> Had it just passed a nearby large gravitational body?
The earth ;-)
A nice picture of the comet one day after fragmentation from me:
http://www.sternhimmel-ueber-ulm.de/scratch/C2006M4d.jpg
Thomas
New Millenium Observatory
Der Sternhimmel über Ulm
http://www.sternhimmel-ueber-ulm.de
-----Original Message-----
> Date: Thu, 26 Oct 2006 18:08:00 +0200
> Subject: Re: [meteorite-list] Rob's Comet's Exciting Explosion Part II
> From: "E.P. Grondine" <[EMAIL PROTECTED]>
> To: [email protected]
> Hi Doug -
>
> I wonder why Rob's come frgamented up at this
> particular time. Where was Rob's comet at in terms of
> the plane of the ecliptic? Had it just passed a nearby
> large gravitational body?
>
> good hunting,
> Ed
>
> --- MexicoDoug <[EMAIL PROTECTED]> wrote:
>
> > Hello Listees,
> >
> > Rob's green Comet has exploded. This is fascinating
> > and this is big news for Comet people. OK, I should
> > say it had an unexpected outburst and just got 5-10
> > times brighter while it was just on its way out and
> > ready to wane quickly. I'm sure if we were on the
> > comet that would be a mean explosion. It now kicks
> > the butt of SW3 in brightness. As the Moon is
> > getting stronger, Wednesday night (tonight, and
> > maybe one more night) is basically the last chance
> > unless something else fantastic happens like just
> > did to this comet 10 hours ago or so.
> > Congratulations, Rob, your Comet just turned into
> > one of the top 5 of the last decade!
> >
> > The outburst is nice! Here's a comparison with a
> > normal consumer digital camera nights of , widest
> > angle setting (35mm equivalent zoom setting of a
> > 35-200). Lat. @ 30º24' 20:50PM EDT (same time, 120
> > min after Sunset, and place both days).
> > Transparency was a little worse the second night,
> > but a great Milky Way sky both times.
> >
> > www.diogenite.com/061024-25.jpg
> >
> > The top is the evening of 2006 Oct 24.06 which is:
> > C/2006 M4 (SWAN) 2006 Oct. 24.04 UT: m1=5.9, Dia.=
> > 8', DC=7 above average transparency vis. LM = 6.0
> >
> > The bottom is the evening of 2006 Oct 24.06 which
> > is:
> > C/2006 M4 (SWAN) 2006 Oct. 25.04 UT: m1=4.4, Dia.=
> > 8', DC=8 average transparency vis. LM = 5.6
> >
> > If you want to see the magnitudes of the comparison
> > stars in the side-by-side photo above, they here is
> > a star chart showing the positions of the comet both
> > nights and magnitudes of the stars.:
> > www.diogenite.com/mag.jpg
> >
> > The "C" shaped constellation is Corona Borealis,
> > just under Hercules and headed the Strongman's way.
> > You can see how much the comet moved in two night
> > and guess very accurately based on that where it
> > will be tonight. It is not hard to find with
> > binoculars. The comet is WNW.
> >
> > The camera and photos were the same, however it was
> > somewhat colder the first night and better
> > transparency, so the raw photos presented would have
> > to be adjusted - better to just compare to their
> > respective comparison stars.
> >
> > Outburst +1.5 magnitude brightening!! First comet I
> > have seen naked eye since Kohoutek, thanks to the
> > dark sky location. Still, C/2004 Q2 Machholz was
> > more impressive in the binoculars, though. This
> > comet looked like a bright galaxy through the 10x50
> > consumer binoculars and during the most steady view
> > through them, a short tail could be seen - but only
> > under
> > optimal conditions. The size of the comet reported
> > was estimated in a 89mm Mak-Cassegrain telescope.
> >
> > Best wishes, Doug
> >
> > ----- Original Message -----
> >
> > Sent: Tuesday, October 24, 2006 6:03 PM
> > Subject: Re: 2006 M4 (SWAN) dramatic brightening
> >
> >
> > > > Easily visible in Nautical twilight? I just saw
> > M4 last time from a
> > > > dark sky, and it was similar to M13 in
> > magnitude. Is something
> > > > changing - this bright magnitude sounds too good
> > to be true? Can
> > > > someone else kindly confirm as it would be worth
> > a 100 miles trip
> > > > now?
> > > >
> > > > I'll upload a photo of Corona Borealis and the
> > comet from a section
> > > > of wide angle 35mm equivalent of the normal 135
> > film camera. It
> > > > isn't good, but the comet is perceptible and
> > green 2006 Oct 24.04 UT.
> > > > (Taken last night EDT about 8:52 PM, 15 seconds
> > exposure)
> > > > www.diogenite.com/061024-06UT.JPG (should have
> > been saved as
> > > > 061024-04, not -06) Latitude 30º24' Vis. LM 6.
> > > >
> > > > The lower two stars of the "C" of Corona
> > Borealis point to the comet
> > > > which is dim but the greenest speck on the
> > image, half way from the
> > > > most counterclockwise star of CrB to the upper
> > right corner of the
> > > > image.
> > > >
> > > > I'm not comparing this to the nice photos
> > recently posted on the
> > > > internet, but posting it to to compare the
> > > > magnitude...photographically at least... less
> > than 20 hours ago....
> > > >
> > > > Thanks kindly, Doug
> > >
> > >
> > > ______________________________________________
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> >
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> >
>
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