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Re: [APML] Comet IZ & M31 [was: Comet IZ from Arizona]
Bobby,
You could cheat and do a long-short composite :-) But you would have
to wait a few weeks to shoot the long exposure without IZ in the frame.
BTW, the comet is currently moving something like 4.1 arcseconds/min
w.r.t to the stars. So you can use that to figure out a tradeoff between
exposure length and round stars. IIRC, there is some stuff in Covington's
book on how to do this.
Shekhar
> Here's the problem on these dual compositions with a fast moving comet like
> IZ. The comet is moving so fast it will be hard to get the deep sky objects
> exposed long enough before the stars and deep sky targets will be trailed.
> The best weapon in this battle is a fast Schmidt camera like an f/1.5
> Celstron Epoch Schmidt. The ball's in your court Chris <g>
>
> Fastest thing I've got is a Pentax 67 105mm (f/2.4) and a Pentax 67 165mm
> (f/2.8) lens. Those will be my weapons for the comet. I'd love to have two
> 67 cameras both going; one with TP for the luminance and another for the
> color shot. IMHO that's what it would take to get one of these compositions
> done well short of good schmidt camera.
>
> Chris went 4 min at f/1.5. Chris did you see any evidence of trailing at
> high resolution on your scans? I think the comet is moving it's fastest
> (apparent motion) for the next week
> Bobby Middleton
>
>
> ----- Original Message -----
> From: "Stan Richard" <stanrichard@hotmail.com>
>
>
> > Matt, according to www.spaceweather.com, the comet and M31 will be just
> 0.5
> > degrees apart on the 4th, not sure about the 3rd, probably not quite as
> > close.
> >
> > Stan
> >
> >
> > >From: Matt BenDaniel <matt@starmatt.com>
> > >Reply-To: astro-photo@seds.org
> > >To: astro-photo@seds.org
> > >Subject: [APML] Comet IZ & M31 [was: Comet IZ from Arizona]
> > >Date: Mon, 01 Apr 2002 15:50:50 -0500
> > >
> > >How many degrees separation on those two days?
> > >
> > >Matt
> > >
> > >At 03:29 PM 4/1/2002, Chris Schur wrote:
> > >>Stan, both the 3rd and the 4th it is very close indeed. Hope the sky
> > >>holds
> > >>out.
> > >>
> > >>Chris Schur
> > >
> > >--
> > >Matt BenDaniel
> > >matt@starmatt.com
> > >http://starmatt.com
> > >
> > >
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> >
> >
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