Sheepsprinklers! Anyone used or made one?

[Poita (Peter)]

I've been reading a lot lately since selling the gear, and have become quite interested in the Schiefspiegler design, especially as a obstruction free planetary design.

Has anyone ever owned/made/used one?

There is a commercial one here:
http://translate.google.com/translat...index_tel.html

[ZeroID (Brent)]

There has been quite a bit of discussion on them over on CloudyNights. A few thinking of building.

[Poita (Peter)]

Just reading that now, the mirrors actually seem quite an easy build compared to some.

[blink138 (Pat)]

ha ha sheepsprinklers!
i sent away to america for a book i found at the technical library in perth
(you could not loan books) in 1989 called "telescope optics, evaluation and design" by harrie rutten and martin van venrooij
any how they have a lot of designs for amateurs to make including ray tracing results for three different (long) f/l radii of curvature.... well everything technical to produce one
kept me fascinated for ten years
pat

[dannat (Daniel)]

Have you spoken to Barry about it? he has a nice one

[MrB (Simon)]

Originally Posted by blink138

i sent away to america for a book i found at the technical library in perth
(you could not loan books) in 1989 called "telescope optics, evaluation and design" by harrie rutten and martin van venrooij

You can however go to your local library and ask them to get it from Alexander for you, if it isn't a Reference book (red 'R' on spine).
Tho I think they can still get it for you if it is reference, but you can only read it at the local. I think it's only the books in the 'stack' that local's can't access(?) tho I have had access to stack books at Alexander, so could be wrong.
Too many "I think" haha. Been a long time since I did it. Internet is king now.

Anyway, pretty sure I borrowed that book thru my local years ago.