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MASTER: CV and correction

ATel #10928; V. Lipunov, T. Pogrosheva, V. Gorelkina (Lomonosov MSU), R. Podesta, F. Podesta (OAFA), H. Levato, C. Saffe (ICATE), E. Gorbovskoy, V. Kornilov, N. Tiurina, V. Shumkov, P. Balanutsa, I. Gorbunov, V. Vladimirov, A. Kuznetsov, D. Zimnuhov, D. Kuvshinov (Lomonosov MSU)
on 5 Nov 2017; 10:49 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

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

MASTER OT J031444.34-471210.0 detection - dwarf nova outburst, ampl>5.2m

MASTER-OAFA auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L )
discovered OT source at (RA, Dec) = 03h 14m 44.34s -47d 12m 10.0s on 2017-11-03.21736 UT.

The OT unfiltered magnitude is 17.1m (mlim=18.6m).
The OT is seen in 2 images (inspection of Fermi alert). There is no minor planet at this place.
We have reference images without OT on 2016-08-31.39912 UT with unfiltered magnitude limit 20.7m (MASTER-OAFA), on 2017-10-12 02:57:02 with mlim=19.6 and 2016-11-19 21:07:11UT mlim=20.8 (MASTER-SAAO).
There is Galex source in 2.5" and in 0.17" USNO-B1 star with B2=23.20, R2=22.10 in 1985 (MASTER W=0.2B+0.8R by USNO-B1), it means >5.2m current outburst amplitude.
The discovery and reference images are available at
http://master.sai.msu.ru/static/OT/031444.34-471210.0.png

CORRECTION TO ATEL #10927
After the further analysis, the optical sources at (RA, Dec) = 07h 36m 34.33s -08d 27m 15.7s was artefact, not real.

MASTER Global Robotic Net