William Optics Adjustable Flat6A III 0.8x Reducer / Flattener

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About this product

Adjustable Reducer / Flattener for William Optics GT71, GT81, ZS103 and ZS126 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 - 7.1mm
• GT81 - 5.1mm
• Z81 - 3.2mm
• ZS103 - 0.5mm

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:

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