MASTER: new Dwarf Novae discovery

ATel #7326; 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, E. Popova, S. Shurpakov (Lomonosov Moscow State University, SAI), S. Potter, A. Kniazev, M. Kotze (The 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)
on 31 Mar 2015; 13:22 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

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MASTER OT J160724.95-741542.0 discovery - new Dwarf Nova

MASTER-SAAO auto-detection system ( Lipunov et al., Advances in Astronomy, MASTER Global Robotic Net, 2010 ) discovered OT source at (RA, Dec) = 16h 07m 24.95s -74d 15m 42.0s on 2015-03-30.92497 UT.
The OT unfiltered magnitude is 18.0m (limit 19.0m).
There are 3 images with OT in MASTER-SAAO database at this night. We have reference image without OT on 2015-03-03.954UT with m_lim=18.4, and on 2015-01-12.06541 UT with 19.1 unfiltered magnitude limit.
There is no any source inside 5" in VIZIER database.
The discovery and reference images of new Dwarf Nova are available at: http://master.sai.msu.ru/static/OT/160724.95-741542.0.png
Spectral observations are required.

MASTER OT J215602.73+470903.2 discovery - new Dwarf Nova

MASTER-Tunka auto-detection system discovered OT source at (RA, Dec) = 21h 56m 02.73s +47d 09m 03.2s on 2015-03-27.770UT.
The OT unfiltered magnitude is 17.2m. There are 3 images with OT. We have reference image without OT on 2015-02-18.871 UT with 18.0 unfiltered magnitude limit.
There is no minor planet at this place. There is no any source inside 5" in VIZIER database, NSVS and CRTS surveys.
The discovery and reference unfiltered images are available at: http://master.sai.msu.ru/static/OT/MASTERJ215602.73+470903.2.jpg
Spectral observations are required.

MASTER Global Robotic Net