-10-14 14:18:07UT,RA,Dec(2000)=03:19:51.8 +18:48:27 +-0.4d )
at MASTER-IAC and MASTER-Kislovodsk during MASTER own survey.

MASTER didn't receive this alert through usual GCN socket system.

MASTER-IAC robotic telescope   located in Spain, IAC Teide Observatory, 
observed  Antares 191011A alert errorbox during own survey 1 day 24617 sec after trigger time at
2019-10-12 22:44:49 UT, with upper limit up to  18.4 mag on single images .
The observations began at zenit distance = 60 deg. The sun  altitude  was -54.1 deg.

MASTER-Kislovodsk robotic telescope  located in Russia, Kislovodsk Solar Station of Pulkovo observatory,
observed Antares 191011A alert errorbox  1 days 28366 sec after trigger time at 
2019-10-12 23:47:18 UT, with upper limit up to  18.2 mag.
The observations began at zenit distance = 26 deg. The sun  altitude  was -38.6 deg.
The galactic latitude b = -60 deg., longitude l = 98 deg.

Also we have a several images (4 square degrees) ~14 hours before trigger 
time at MASTER-IAC with upper limit up to 18.8, made during MASTER own survey.

We obtained the following upper limits:

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000) _         |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|_____________________________________|_____|_______|______|________
   -50486 | 2019-10-11 01:52:35 |          MASTER-IAC | (03h 24m 41.758s ,+17d 56m 09.20s) |   C |    60 | 18.8 |
   -50486 | 2019-10-11 01:52:36 |          MASTER-IAC | (03h 16m 09.822s ,+18d 00m 05.97s) |   C |    60 | 18.7 |
   -50047 | 2019-10-11 01:59:54 |          MASTER-IAC | (03h 27m 10.598s ,+19d 56m 45.10s) |   C |    60 | 18.8 |
   -50047 | 2019-10-11 01:59:54 |          MASTER-IAC | (03h 18m 32.410s ,+20d 00m 35.27s) |   C |    60 | 18.6 |
   111048 | 2019-10-12 22:44:49 |          MASTER-IAC | (03h 24m 45.696s ,+17d 57m 08.38s) |   C |    60 | 17.7 |
   111078 | 2019-10-12 22:44:49 |          MASTER-IAC | (03h 24m 45.697s ,+17d 57m 08.49s) |   C |   120 | 18.3 |  Coadd
   111049 | 2019-10-12 22:44:50 |          MASTER-IAC | (03h 16m 13.118s ,+18d 00m 55.10s) |   C |    60 | 17.5 |
   111079 | 2019-10-12 22:44:50 |          MASTER-IAC | (03h 16m 13.118s ,+18d 00m 55.06s) |   C |   120 | 18.2 |  Coadd
   111185 | 2019-10-12 22:47:06 |          MASTER-IAC | (03h 18m 31.476s ,+20d 00m 25.29s) |   C |    60 | 17.6 |
   111215 | 2019-10-12 22:47:06 |          MASTER-IAC | (03h 18m 31.481s ,+20d 00m 25.33s) |   C |   120 | 18.3 |  Coadd
   111185 | 2019-10-12 22:47:06 |          MASTER-IAC | (03h 27m 10.213s ,+19d 56m 38.51s) |   C |    60 | 17.9 |
   111215 | 2019-10-12 22:47:06 |          MASTER-IAC | (03h 27m 10.214s ,+19d 56m 38.66s) |   C |   120 | 18.4 |  Coadd
   113619 | 2019-10-12 23:27:40 |          MASTER-IAC | (03h 16m 10.561s ,+18d 00m 52.50s) |   C |    60 | 17.8 |
   113619 | 2019-10-12 23:27:40 |          MASTER-IAC | (03h 24m 44.154s ,+17d 57m 10.10s) |   C |    60 | 18.0 |
   113757 | 2019-10-12 23:29:59 |          MASTER-IAC | (03h 18m 29.321s ,+20d 00m 31.83s) |   C |    60 | 17.9 |
   113757 | 2019-10-12 23:29:59 |          MASTER-IAC | (03h 27m 09.160s ,+19d 56m 49.43s) |   C |    60 | 18.1 |
   114797 | 2019-10-12 23:47:18 |   MASTER-Kislovodsk | (03h 26m 21.586s ,+18d 04m 20.23s) |   C |    60 | 17.7 |
   114797 | 2019-10-12 23:47:18 |   MASTER-Kislovodsk | (03h 17m 35.971s ,+18d 29m 50.56s) |   C |    60 | 18.0 |
   114894 | 2019-10-12 23:48:56 |   MASTER-Kislovodsk | (03h 19m 58.458s ,+20d 28m 33.57s) |   C |    60 | 18.2 |
Filter C is a clear (unfiltred) band.

Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=1166369

The observation,reduction, analysys will be continued.

This message can be cited.