Ad Astra Observatory

Hi Jimbo,

Thanks for the info– that will help the next guy looking to do the same
thing.

Take Care
Ron
—– Original Message —–
From: “Jimbo S. Harris” <jimbo@jimbo.net>

To: “RONALD NEWMAN” <moonlite7@verizon.net>
Sent: Monday, March 20, 2006 1:42 PM
Subject: Re: Orion 8” f/5 + CR-1 +/- spacers

> Ron,
>
> Per our phone conversation on Friday, I pulled the 1” (?) spacer out of

> the stack on my CR-1 focuser (I needed a bit more in-focus in order to get
> my camera to come to focus, if you recall), then replaced the 1.75” bolts
> with .75” bolts (black ones, too; very cool — I replaced the ones on the
> curved base to match!).

>
> As I suspected, the camera came to focus with no problem. I haven’t
> measured, but it looks like a spacer height around .75” would be low
> enough to work, although .5” would be more flexible for people with
> differing camera body depths.

>
> As I feared, however, taking the spacer out wreaked havoc on my ability to
> bring regular eyepieces to focus; I ended up building myself a little
> adapter out of a 1.25”-male-to-T-male (regular old “1.25 T-adapter”)
> screwed into a T-female-to-1.25”-female (a weirdo gadget I got from

> ScopeTronix; their part #STTEP), which ends up being a very short 1.25”
> extension tube (something around an inch, I’d imagine (: ), which works
> just fine. All my eyepieces are 1.25” (as an imager, I only use about 3
> eyepieces anyway), so this is a workable solution for me.
>
> Again, I suspect that there’s probably a “sweet spot” in there somewhere,

> where the camera will come to focus at or near the bottom of the travel,
> and the eyepieces will come to focus somewhere in the middle/at the top.
>
> That’s what I know at the moment.
>
> Thanks for your help!
>
> Regards,

> Jimbo S. Harris
> Another satisfied Moonlite customer
>
>
>