TITLE:   GCN CIRCULAR
NUMBER:  20740
SUBJECT: LIGO/Virgo G275404: MASTER Tunka OT detection
DATE:    17/02/25 20:43:18 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov2007@gmail.com>

V.M.  Lipunov, E. Gorbovskoy, N.Tyurina, V.Shumkov,
  P.Balanutsa, V.G. O.Gress, Kornilov, A.Kuznetsov, M.I.Panchenko, A.V.Krylov, 
I.Gorbunov
Lomonosov Moscow State University, Sternberg Astronomical Institute

N.M. Budnev, O. Gress, K. Ivanov, S.Yazev
Irkutsk State University

V.Yurkov, Yu.Sergienko, A.Gabovich
Blagoveschensk Educational State University, Blagoveschensk

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

MASTER OT J173532.70+103810.5 - possble new CV or?

MASTER-Tunka auto-detection system discovered OT source at (RA, Dec) = 17h
35m 32.70s +10d 38m 10.5s on 2017-02-25.80727 UT. (see GCN 20738)
The OT magnitude in 'C' filter is 15.4m (limit 16.0m).

The OT is seen in 2 images. There is no minor planet at this place.

We have reference image without OT on 2015-01-27.94672 UT with magnitude
limit in 'C' filter 19.8m.

Spectral observations are required.