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New Nova Candidate in M31

ATel #1156; D. Hatzidimitriou (Department of Physics, University of Crete, UoC), V. Burwitz (Max-Planck-Institut fuer extraterrestrische Physik, MPE & Observatori Astronomic de Mallorca, OAM), H. Steinle (MPE), W. Pietsch (MPE), A. Slowikowska (UoC), P. Reig (UoC), G. Papamastorakis (UoC)
on 26 Jul 2007; 16:23 UT
Credential Certification: Vadim Burwitz (burwitz@mpe.mpg.de)

Subjects: Optical, Nova

Referred to by ATel #: 1157, 1186

We report the discovery of an optical nova in M31 on four consecutive dithered R filter CCD images (each with 100 sec exposure) obtained on 2007 July 25.92564, 25.92714, 25.92865, 25.93015 with corresponding R magnitudes of 18.1, 18.2, 18.1, 18.1 obtained at the 1.3m f/7.5 telescope at Skinakas Observatory, Crete, Greece, using an Andor DZ436-BV CCD Camera.
The position obtained for the nova candidate is RA(2000) = 00 42 43.29 , Dec(2000) = +41 17 44.10 with an accuracy of 0.2". A stacked image from 2007 July 24.03419 shows no object at the position of the nova candidate brighter than the limiting R magnitude of ~18.6.
All magnitudes given are from a photometric solution using R magnitudes of the Massey M31 catalog.