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SUPERNOVA 2013ej IN M74

28 Jul 2013, 13:34 UTC
SUPERNOVA 2013ej IN M74
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Following the posting on the Central Bureau's Transient Object Confirmation Page about a possible Supernova in M74 (TOCP Designation: PSN J01364816+1545310) we performed some follow-up of this object remotely through a 0.43-m f/6.8 astrograph + CCD of iTelescope network (MPC Code Q62 - Siding Spring, AU).On our images taken on July 27.7, 2013 we can confirm the presence of an optical counterpart with R-filtered CCD magnitude 13.0 and V-filtered CCD magnitude 12.6 at coordinates:R.A. = 01 36 48.20, Decl.= +15 45 31.0(equinox 2000.0; UCAC-3 catalogue reference stars).Our annotated confirmation image (single 120-second exposures under a cloudy sky):An animation showing a comparison between our confirmation image and the archive POSS2/UKSTU plate (R Filter - 1990). Click here or on the thumbnail for a bigger version: UPDATE - July 28, 2013According to CBET 3606 this transient has been discovered by LOSS supernova survey on unfiltered KAIT images obtained on July 25.45.D. D. Balam, Dominion Astrophysical Observatory, National Research Council of Canada; M. L. Graham, Las Cumbres Observatory Global Telescope, University of California at Santa Barbara; and E. Y. Hsiao, Las Campanas Observatory, report that a spectrogram (range 369-700 nm, resolution 0.3 nm) of PSN J01364816+1545310 = SN 2013ej, obtained on July 27.41 ...

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