On Sun, Mar 04, 2007 at 09:30:13AM -0500, Chuck Norcutt wrote:
> Russ Butler wrote:
> > Moose wrote:
> >> You can get adapters to use camera lenses as telescopes,
> > I'd like to be able to use some of my OM mount lenses as telescopes. I
> > did a bit of unsuccessful googling. Found lots of telescope to camera
> > but didn't find camera lens to eyeball adapters.
> I haven't seen any of these things offered for many, many years.
> Spiratone was the only seller of same that I can recall so we're
> basically talking maybe through the 70's and early 80's at latest. I
> don't recall exactly when Spiratone bit the dust.
A couple of years ago, I got one for Christmas. It's got a Pentax thread
mount on one end and an eyepiece on the other.
> I wouldn't waste a lot of time on it. The problem with using a camera
> lens as a scope is that the lenses have very little backfocus distance
> and it's hard to get an appropriately designed and sized porro or other
> type of roof prism (for upright and proper right/left viewing) into the
> available space.
This one's about a foot long, and uses a couple of lenses. It must have been
made in Russia: the label on the side is Turist-FL in Cyrillic letters.
Dunno if it makes much of a serious scope, but it does work. I occasionally
use it with either the Celestron 300 mirror lens I mentioned earlier or a
400/6.3 Spiratone preset. Since both are T-mount lenses, a Pentax screw
thread T-mount adapter is all that's needed. I suspect a bit of mechanical
kludgery could put an OM lens mount on the front, but I don't have a junk
body to try with.
--
Jay Maynard, K5ZC http://www.conmicro.cx
http://jmaynard.livejournal.com http://www.tronguy.net
http://www.hercules-390.org (Yes, that's me!)
Buy Hercules stuff at http://www.cafepress.com/hercules-390
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