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Orion Synta R&P 1.25" Focuser F/86mm ID Tube For Sale

Price - $45.00

Ad Number: 127801

Posted: 31 Jan 2018

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New old stock Orion/Synta all metal (except for the one baffle and the focus knobs) 1.25" rack and pinion refractor telescope focuser with 86.3mm OD flange, three screw attachment, plastic knobs, cast-in standard Synta finder shoe with thumbscrew.

Large diameter 2.25" OD drawtube has 4-9/16" travel, that size probably results in less drawtube droop than the smaller ones commonly used on scopes designed for 1.25" EPs. Has one plastic baffle about 2” from the EP end with an opening of about 1.25". 1.25" EP holder is built into the screw-on drawtube end cap.

The EP adapter is in two pieces, the main body threads onto the drawtube with 56.8mm threads (probabaly considered 57mm threads), the 1.25" EP adapter threads onto it with 35.7mm threads (probably considered 36mm).

Most have the EP thumbscrew as shown, a few have a slightly larger thumbscrew.

Possible these were made with 2" adapters but the baffle would have to be removed and the screw that holds one end of the rack would have to be shortened. As these were designed for small aperture (maybe up to 80mm?) refractors I would think there wouldn't be much need to accommodate 2" EPs from a mass construction standpoint so I don’t think they ever were.

I have ten of these, bought directly from Orion, most likely made and stored as replacements and such. I’m pretty sure these were not rejects or returns as they all are complete, all in basically the same cosmetic and operational condition. I've tested all for relatively smooth action throughout their length in both directions and all fine. Some are a bit tighter than others which I would expect from mass production but well within limits. And of course you could clean out and replace the grease as is commonly done for Chinese focusers or make a slight change at the adjustment points.

$45 each shipped CONUS, PayPal preferred but not required, no fee.

Tom Duncan


  • Condition New Old Stock
  • Location Chico, CA

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