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MASTER: SN discovery in QSO host galaxy.

ATel #7359; V. Shumkov, V. Lipunov, E. Gorbovskoy (Lomonosov MSU), D. Buckley (SAAO), S. Antipin, N. Tiurina, P. Balanutsa, V. Kornilov, V. Chazov, V. Vladimirov, E. Popova, S. Shurpakov (Lomonosov Moscow State University, SAI), S. Potter, A. Kniazev, M. Kotze (The South African Astronomical Observatory), O. Gress, K. Ivanov, N. Budnev, S. Yazev, V. Poleshchuk, E. Konstantinov, O. Chuvalaev (Irkutsk State University), A. Tlatov, D. Dormidontov, V. Senik, A. Parkhomenko, (Kislovodsk solar station of the Pulkovo observatory RAS), V. Yurkov, Y. Sergienko, A. Gabovich (Blagoveshchensk Educational University), V. Krushinsky, I. Zalozhnih, A. Popov, A. Bourdanov (Ural Federal University)
on 9 Apr 2015; 10:56 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

Subjects: Optical, Request for Observations, Supernovae, Transient

MASTER OT J125459.84-442516.5 discovery - possible SuperNova in QSO galaxy BZB J1254-4424, also known as Parkes radio source PKS 1252-441.

MASTER-SAAO auto-detection system ( Lipunov et al., Advances in Astronomy, MASTER Global Robotic Net, 2010 ) discovered OT source at (RA, Dec) = 12h 54m 59.84s -44d 25m 16.5s on 2015-04-08.93131 UT.

The OT unfiltered magnitude is 17.3m (the limit is 19.1m). There are 3 images with this PSN in MASTER-SAAO database.
We have reference image without OT on 2015-03-16.00228 UT with 19.8 unfiltered magnitude limit.

This SN is in 29.5" from the center of galaxy, also known as QSO and Parkes radio source and GALEXASC J125457.57-442456.2 .

Spectral observations are required.

The discovery and reference images are available at:http://master.sai.msu.ru/static/OT/125459.84-442516.5.png

List of Optical Transients discovered by MASTER

MASTER Global Robotic Net