Astro Essentials Compression-Ring adapter for Sky-Watcher Refractors (M56)
 Astro Essentials Compression-Ring adapter for Sky-Watcher Refractors (M56)Astro Essentials Compression-Ring adapter for Sky-Watcher Refractors (M56) 

Astro Essentials Compression-Ring adapter for Sky-Watcher Refractors (M56)

  (22 Reviews)
✓ 2 year warranty


23x in stock shipped 1-2 working days

About this product

Model:  ae_adptr_1016

Screws directly to the M56 thread on the Sky-Watcher 80ED, 100ED & 120ED focuser drawtube. 

The brass compression-ring firmly grips any accessory with a 2" nosepiece. 

Easy to fit: Simply unscrew the existing eyepiece/accessory holder then screw this one on. 

Also suitable for equivalent Celestron and Orion telescopes. 

Optical length: 13.6mm.

Customer reviews

Average Rating (22 Reviews):  
Write a Review and share your opinions!

Rating (max 5):  
Bad quality
26 September 2023  | 

The compression ring fell off after first use and lost it in the filed. Waste of money


We have sold hundreds of these and have nothing but positive reviews so it is dissapointing to see this negative review, particularly as you haven't contacted us first - we would've happily supplied you a replacement brass part.

For the record, these can only fall out if overtightened or not undone enough when not in use otherwise the brass will keep itself sprung into the recess.

I also cannot find a record of you purchasing one of these from us - are you sure it was this item that you had difficulty with?

Rating (max 5):  
Better than original
22 July 2023  | 

Bought because I was not happy with the one on the telescope, this one has a compression ring which makes an much better fit when using camera's costing hundreds of pounds.

Rating (max 5):  
Very high quality product!
11 March 2023  | 

Excellent product.

Rating (max 5):  
Works a treat
10 January 2023  | 

After a long search for the correct adapter I finally found this product, mainly thanks to the short description of it that FLO provided. I think some websites fail to describe these things properly and as a result probably miss out on business if a frustrated customer doesn't know specifically what to look for. I nearly gave up on the search but then I found this and it fits perfectly on my ED80. I think part of the problem is the name of the product (is it a visual back, an M56 adapter, or an adapter coupling as Takahashi seem to call it?). In any case this works much better than the one supplied with the telescope, which, due to the inadequate thumbscrews, was causing the diagonal to slip. This produce holds the diagonal and eyepiece very secure due to the compression ring and has the added bonus that it doesn't mark the nosepiece of any diagonals or eyepieces held by it. Recommended.

Rating (max 5):  
Essential accessory for SkyWatcher ED refractor
05 January 2023  | 

I bought this to fit on my SkyWatcher 80mm ED refractor telescope. Nicely engineered accessory in a black, knurled finish. The compression ring grips my Baader 2" to 1.25" adaptor firmly without marking it. SkyWatcher should fit one of these as standard.
As always, a very efficient, trouble-free transaction with F.L.O.

Rating (max 5):  
31 December 2022  | 

Well made replacement for stock holder with set screws. Brass compression ring works great, no marring.

Rating (max 5):  
Well finished product, performance was of concern in certain situations.
30 October 2022  | 

As in previous reviews a very well engineered product, very well finished and easy to fit.
For visual use I found no problem at all. but if used with a 2" nosepiece and a heavy camera, I did find rather susceptible to slip and tilt.
I did not feel confident that it would hold a camera securely.


The same is true with any compression ring fitting and a heavy camera payload - we always recommend a fully threaded train for imaging wherever possible.

Rating (max 5):  
Fits my ED80SF
17 May 2022  | 

I bought this to replace the focuser adapter on my Vixen ED80SF. It fits perfectly, and I now have a more-secure method of attaching my camera.

Rating (max 5):  
M56 Compression ring adapter
10 March 2022  | 

Decent lightweight adapter to replace the supplied one with my Skywatcher Evostar 120/1000 which was marking up my expensive eyepieces. Simply unscrewed the existing adapter and screwed onto my drawtube. Good solid grip on my 2 diagonal and rock steady. The shorter build also provides more in focus travel. Next day delivery and excellent service from FLO once again

Rating (max 5):  
Astro Essentials compression ring for Skywatcher Refractors M56
20 April 2021  | 

This is a considerable upgrade to the 2 adapter supplied with my SW Startravel 120. Easy to fit and now anything connected to it is held securely. It is also worthy of note that this is slightly slimmer than that fitted as standard and therefore will not interfere with the amount of focus. (It actually gives a couple of mm extra in-focus.)
Before ordering the item I asked questions of FLO and their response was always prompt and informative.

Read all 22 customer reviews...


Please fill in the form below to ask a question.

Please add the two numbers

Related Products
Sky-Watcher Evostar 80ED DS-Pro Outfit
Sky-Watcher Evostar 100ED DS-Pro Outfit
Sky-Watcher Evostar 120 OTA
Sky-Watcher Evostar 120ED DS-Pro Outfit
Sky-Watcher Evostar 102 (EQ3-2)
£359.00  £399.00
Sky-Watcher Evostar 80ED DS-Pro & HEQ5 PRO

Christmas at FLO:    Extended Returns    |    Last Delivery Dates    |    Astronomers Gift Guide    |    Kids Gift Guide    |    Beginners Telescope Guide    |    New Telescope Accessory Guide    |    Gift Vouchers