This revolutionary new WO AFR-IV Adjustable Flattener / 0.8x Reducer was made for refractors with a focal length of 500-1000mm, 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.
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.
It will flatten the field amazingly well and finally let you image round stars!
This unique flattener works with WO's or other 500-1000mm focal length refractors.
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.
FLT98, FLT110, FLT132 and many others.
- 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