Archived posting to the Leica Users Group, 2005/06/30

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Subject: [Leica] 21.4 meters across and only f/8 !
From: s.jessurun95 at chello.nl (animal)
Date: Thu Jun 30 15:58:09 2005
References: <001c01c57dbf$b5bb1750$6452c33e@symke> <p06210200beea26445953@[10.4.1.193]>
 

> >http://www.gmto.org/tech_overview
>>best,simon jessurun
>
> Isn't that about 25m across (3 x 8.4m) and a focal length of 18m which 
> results in approx. f/0.7?
>
> f/1 and larger (smaller number) are usual apertures in large mirror 
> telescopes.
>
> -- 
>    *            Henning J. Wulff
>   /|\      Wulff Photography & Design
>  /###\   mailto:henningw@archiphoto.com
>  |[ ]|     http://www.archiphoto.com
>
"The final focal ratio at the straight Gregorian focus will be f/8.4 with an 
image scale of one arcsecond per millimeter"
Replies: Reply from henningw at archiphoto.com (Henning Wulff) ([Leica] 21.4 meters across and only f/8 !)
 In reply to: Message from s.jessurun95 at chello.nl (animal) ([Leica] 21.4 meters across and only f/8 !)
Message from henningw at archiphoto.com (Henning Wulff) ([Leica] 21.4 meters across and only f/8 !)