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MASTER-SAAO: PSN in PGC152788 and OT

ATel #10074; P. Balanutsa, O. Gress, V. Lipunov (Lomonosov MSU),D. Buckley (SAAO), E. Gorbovskoy, N. Tiurina, A. Kuznetsov, V. Kornilov , V. Vladimirov, V. Chazov, D. Kuvshinov, T. Pogrosheva, V. Shumkov (Lomonosov Moscow State University, SAI)
on 13 Feb 2017; 21:05 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

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

MASTER OT J083256.92-035128.1 discovery - PSN in 4.6" of PGC152788

MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 08h 32m 56.92s -03d 51m 28.1s on 2017-02-11 22:13:06.767UT .
The OT unfiltered magnitude is 16.9m (mlim=19.8).
The OT is seen at 20 images. We have reference image on 2014-12-23.04911 UT with unfiltered mlim= 20.2m.
There is spiral PGC152788 in 4.6" of this OT .
Spectral observations are required.
The discovery and reference images are available at
"> http://master.sai.msu.ru/static/OT/MASTEROTJ083256.92-035128.1.jpg"> http://master.sai.msu.ru/static/OT/MASTEROTJ083256.92-035128.1.jpg

MASTER OT J081447.89-583624.2 discovery - possibly dwarf nova outburst, Ampl>5.1

MASTER-SAAO auto-detection system discovered OT source at (RA, Dec) = 08h 14m 47.89s -58d 36m 24.2s on 2017-02-13.77013 UT.
The OT unfiltered magnitude is 16.9m (mlim=18.7). The OT is seen at 2 images on 2017-02-13, and on image on 2017-02-12 22:31:13UT with the same m_OT. There is no minor planet at this place.
We have reference image on 2015-12-17.98883 UT with unfiltered mlim=20.3m.
There is no optical source in USNO-B1, it means 22mag limit for usual state and more then 5.1m of current outburst amplitude.
Spectral observations are required.
The discovery and reference images are available at: "> http://master.sai.msu.ru/static/OT/081447.89-583624.2.png"> http://master.sai.msu.ru/static/OT/081447.89-583624.2.png

List of Optical Transients discovered by MASTER

MASTER Global Robotic Net