Dual-Speed 2'' Crayford Focuser for Sky-Watcher Refractors
Dual-Speed 2'' Crayford Focuser for Sky-Watcher RefractorsDual-Speed 2'' Crayford Focuser for Sky-Watcher RefractorsDual-Speed 2'' Crayford Focuser for Sky-Watcher RefractorsDual-Speed 2'' Crayford Focuser for Sky-Watcher Refractors

Dual-Speed 2" Crayford Focuser for Sky-Watcher Refractors

  (48 Reviews)
✓ 2 year warranty


2x in stock shipped 1-2 working days

About this product

Model:  skywatcher_focuser_20171
Part Number:  20171

Latest model with screw holes for fitting a finder-shoe. 

CNC machined, black-anodised, 10:1 dual-speed rotatable Crayford focuser.

This focuser is a direct replacement/upgrade for the standard focuser supplied with Sky-Watcher Evostar 102/120/150, Startravel 102/120/150 and Evostar 80ED/100ED/120ED refractors. 

It is also compatible with Celestron Omni 102 and Omni 120 telescopes. 

Supplied with 2"-1.25" eyepiece adapter, so accepts both 1.25" and 2" eyepieces.

Features adjustable tension, locking clamp and indexed drawtube.

Length of focuser 132mm + 80mm when draw-tube fully extended. 

Our Astro Essentials Adapter will enable you to use Sky-Watcher focal reducers with this focuser smiley

Note: Accepts a regular Synta-type finder shoe (when supplied, the two attachment points have grub-screws fitted). 

Customer reviews

Average Rating (48 Reviews):  
Write a Review and share your opinions!

Rating (max 5):  
Superb replacement focuser for my Skywatcher Startravel 120 OTA
05 April 2024  | 

I use my Skywatcher Startravel 120 OTA mainly for imaging. When I received the Crayford Focuser, I found that I could not attach my Canon DSLR camera using a T-ring to the new focuser. I wrote to FLO the next morning and Dave very responsively replied saying that I needed an extension adapter for attaching my camera. He referred in his reply the following link https://www.firstlightoptics.com/adapters/astro-essentials-2-40mm-focus-extension-t-adaptor.html which is the exact extension adapter I needed. From the time I emailed FLO to receiving the solution, it took a mere 13 minutes. Thanks Dave@FLO! Later in the afternoon, I removed the stock focuser from the scope and replaced it with the Crayford Focuser in less than 10 minutes. Different screw bits are required for removing the stock focuser and attaching the Crayford Focuser. Just make sure you have a comprehensive set of screwbits handy.

Rating (max 5):  
Dual-Speed 2" Crayford Focuser
28 February 2024  | 

The quality of this focuser is amazing, As soon as you get it out of the box you can tell it's been very well made, Fitted to my sky-watcher 120 ota and it has turned an already amazing telescope into a top of the line model.

Rating (max 5):  
Dual Speed 2Ē Crawford Focuser for Skywatcher Refractors
27 February 2024  | 

Beautiful high quality focuser. Thank you.

Rating (max 5):  
A solid investment
17 November 2023  | 

I ordered this from N.S. Canada on a friday night, It was delivered the following thursday just in time for a clear nights astro. Bought for the Starwatcher Star Travel 102. Once the terribad skywatcher focuser was removed. this slid right in and was in place in less than 5 minutes, no hassle, no sanding, no problems. extremely solid build, nicely anodized it has a confidant feel to it. the focuser action itself was a relief to use over the stock 'miss by a mile -both ways" quality that came with the Telescope. Fine focus was a breeze to achieve in comfortable movements, no stickiness no overshoots. The finder shoe displayed for purchase went on with no issues and was a solid fit. I have not used the rotatory function, but I'm sure it will come in handy in the near distant future. this accepted my SVbony field flattenter/focal reducer in the 2" with the copper band compression tube being a perfect addition for anti tilt fitting.
My image train consisted of the FF/FR to an ASI385 at 55mm with a rouz astro active cooling fan, and I encountered no sagging or slippage once focus had been achieved with a batinov mask and the focuser was locked from the underneath.
It is a little heavier than the stock version, but made this telescope a little easier to deal with, without any major guiding issues once calibrated.
I gave this 5 stars because I couldnt give it ten, and any company from Exeter UK that can shift a package to N.S. Canada in 4 working days has my attention! I cant even get that service in my own province..
I read every one of these reviews before buying with no hesitation - Next stop, autofocuser for Chrimbo!
Thanks FLO, for everything!

