Archived posting to the Leica Users Group, 2005/06/30
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]>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