Re: Secondary Holders (was Re: ATM: Modifying a Meade 12.5--TryThis At Home)

[Greg Furtman <gfurtman@spacestar.net>]

At 09:18 PM 9/2/97 -0700, Dave Pitou wrote:
>
> 
>> Tell me about it !  (I've got a 10 inch Eq. Starfinder) I've just spent
>the
>> last three days trying to collimate the thing by just adjusting the
>> secondary - a feat I'm slowly beginning to think is impossible.
>> The secondary is a real bugger to adjust. 

>The only secondary holders that, in my experience, are any #@& good are the
>research grade holders from Kennith Novak, (I think in Ladysmith Wis.)
>
>Dave
>
>
I have a Novak secondary & it too drove me nuts trying to tighten the
centeral nut without rotating the secondary mirror. I have come up with a
solution to the problem which will probably work for most secondaries.
Remove the center nut, put on a flat washer, then a split lock washer (or a
strong compression spring), then another flat washer, and last the nut.
Tighen up the nut until the lock washer (or spring) starts compressing, but
not tight enoung to "lock" everything up. You've just made a clutch system
and now you can rotate the secondary to where you want it and let go & it
will stay there.
Greg Furtman
Furtman Woodwork & Design
27426 County Rd H
Webster, WI  54893
(715) 635-7928
gfurtman@spacestar.net

Custom woodworking, including cabinets, furniture,millwork, & telescope parts.