William Optics Adjustable Flattener for ZS61
 William Optics Adjustable Flattener for ZS61William Optics Adjustable Flattener for ZS61 

William Optics Adjustable Flattener for ZS61

  (10 Reviews)
✓ 2 year warranty


2x in stock shipped 1-2 working days

About this product

Model:  wo-flattener-ZS61A
Part Number:  P-FLAT61A

New Adjustable Dedicated Flattener for William Optics ZS61

Optically-matched 1:1 Flattener for ZS61 APO

Integrated camera rotator.

Internal thread accepts 2" astronomy filters.

Requires an M48 threaded T-ring if using a DSLR camera.

Recommended distance for the ZS61 is 12.9mm

Customer reviews

Average Rating (10 Reviews):  
Write a Review and share your opinions!

Rating (max 5):  
William Optics adjustable field flattener for GuideStar 61
01 June 2023  | 

This adjustable flattener works fine. It is definitely required for the GuideStar 61 as focus could not be achieved without it.

Rating (max 5):  
Excellent addition
03 May 2022  | 

Bought this to go with my WO Zenithstar ZS61 and it marries seamlessly with the scope and provides a nice adjustable backfocus. Was a little mystified at first as to why it wouldn't rotate, but after chatting to the team at FLO it was noted that the clutch screws were over tight and after loosening them a fraction of a turn the unit allowed me to rotate my camera orientation. Great service for FLO and speedy delivery.

Rating (max 5):  
Good quality product
19 July 2021  | 

The adjustable flattener has the usual William Optics quality feel about it. It gives secure attachment for my Canon and Fuji cameras, when used with the appropriate adapters, and has allowed me to capture crisp images now that we have finally had some clear skies.

Rating (max 5):  
Does the job
05 July 2021  | 

It works fine, does what itís supposed to do. The tension screws really need unscrewing a lot before it can be rotated to set the framing angle but once discovered, it does work. It would be useful if either William Optics website or FLO mentioned that rotation was possible and how to do it.

Rating (max 5):  
ZS 61 flattened
17 June 2021  | 

As with all William Optics quality, quality quality.

Rating (max 5):  
William Optics Adjustable Flattener for ZS 61.
22 March 2021  | 

I bought this Flattener as it has been designed for the above scope,and could be directly screwed directly onto the scope,theifore eliminating any slippage, or off axis alighnment that can occur when using a flattener that is a push in and grip method.
Again with WO the fit and finish is second to none,and the adjustabilty to be able to set easily the back focus is a real game changer.
Another nice touch is that the Flattener can also be rotated in order to be able to frame your targets better.
I would,nt be without it,and to me it justifys the extra cost ,and i can thoroughly recommend it.

Rating (max 5):  
Fantastic optics
12 February 2021  | 

Great quality scope, using it on my nexstar mount at moment getting 60 second exposures, canít fault service from FLO, highly recommended.

Rating (max 5):  
Indispensable for WO61.
03 February 2021  | 

I've used cheap third party 1x flattener before and couldn't get field corrected on APS-c size sensor. I've decided to buy dedicated one. What a difference. Perfect stars across the field of APS-c. Will try with full frame soon.
Don't hesitate. Get one for yourself

Rating (max 5):  
As expected A1
22 July 2020  | 

Well made as expected from William Optics. But why no instructions? Easy tofind on website but would expect at least a leaflet at this pricd. Thanks FLO for good service as usual.

Rating (max 5):  
Fast and efficient service.
14 May 2020  | 

Great service from FLO delivery was very quick. The item was well packaged to prevent damage to the high quality flattener.


Please fill in the form below to ask a question.

Please add the two numbers

Related Products
William Optics DSLR-M48 Ring Adapter
Sky-Watcher DSLR-M48 Ring Adapter
William Optics GuideStar 61
William Optics Zenithstar 61 II APO