William Optics Flattener 68III

New William Optics Flattener 68III

Innovative new William Optics 68III adjustable field flattener designed for refractors with f/6 to f/7.5 focal ratios. Specifically engineered and CNC machined for use with FLT132, 102GTS, and other William Optics apochromatic refractors, the unique 68III Flattener performs incredibly well, allowing you to see round stars at last!

Lens

• Covers full size 50 mm clear lens aperture DSLR cameras.
• Features superb doublet air-spaced STM coatings.
• Constructed entirely with the finest Ohara optical glasses.
• 1x flattener power (no reduction).
• 45 mm for fully illuminated imaging circle.

Elegant Finish

• Elegant William Optics anodized finish.
• All interior surfaces are threaded and blackened to eliminate reflections.
• Includes protective covers on each side.

Easy To Use

• Accepts any standard M48x0.75 threaded camera T-ring.
• Compatible with William Optics FLT 132 and 102GTS (with 3" focuser), as well as several other refractors with M92x1.0 focuser thread.

Adjustment Distances

• 102GTS: 13.6 mm
• FLT132: 7.7 mm