[ATMoB-discuss] Telescope Tube Rings

[Jeff Albro]

You could make plywood rings, or it looks like you might be able to cut
apart the base of the Orion rings and add Pi * (D1-D2) length of
material by welding.

Or you could get fancy and expensive with laser or waterjet cut rings :)

See some of you at the club house tonight!

-Jeff

Herzberg, Steven (OCD) wrote:
> I have an odd-sized OTA - which I bought from the club several years ago
> - for which I am in search of tube rings to attach to the dovetail
> plate/mount.  The tube is a sonotube (or something like it) and has an
> outside diameter of approx 195mm and so falls between the standard sizes
> on the market (i.e. Orion has 184mm and 235mm rings but nothing in
> between - I bought the 184mm rings thinking they may have enough give to
> work, but I can't make them quite fit, not sure if they could be
> stretched like an undersized wedding ring).  The tube also is fitted
> with fairly wide metal flanges at each end, so the rings would have to
> be hinged to slip around the body rather than over the ends.
>  
> Does anybody have something that might work for this tube, the ability
> to stretch out the ones I bought, or know of a potential source for
> (relatively inexpensive) tube rings?
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