Re: [APML] New images

["Zoë" Mcenery <zmcenery@yahoo.com>]

Thank you for your answer Bradley.
So would that be using the telescope as the lense, verses piggy backing??

--- Bradley Hope <bradley@thorngarden.net> wrote:
> Morning, Zoe;
> 
> Eyepiece projection places a regular eyepiece between the telescope and
> camera (minus the camera lens) giving a higher power (longer focal length)
> and a reduction in the speed of the telescope which is f/10 at prime focus
> (for LX90). Depending on which eyepiece  you use, anywhere from 26mm on down
> (32mm and longer has too large a barrel to fit into the teleprojection
> adapter in spite of what OPT's info says) you'll get different focal lengths
> and focal ratios.
> 
> You can go here for more information...
> 
> http://www.optcorp.com/cart/ProductDetail.asp?PR_ProductID=648
> 
> Bradley
> 
> ----- Original Message ----- 
> From: "Zoë Mcenery" <zmcenery@yahoo.com>
> To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
> Sent: Thursday, November 06, 2003 7:07 AM
> Subject: Re: [APML] New images
> 
> 
> > Bradley,
> >
> > You say you took those pics of Saturn at 1 sec at f/63 (15mm eyepiece
> projection)
> >
> > 2 questions, what is an eyepeace projection, and how do you get f63?? what
> type of lense is
> > that???
> >
> >
> > Zoe
> > Edmoton, Alberta
> 
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