William Optics field flattener P-FLAT68III

This revolutionary new William Optics Adjustable Flattener 68III is made for refractor of focal ratio f/6 – f/7.5.

This high-quality flattener has been engineered and CNC machined for usage with our FLT 98, 110, 132, GT102 and other APO refractors.

This high quality accessory is a must-have for advanced refractor astrophotography.

High quality reducer for serious astrophotographers

• Designed to cover full format 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 from Japan
• 1.0x flattener power (no reduction)
• 45mm for fully illuminated imaging circle