Adjustable Reducer/Flattener (discontinued)

This revolutionary new WO AFR-IV Adjustable Flattener / 0.8x Reducer was made for 500-1000mm refractors.

The Super-Transmission-Coated with 2-element lens system was designed and produced by William Optics, the inner flattener lenses can be set at the optimum 66mm-86mm back focus distance (Distance from flattener lens to film or CCD plane).

This accessory is a must-have for refractor astrophotography.

Lens 
• Designed to cover full size DSLR cameras with clear lens aperture of 50 mm 
• STM coated with an excellent doublet air spaced design.
• Produced entirely with the best Ohara optical glasses. 
• 35mm for full illuminated imaging circle.

Amazing
• It will flatten the field amazingly well and finally make you see those stars round!
• This unique flattener works with WO or other 500-1000mm focal length refractors.

Superb Finish
• Superb William Optics anodized finish.
• All internal surfaces threaded and blackened for no reflections.

Easy to Use 
• Rotating T-ring thread for any 35mm camera. The T-ring adapter is provided with a lock screw and extra lock retaining screws.
• Will accept any standard T-ring for your camera.
• Inserts directly into 2" focuser.

Suitable for
• FLT98, FLT110, FLT132 and many others.

Recommended Distance

• FLT 98 - 76.8 mm

• FLT 110 - 73.5 mm

• FLT 132 - 71.5 mm

• GT 102 - 76 mm

• M90 - 77.3mm