Rating (max 5):  
Perfect fit on an Evostar 80ED DS-Pro (2021 model)
17 October 2023  | 

Focuser is heavy with a good build quality and really easy to replace (3 screws on the OTA).
When I got mine and attached my camera and filter wheel on it, the focuser was still unable to pull itself up while turning the knobs (slipping), but about 1/8th of a turn on the tension-screw in the middle sorted that out. That was the very reason I wanted to replace the stock focuser.
Be wary that this focuser also changes the focus point entirely though. With the stock focuser, I had focus about 5 cm out, with this I had focus at a little over 1,5cm. Which means I could not use the rotator I bought as the focus point was too far in with the rotator attached. Once I removed the rotator, I had focus at the mentioned 1,5cm.
Would still recommend this one over the stock focuser. Good build quality and a huge improvement over the stock one.

Rating (max 5):  
Bad Fit
06 October 2023  | 

It took quite an effort to fit this focuser to my st 102. Only one hole actually lined up with t the tube flange. Unless you are and accomplished engineer or craftsman donít waste your money.
No matter how I tried the remaining screw holes would not align properly. It would require an enlarging of the two remaining holes to secure the focuser safely. Bad product.


Please send us photos so we can investigate - something doesn't sound right here as these focusers usually fit perfectly.

Rating (max 5):  
Dual speed Crayford focuser for Skywatcher refractors
26 June 2023  | 

First off, thanks to Chris at FLO for the speedy reply to my query about whether this would bolt onto my Celestron refractor. His advice, essentially, was 'keep calm and carry on'. The Crayford arrived about 10 minutes after ordering (not an accurate timing, but I'm am pretty sure FLO's rapid delivery times are violating several laws of physics). The Crayford focuser has a reassuringly solid build and, after a small time fiddling (it is a snug fit) it locked in place. I've lived with the factory standard focuser for a few years now - and finally the small tube movements and slippages were getting more than irritating. This has given my trusty 120mm refractor a new lease of life and contributes greatly to the viewing experience. The focuser is wonderfully smooth, as is the rotator action to bring the whole eyepiece assembly and focuser knobs into a comfortable position. I really don't know why I delayed. An excellent and highly recommended upgrade.

Rating (max 5):  
23 March 2023  | 

I was a little worried about fitting this to my Star-travel 120 after reading other reviews saying that it was a little too large and having to sand down the inside of the tube. However, I needn't have worried. The new focuser fitted absolutely perfectly and it only took me a total of 7 minutes to remove the standard focuser and put on the new one. Beautifully machined, the Crayford is so much smoother, accurate and has no give in it, as the standard focuser did. A rather expensive but totally worth it upgrade. Telescope needs to be re-balanced after fitting the Crayford as it is more sturdy and heavier than the standard Delivery was super fast. As usual. Thank you FLO!

Rating (max 5):  
07 March 2023  | 

Very well built focuser very sharp and smooth recomend

Rating (max 5):  
Great Item but......
23 February 2023  | 

Excellent service from FLO. Thank you. This focuser is a great upgrade for my Skywatcher Startravel 102 but there were issues fitting it to the scope. It's a very very tight fit and at first I didn't think I was going to get it on the scope at all. After several failed attempts to press the focuser into the tube I noticed that some debris had fallen into the tube from the attempts and stuck to the inside of the lens. This took a long careful time to clean out. Then I very carefully went round the inside of the scope tube with a plastic scrubber to get it really smooth and smeared some light grease inside the tube to the depth of the focuser attachment screw holes. After this and with someone holding the tube tightly I tried again to press the focuser in, and failed again. I was on the point of giving up and emailing FLO for advice but I gave it one more last and determined try and I managed finally to work it down into the tube and put the attachment screws in. Then when I put the OTA back on the mount I couldn't balance the scope. The focuser is quite a bit heavier than the original and trying to balance the scope now I ran out of dovetail bar. For all that I would still recommend this upgrade it's a great replacement for the original and works beautifully.

Read all 48 customer reviews...


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