(IAAC) Bright supernova in NGC 6946 in Cepheus/Cygnus

[Lewis J. Gramer]

Thanks for the correction, Wouter - Cartes du Ciel tricked me again! ;-)

Clear skies over the Netherlands,
Lew


> -----Original Message-----
> From: Wouter van Reeven [mailto:wouter at van.reeven.nl]
> Sent: Thursday, September 30, 2004 11:37 AM
> To: IAAC: Internet Amateur Astronomers Catalog of Visual
> Deep-Sky Observations
> Cc: dedalus at alum.mit.edu
> Subject: Re: (IAAC) Bright supernova in NGC 6946 in Cepheus/Cygnus
>
>
> Hi Lew,
>
>
> Sorry, one correction here. NGC 6946 is 40' SE of NGC 6939.
>
>
> Greets, Wouter
>
> "Lewis J. Gramer" <lgramer at upstream.net> wrote:
> > These two messages appeared on [amastro] yesterday. NGC 6946, by the
> > way, is that lovely little spiral on the Cygnus/Cepheus border, that
> > is also RIGHT NEXT to (40' NE of) a pretty open cluster, NGC 6939...
> >
> > So that's three fine sights in one field, for modest amateur scopes!
> >
> > Clear skies and happy SN hunting,
> > Lew
> >
> >
> >
> ______________________________________________________________
> __________
> >    Date: Wed, 29 Sep 2004 11:42:17 -0700 (MST)
> >    From: Brian Skiff <brian.skiff at lowell.edu>
> > Subject: Bright supernova in NGC 6946
> >
> >      The _nth_ supernova in NGC 6946 has been discovered.
> The position
> > is given as:  20 35 25.4 +60 07 18 (J2000), and magnitude
> 13.  The location
> > is on the east side of the galaxy.  A chart prepared by
> Reinder Bouma
> > is posted here:
> http://www.shopplaza.nl/astro/vs-charts/sn2004et.htm
> >
> > \Brian
> >
> >
> ______________________________________________________________
> __________
> >
> > Message: 2
> >    Date: Wed, 29 Sep 2004 21:00:35 +0200
> >    From: Mikkel Steine <mikkel at messier45.com>
> > Subject: Re: Bright supernova in NGC 6946
> >
> > On Wednesday 29 September 2004 20:42, Brian Skiff wrote:
> > >      The _nth_ supernova in NGC 6946 has been discovered.
>  The position
> > > is given as:  20 35 25.4 +60 07 18 (J2000), and magnitude
> 13.  The location
> > > is on the east side of the galaxy.  A chart prepared by
> Reinder Bouma
> > > is posted here:
> http://www.shopplaza.nl/astro/vs-charts/sn2004et.htm
> >
> > According to vsnet it's the eighth supernova in NGC 6949:
> >
> > [vsnet-alert 8328] SN 2004et in NGC 6946 (mag 12.8, CBET 95)
> > SN2004et  20040927.0  128C  SMr
> >
> > # SN 2004et (20:35:25.4, +60:07:17.6 (J2000.0), offset
> about 250"E and
> > # 120"S) is hosted by NGC 6946, a quite nearby (5.1Mpc)
> face-on spiral
> > # (SAB(rs)cd) galaxy in the northern part of the
> constellation Cygnus.
> > # NGC 6946 is one of the most SN productive galaxies (SNe 1917A,
> > # 1939C, 1948B, 1968D, 1969P, 1980K and 2002hh), then SN
> 2004et is the
> > # eighth SN in one galaxy (new record!).  The Asiago team took a
> > # high-resolution spectrum on Sept. 28, which suggests that it is a
> > # young type II SN, affected some reddening by both in our
> Galaxy and
> > # in NGC 6946; total amount of E(B-V) is estimated as 0.41 mag.  The
> > # discovery magnitude is consistent with the expected maximum for
> > # typical SN II.  Further observations are strongly encouraged.
> >
> > I've made a plot from Guide here:
> >
> > http://messier45.com/images/sn2004et.gif
> >
> > I'm going out just this minute to observe it.
> >
> > --
> > Vennlig hilsen,
> > Mikkel Steine
> > ___________________________________________
> > mikkel at messier45.com - http://Messier45.com
> > What to observe next?

Black holes are where God is dividing by zero.