Re: [APML] Tube Rings and Rigidity

["Richard Crisp" <rdcrisp@earthlink.net>]

the Parallax rings are great and are very solid. You can buy them with the 
AP footprint or the Losmandy one.


----- Original Message ----- 
From: "Roland Roberts" <roland@astrofoto.org>
To: <astro-photo@seds.org>
Sent: Tuesday, August 16, 2005 3:09 PM
Subject: [APML] Tube Rings and Rigidity


> I'm looking at getting tube rings with flats on the top to be able to
> stack things vertically a bit more.  My recent outing gave me some first
> hand experience with why everyone here recommends this---I spread things
> out horizontally and discovered the extra difficulties asocciated with
> now trying to balance in three dimensions.
>
> My guide scope is an Orion 120ST, I'm not doing any prime focus work,
> everything is cameras.  I've got a Pentax 67, two 35mm SLRs and on 35mm
> DSLR (modified Canon 350D) with a mini-Borg 45ED.  Okay, I guess that
> one is at prime focus, but it feels more like a telephoto.
>
> I figured I would mount the Pentax 67 directly above the Orion 120ST.
> I'm wondering if anyone here owns this scope and knows what stock tube
> rings will work.  The Orion rings are too flimsy for this, and they are
> nominally 116mm ID while all the more beefy ones I can find (Williams,
> Hutech) are 115mm ID.  I may just call the folks at Anacortes who seem
> to sell all of these rings and see what they think....
>
> regards,
>
> roland
> -- 
>                       PGP Key ID: 66 BC 3B CD
> Roland B. Roberts, PhD                             RL Enterprises
> roland@rlenter.com                            6818 Madeline Court
> roland@astrofoto.org                           Brooklyn, NY 11220
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