SVF25 2.5” Dual Speed, Fully Rotating, Rack and Pinion Focuser
Featuring 80 mm of travel, this focuser is an ultra-precise dual speed unit that is threaded for our field flatteners that have the -25 designation (SFF7-25, SFFR80-25, etc). For visual use, our precision compression ring 2” and 1.25” adapters are included. Attaches to our telescopes that use the standard M 88.5 X 1 thread. Examples of telescopes that may be used with this focuser include the Nighthawk Next Generation, SV90T (not SVR90T), SV90TBV, SV102ED, and some SV105’s. Not all telescopes will operate with this focuser so inquire before you purchase.
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I have owned and enjoyed Stellarvue telescopes and accessories for years. So when the Crayford focuser on my SV80ED Nighthawk Next Generation telescope started to show its age, I figured it was time for an upgrade. But not just any upgrade, I wanted to keep it affordable and if possible, keep it all Stellarvue.
Speaking with Alex at Stellarvue, he made a recommendation that fit both desires. His advice was the all-new FSVF25. This is a very beautiful yet very sturdy duel-speed rack and pinion focuser with a 2.5 inch diameter draw tube that includes 2 inch and 1.25 inch adapters.
So how did it all work out? Well, I was elated to find this focuser fit my little refractor like it was custom made for it. And, not only does it look great, it works great. It is smooth and robust. It does not vignette the views nor does it show any signs of wobble or backlash. The whole focuser is rotatable but so precision-made, it does not lose collimation. And oh yes, it has a finder shoe.
So was Alex right to recommend the Stellarvue FSVF25 focuser to meet my needs? There is only one way to answer that. And that is with a very grateful and resounding “YES!” So thank you Alex, I could not be happier and my scope could not be happier!
The Stellarvue 2.5" DUAL-SPEED FOCUSER - FSVF25 replaced the original focuser on my SV90T. (Is it now an SV90T-FSVF25?) It is a bit lighter than the original, but shows strength to hold any likely accessory. Hundreds less expensive than a Feather Touch, I am more than satisfied with my decision to buy it.