William Optics Adjustable Flat6A III 0.8x Reducer / Flattener
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William Optics Adjustable Flat6A III 0.8x Reducer / FlattenerWilliam Optics Adjustable Flat6A III 0.8x Reducer / FlattenerWilliam Optics Adjustable Flat6A III 0.8x Reducer / Flattener
William Optics Adjustable Flat6A III 0.8x Reducer / FlattenerWilliam Optics Adjustable Flat6A III 0.8x Reducer / FlattenerWilliam Optics Adjustable Flat6A III 0.8x Reducer / Flattener

William Optics Adjustable Flat6A III 0.8x Reducer / Flattener

£179.00
  (3 Reviews)
✓ 2 year warranty

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About this product

Model:  wo_p-flat_6aiii
Part Number:  P-FLAT6AIII

Adjustable Reducer / Flattener for William Optics GT71, GT81, ZS103 Telescopes

This elegantly designed 2" reducer / flattener has been designed to optimise the flat-field imaging performance of William Optics f/6 to f/7.5 refractors.

Provides good illumination and a flat field across 97% of a full frame sensor field of view.

Attaches directly to telescopes with an M63 thread on the end of the focuser. 

Internal thread accepts 2" astronomy filters.

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

Large Sensor Illumination 

  • Designed with nearly Full frame chip-size DSLR cameras in mind. 
  • FMC Triplet APO design.
  • Produced entirely with the best Ohara optical glasses. 

Versatile

  • Reducing factor 0.8x.
  • Adjustable design, for perfect back focus it can be used with other models of refractor
  • 48mm filter ready

Superb Finish

  • William Optics usual high quality fit & finish.
  • All internal surfaces threaded and blackened to prevent reflections.

Easy to Use  

  • Will accept any standard 48mm T-ring for your camera.

Adjustable distance:

  • GT71 - 9.1mm
  • GT81 - 7.1mm
  • Z81 - 5.2mm
  • ZS103 - 2.5mm

Note: Not suitable for use with the William Optics V-power focuser which requires a flattener with 2" nosepiece (i.e FLat6a-II or FLat6a). 

Dimensions:

 

Customer reviews

Average Rating (3 Reviews):  
Write a Review and share your opinions!
Rating (max 5):  
Excellent flattener
Saturday, 3 October 2020  | 

High quality gear and easily adjustable to get the correct spacing according to the OTA it is used on.

Rating (max 5):  
Space Grey
Friday, 25 September 2020  | 

Pure quality as always from WO and great service from FLO, also it came in space grey as my scope is how lucky was I.

Rating (max 5):  
William Optics Adjustable Flat6A III 0.8x Reducer / Flattener
Sunday, 22 March 2020  | 

I have finally had the opportunity to try this out in combination with an older - Zenithstar -Williams 110 mm F 7.0 refractor. Connection required the M63 adapter nosepiece. The reducer/ flattener does an excellent job. Nice round stars right to the edge of a field that has increased just as expected for 0.8X reduction. FLO did an excellent job of sorting out the adapter problem (which I hadn't originally appreciated) and chasing it up for me as soon as it came available.

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