RE: ATM 18 inch telescope

["Mel Bartels" <mbartels@efn.org>]

A little software program to help calculate dimensions of folded
newtonians (look for foldref.zip)

http://www.efn.org/~mbartels/tm/software.html

Folded reflectors have appeared over the decades.  There was a nice 12
inch in the Sky and Tel April 1976 pg 278.  Has laid out dimensions and
an interesting tube assembly and mount.

Bob Pfaff's folded 24"

http://www.rtmc-inc.org/RDS/RTMC96.html

Also see Northern Virginia's Sweet 16 folded, flexed mirror scope, for
$200

http://www.novac.com/sweet/sixteen.htm

I also have private pics of a folded 41 inch showing observing at 45
degree angle while still sitting down.

Mel Bartels