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MASTER-OAFA discovery: new bright OT

ATel #9647; V. Shumkov, P. Balanutsa, T. Pogrosheva, V. Lipunov (Lomonosov MSU), R. Podesta (OAFA), H. Levato (ICATE), D. Buckley (SAAO), E. Gorbovskoy, N. Tiurina, A. Kuznetsov, V. Kornilov, V. Chazov, D. Vlasenko, V. Vladimirov, O. Gress, K. Ivanov (Lomonosov Moscow State University, SAI), C. Lopez, F. Podesta (Observatorio Astronomico Felix Aguilar, Argentina), C. Saffe (Instituto de Ciencias Astronomicas, de la Tierra y del Espacio, Argentina), S. Potter (SAAO)
on 19 Oct 2016; 09:10 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

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

MASTER OT J180606.62-621331.3 discovery - bright dwarf nova outburst, Ampl>5.8m, no VIZIER

MASTER-OAFA auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 18h 06m 06.62s -62d 13m 31.3s on 2016-10-19.03627 UT.
The OT unfiltered m=16.2m (limit 19.1m).
The OT is seen in 3 images. There is no minor planet at this place.
There is no any sources in VIZIER database, it means22m POSS limit and more then 5.8mag amplitude of current outburst.
We have reference image without OT on 2016-08-02.08435 UT with unfiltered mlim=19.5m.
Spectral observations are required.
The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/MASTEROTJ180606.62-621331.3.jpg

MASTER OT J104518.05-592711.0 detection - long periodical variable star

MASTER-SAAO auto-detection system detected OT source at (RA, Dec) = 10h 45m 18.05s -59d 27m 11.0s on 2014-12-20.00168 UT with Johnson/Bessel Vmag=17.5m (Johnson/Bessel), mlim=18.5m.
The OT is seen in 4 image, images with LC are available http://master.sai.msu.ru/static/OT/MASTEROTJ104518.05-592711.0.jpg

List of Optical Transients discovered by MASTER

MASTER Global Robotic Net