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MASTER: 2 Dwarf Novae discovery.

ATel #7170; V. Shumkov, V. Lipunov, E. Gorbovskoy (Lomonosov MSU), D. Buckley (SAAO), S. Antipin, P. Balanutsa, N. Tiurina , V. Kornilov, A. Kuznetsov, V. Chazov, V. Vladimirov (Lomonosov Moscow State University, SAI), S. Potter, A. Kniazev, M. Kotze (The South African Astronomical Observatory), N. Budnev, O. Gress, K. Ivanov, 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), S. Shurpakov (MASTER team)
on 3 Mar 2015; 09:33 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

Subjects: Optical, Request for Observations, Cataclysmic Variable, Transient, Variables

MASTER OT J075535.88-670013.4 discovery - possible Dwarf Nova

MASTER-SAAO auto-detection system ( Lipunov et al., Advances in Astronomy, MASTER Global Robotic Net, 2010 ) discovered OT source at (RA, Dec) = 07h 55m 35.88s -67d 00m 13.4s on 2015-03-02.91402 UT.

The OT unfiltered magnitude is 17.0m (the limit is 18.8m).

The OT is seen in 3 images.

There is no minor planet at this place. There is no any source in VIZIER database in this place.

We have reference image without OT on 2014-12-23.04310 UT with 19.8 unfiltered magnitude limit in MASTER-SAAO database.

The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/075535.88-670013.4.png

Spectral observations are required.

MASTER OT J081809.50-634348.3 discovery - possible Dwarf Nova

MASTER-SAAO auto-detection system discovered OT source at (RA, Dec) = 08h 18m 09.50s -63d 43m 48.3s on 2015-03-02.91821 UT.

The OT unfiltered magnitude is 15.8m (the limit is 18.5m).

The OT is seen in 3 images. There is no minor planet and any source in VIZIER database at this place.

We have reference image without OT on 2014-12-21.95863 UT with 19.4 unfiltered magnitude limit.

The discovery and reference images are available at:http://master.sai.msu.ru/static/OT/081809.50-634348.3.png

Spectral observations are required.

List of Optical Transients discovered by MASTER

MASTER Global Robotic Net