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Old focuser

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#1 jrussell

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Posted 12 October 2021 - 03:28 PM

So last weekend I picked this up from an older gentleman that used to build his own telescopes. He said it's about 40 years old and made of brass. He didn't have any information other than that. After looking it over the only marking I could find was the made in Japan label. It's made for 1 1/4" eyepieces. I know it's a long shot just going on that, but does it look familiar enough to anyone that you might know a little more about it?

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#2 jrussell

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Posted 12 October 2021 - 03:29 PM

Bottom view

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#3 gene 4181

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Posted 12 October 2021 - 03:43 PM

 Looks like a University Optics 1.25 in focuser . The early model UO Vega had a split at the top of the focuser   tube . Do a search here for University Optics Catalog, someone scanned in all the pages  in a thread . 


Edited by gene 4181, 12 October 2021 - 03:52 PM.

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#4 sdedalus83

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Posted 12 October 2021 - 04:06 PM

They were probably made by Nihon Seiko. This model is rotating with a 50mm diameter base and would be pretty easy to adapt to a refractor.

 

I believe several scope makers used it or something nearly identical on their own Newtonians, like on the Astro Optical newts.


Edited by sdedalus83, 12 October 2021 - 04:08 PM.

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#5 Bomber Bob

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Posted 12 October 2021 - 04:17 PM

Astro Optical & Yamamoto used that unit on their 4" and/or 6" Newts.  I put one on my RV-6.  Very Nice!

 

RV6 Rebuild S81 - Hino Focuser.jpg


Edited by Bomber Bob, 12 October 2021 - 04:19 PM.

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#6 Garyth64

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Posted 12 October 2021 - 06:52 PM

I have had that focuser since about 1971.  I drove out to UO's shop in AA. 

 

UO focuser 1.jpg , UO focuser 2.jpg , UO focuser 3.jpg

 

I purchased it for my Gregorian, and for a while it was mounted on it.

 

Gregorian Pics 0012a.jpg

 

The one section also fits perfectly into a Tasco 66TE tube.  

 

66TE with UO focuser.jpg

 

I was thinking of adding it onto my "new" red 826, but I may hold off on that mod.


Edited by Garyth64, 12 October 2021 - 06:53 PM.

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#7 jrussell

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Posted 13 October 2021 - 12:45 PM

Thanks, y'all are awesome. I really didn't think on such scant information I'd get anything on it. It really seems like a very well made piece.


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