MASTER: 2 dwarf nova outburst and white dwarf from ATEl #7538 (correction)

ATel #7549; E. Popova, P. Balanutsa, V. Lipunov, E. Gorbovskoy, A. Rastorguev, M. Zabolotskikh, N. Tiurina, S. Antipin, V. Kornilov, V. Chazov, V. Vladimirov (Lomonosov Moscow State University), S. Potter, A. Kniazev, M. Kotze (The South African Astronomical Observatory), N. Budnev, K. Ivanov, O. Gress, S. Yazev, V. Poleshchuk (Irkutsk State University), A. Tlatov, D. Dormidontov, V. Senik, A. Parkhomenko, (Kislovodsk solar station of the Pulkovo observatory RAS), V. Krushinsky, I. Zalozhnih, A. Popov, A. Bourdanov (Ural Federal University), Yu. Sergienko, V. Yurkov, A. Gabovich (Blagoveschensk State Educational University), V. Shumkov, S. Shurpakov (MASTER-Team)
on 22 May 2015; 00:09 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

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MASTER OT J121815.15-464904.6 discovery - dwarf nova outburst, Ampl>4

MASTER-SAAO auto-detection system ( Lipunov et al., Advances in Astronomy, MASTER Global Robotic Net, 2010 ) discovered OT source at (RA, Dec) = 12h 18m 15.15s -46d 49m 04.6s on 2015-05-19.86332 UT. The OT unfiltered magnitude is 18.0m (the limit is 18.7m).

The OT is seen in 4 images. There is no minor planet at this place.

We have reference image without OT on 2015-04-09.92451 UT with 19.4 unfiltered magnitude limit.

CRTS observed this area, but didn't see a source, so we can suggest the dwarf nova outburst with Ampl>4m.

Spectral observations are required.

The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/121815.15-464904.6.png

MASTER OT J235232.72+592552.1 discovery - new dwarf nova in outburst with Amplt>4.3

MASTER-Kislovodsk auto-detection system discovered OT source at (RA, Dec) = 23h 52m 32.72s +59d 25m 52.1s on 2015-05-20.91789 UT. The OT unfiltered magnitude is 17.6m (the limit is 19.4m).

The OT is seen in 7 images. There is no minor planet at this place. There is no any sources inside 5" in VIZIER database.
We have reference image without OT on 2015-04-18.02856 UT with 19.0 unfiltered magnitude limit.

Spectral observations are required.

The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/MASTEROTJ235232.72+592552.1.jpg

* * * Correction to ATel #7538 * * *

The authors are deeply indebted to Sebastian Otero, who found that MASTER OT J005559.13+594802.1 is not a possible FUor, being a very large proper motion star, a nearby white dwarf called PM I 00559+5948 in 2013AJ,145,136L.

MASTER Global Robotic Net