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MASTER-SAAO and MASTER-Tunka: 2 new CVs.

ATel #7016; P. Balanutsa, V. Lipunov, E. Gorbovskoy (SAI MSU), D. Buckley (SAAO), V. Kornilov, N. Tiurina, D. Denisenko, V. Chazov, A. Kuznetsov, V. Vladimirov (Lomonosov Moscow State University, SAI), S. Potter, A. Kniazev, M. Kotze (South African Astronomical Observatory), O. Gress, K. Ivanov, N. Budnev, S. Yazev, V. Poleshchuk, E. Konstantinov, O. Chuvalaev (Irkutsk State University), A. Tlatov, D. Dormidontov, V. Senik, A. Parkhomenko (Kislovodsk solar station of the Pulkovo observatory RAS), V. Yurkov, Y. Sergienko, A. Gabovich (Blagoveshchensk Educational University), V. Krushinsky, I. Zalozhnih, A. Popov, A. Bourdanov (Ural Federal University), V. Shumkov, S. Shurpakov (MASTER team members)
on 2 Feb 2015; 18:03 UT
Distributed as an Instant Email Notice Transients
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

Subjects: Optical, Cataclysmic Variable, Transient, Variables

MASTER OT J130224.24-472527.9: possible new CV

MASTER-SAAO auto-detection system discovered OT source at (RA, Dec) = 13h 02m 24.24s -47d 25m 27.9s on 2015-02-02.015 UT (See MASTER project description at Lipunov et. al., 2010, MASTER Robotic Net, Advances in Astronomy, vol. 2010 , pp. 1-7 . The OT unfiltered magnitude is 18.0m (limit is 18.7m).

There are 5 images with OT . There is no minor planet at this place, and no any objects presents in Vizier's catalogs inside 10".

We have reference image without OT on 2015-01-11.964 UT with 19.0m unfiltered magnitude limit.

The discovery and reference images are available at http://master.sai.msu.ru/static/OT/MASTERJ130224.24-472527.9.png

Spectral observations are required.

MASTER OT J175842.77+313725.7 : possible new CV

MASTER-Tunka auto-detection system discovered OT source at (RA, Dec) = 17h 58m 42.77s +31d 37m 25.7s on 2015-01-28.90134 UT. The OT unfiltered magnitude is 18.4m (limit is 19.3m).

There are 5 images with OT.

There is no minor planet at this place. There is GAIA source at this place with magRF=20.633.

We have reference image without OT on 2011-04-05.789 UT with 20.2 unfiltered magnitude limit.

MASTER-Tunka discovery and reference images are available at http://master.sai.msu.ru/static/OT/MASTERJ175842.77+313725.png

Spectral observations are required.

List of Optical Transients discovered by MASTER

Global MASTER Net