Archived posting to the Leica Users Group, 2000/11/05

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Subject: Re: [Leica] Leica lens turned into a telescope - can it be done?
From: Damian Dlugolecki <damian@teleport.com>
Date: Sun, 05 Nov 2000 12:10:25 -0800
References: <3A05321C.13461.14BADD@localhost> <3A058139.742594F9@sympatico.ca>

Vick,  The Leica telescope ocular is a pretty neat accessory.  The
magnification of the telescope depends on the focal length of the lens
which is used.  It can be calculated according to the following formula:

lens focal length/ocular focal length(12.5)=magnification of the viewed
image.  So used with a 250/4 (smallest current lens with tripod bushing)
your magnification would be 20X,

I hope this helps

Damian

Vick Ko wrote:
> 
> I'd like to see the rings of saturn.  How "big" a telescope
> would I need?  Telescopes are more normally quoted
> as lens or mirror diameter, and sometimes f-stop.
> 
> Or - how long a Leitz lens, with this objective, would I need?
> 
> Vick
> 
> Roy Zartarian wrote:
> 
> > There is the 14234, Telescope Ocular R which New York Camera &
> > Video (www.nycv.com) is offering for $300.  I wonder whether you'd
> > have enough reach for astro viewing this type of combination.
> >
> > Roy
> >
> > On 5 Nov 2000, at 8:54, Vick Ko wrote:
> >
> > > Here's a question for the technical types.
> > >
> > > I'd like to merge astronomy with my Leica affliction.
> > >
> > > Can I buy an adapter and eyepiece to turn a long
> > > Leica zoom or telephoto into a telescope?
> > >
> > > If so, what telephoto should I buy?  What if it
> > > were a zoom?
> > >
> > > Who sells the adapter and eyepieces?
> > >
> > > Thanks
> > > Vick
> > >

- -- 
http://www.teleport.com/~damian/strings.htm

In reply to: Message from "Roy Zartarian" <royzart@connix.com> (Re: [Leica] Leica lens turned into a telescope - can it be done?)
Message from Vick Ko <vick.ko@sympatico.ca> (Re: [Leica] Leica lens turned into a telescope - can it be done?)