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This revolutionary new WO AFR-IV Adjustable Flattener / 0.8x Reducer was made for 500-1000mm refractors, including the William Optics FLT98, FLT110, and FLT132 refractors.
Super-Transmission-Coated with 2-element, this unit was designed and produced by William Optics. The inner flattener lenses can be set at the optimum 66mm-86mm back focus dsitance by a simple hand twist (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 excellent doublet air spaced design.
• Produced entirely with the best Ohara optical glasses.
Amazing
• It will flatten the field amazingly well and finally let you image round stars!
• This unique flattener works with WOs 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.
Specifications
- High-quality FMC
- Lens-to-chip distance : 66-86mm
- Power : 0.75x ~ 0.8x
- Rotating T-ring adapter
- Clear Aperture : 50mm
- L 84mm : W 77mm : H 123mm
- Weight : 540 g
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