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MASTER discovery: PSN in PGC877124 and high amplitude dwarf nova

ATel #9540; T. Pogrosheva, O. Gress, V. Shumkov, V. Lipunov (Lomonosov MSU), D. Buckley(SAAO),R. Rebolo Lopez, M. Serra Ricart (IAC), Podesta R. (OAFA), Levato H.(ICATE), N. Tiurina, E. Gorbovskoy, P. Balanutsa, A. Kuznetsov, V. Kornilov, V. Vladimirov, D. Kuvshinov (Lomonosov MSU, SAI), S. Potter(SAAO), N. Lodieu (IAC), Saffe C.(ICATE), Lopez C., Podesta F.(OAFA), J. Rabinovich, K. Ivanov, N. Budnev (ISU)
on 24 Sep 2016; 07:32 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

Subjects: Optical, Cataclysmic Variable, Supernovae, Transient, Variables

MASTER OT J013415.01-174843.9 discovery - PSN in 2.1"E,6.1"S of PGC877124

MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 01h 34m 15.01s -17d 48m 43.9s on 2016-09-24.00260 UT.
The OT unfiltered magnitude is 17.5m (mlim=19.8m).
The OT is seen in 2 images. There is no minor planet at this place. We have reference image without OT on 2015-05-27.14317 UT with unfiltered magnitude limit 19.8m.
This PSN is in 2.1"E,6.1"S of PGC877124 (disc galaxy)
Spectral observations are required.
The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/013415.01-174843.9.png

MASTER OT J173656.20-552020.8 discovery - dwarf nova outburst, Ampl>4.9
MASTER-SAAO auto-detection system discovered OT source at (RA, Dec) = 17h 36m 56.20s -55d 20m 20.8s on 2016-09-20.89716 UT.
The OT unfiltered magnitude is 17.1m (mlim=18.4m).
The OT is seen in 2 images. There is no minor planet at this place.There is no any sources in VIZIER database (22 POSS limit and more then 4.9 mag current outburst)
We have reference image on 2015-03-11.09073 UT with unfiltered mlim=18.7m.
Spectral observations are required.
The discovery and reference images are http://master.sai.msu.ru/static/OT/173656.20-552020.8.png

MASTER OT J152222.76-082848.7 discovery - ampl>3.6m
MASTER-SAAO auto-detection system discovered OT source at (RA, Dec) = 15h 22m 22.76s -08d 28m 48.7s on 2016-09-22.72866 UT.
The OT unfiltered m=18.4m (mlim=19.5m).
The OT is seen in 4 image. There is no minor planet at this place. We have reference image without OT on 2015-04-30.88122 UT with unfiltered magnitude limit 19.7m.
There is GSC2.3.2 star with blue jmag=19.15(22m POSS limit),so current outburst amplitude is more then 3.6m
Spectral observations are required.
The discovery and reference images are http://master.sai.msu.ru/static/OT/152222.76-082848.7.png

MASTER OT J010433.60-015902.9 discovery -new high amplitude dwarf nova outburst, aml>6.5m,no VIZIER sources
MASTER-IAC auto-detection system discovered OT source at (RA, Dec) = 01h 04m 33.60s -01d 59m 02.9s on 2016-09-22.04625 UT.
The OT unfiltered magnitude is 18.0m (lim=18.9m).
The OT is seen in 2 images. MASTER-SAAO reobserved it on 2016-09-23 20:36:12.507UT with m_OT=17.8 (unfiltered). We have reference image without OT on 2015-12-13.99037 UT with unfiltered magnitude limit 20.6m, on 2016-09-08 03:00:27 with m_lim=20.1.
There are no any sources inside 4", it means 22m POSS limit(Ampl>4m) and red~24.5 Sloan limit(Ampl>6.5m). This OT is not red SDSS star in 4.5" (too far to be our source and the ampl of outburst and its duration(several days) is not the feature of red giant star or red dwarf flare).
Spectral observations are required.
The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/010433.60-015902.9.png

MASTER Global Robotic Net