Re: Supernova 2005cs in M51
- From: TheOvavas <oriel@xxxxxxx>
- Date: Mon, 04 Jul 2005 03:29:05 -0500
nice object to find ... easy.. one of the best.
Stupendous_Man wrote:
> German astronomer Wolfgang Kloehr has reported a
> supernova in M51, based on images taken in the
> past week (June 22-28, 2005). The object appears
> roughly 15 arcseconds west and 67 arcseconds
> south of the nucleus. Several other observers
> have confirmed that an object appears at this
> position but not on standard charts.
>
> This will likely be one of the brightest
> supernovae of the decade. The last time a
> supernovae occurred in M51 was in 1994;
> that event, SN 1994I, reached a peak V-band
> magnitude of 12.9. If the new supernova
> is a type Ia explosion, rather than a type
> Ic event like SN 1994I, it might become a
> magnitude or so brighter.
>
> Back in 1994, I asked amateur astronomers
> for any images of M51 taken just before the
> supernova was discovered. Several observers
> provided pre-discovery images which gave us
> the earliest measurements of supernova's
> brightness -- which, in turn, are very
> valuable in understanding the evolution
> of supernovae. A paper describing some of
> these early measurements by amateurs was
> published in the "Astronomical Journal",
> volume 111, p. 327 (1996). You can find a copy
> at
>
> http://stupendous.rit.edu/richmond/94i_preprint.ps
>
> Let me ask the community once again to check
> for any images you might have taken of M51
> between June 15 and June 30, 2005. If you
> make a copy of such images available to me,
> I would be happy to check them over for the
> presence of the supernova, and do my best to
> measure its brightness. I'll even try to
> convert the data onto one of the standard
> magnitude scales so that it might be
> incorporated into a proper study. If you
> are interested, please contact me at
> mwrsps@xxxxxxx and
> include as much information about your
> image(s) as you can: time, date, instrument,
> filters, exposure times, limiting
> magnitude, FWHM, etc.
>
> And, of course, please watch this event
> as it unfolds over the next few months!
>
> Michael Richmond
.
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