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Inexpensive focuser

Started by Skywise1, 06/18/2015 01:02PM
Posted 06/18/2015 01:02PM Opening Post
Looking for inexpensive 1.25" rack and pinion focuser for our school Newtonian. Was able to purchase a plastic one a few years ago, but forgot where.
Posted 06/18/2015 01:17PM #1
There's a GSO 1.25" that's on the lower end of price. If you find something less let me know. ;-) I'm looking at changing out the plastic rack & pinion on my Meade Starfinder. You could post a wanted ad on AM and I bet you'd get plenty of bargains!

~ Charlie Stevenson

8" f/5.7 String Telescope - 1st Scope Build; 2nd Place Stellafane 2016 Optical Award for Newtonians 12.5" and Smaller
10" f/4.5 Newtonian (June 2015) mirror refigured by Optic Wave Labs P-V WaveFront 1/14.24, Strehl Ratio 0.993 (Aug '15)
Criterion RV-6 seems to be circa 1973 (June 2015) [For Sale]
Celestron C8-A XLT (January 2015) [For Sale]
Celestron PowerSeeker 70AZ (Christmas 2014)
Aldrich Astronomical Society member since 2015
http://astro.charleskelleystevenson.com/
Posted 06/19/2015 05:25AM #2
If you don't want to wait, Orions sells a 1-1/4" focuser:

http://www.telescope.com/Accessories/Telescope-Focusers/Orion-Basic-125-Rack-and-Pinion-Telescope-Focuser/pc/-1/c/3/sc/51/p/13031.uts

I believe it's the same as they use on their 6" Newtonian telescopes. You'll want to shim the draw tube to make it fit more snugly in the focuser and minimize the collimation problems you'll have otherwise. It's simple to do and takes less than an hour.