This revolutionary new WO AFR-IV Adjustable Flattener was made for 500-1000mm refractors.
Super-Transmission-Coated with 2-element unit was designed and produced by William Optics, the inner flattener lenses can be set at the optimum 66mm-86mm back focus by 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 54 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 make you see those stars round!
- This unique flattener works with WO's 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
- M90, FLT98, FLT110, FLT132 and many others.
This revolutionary new WO AFR-IV Adjustable Flattener was made for 500-1000mm refractors.
Super-Transmission-Coated with 2-element unit was designed and produced by William Optics, the inner flattener lenses can be set at the optimum 66mm-86mm back focus by 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 54 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 make you see those stars round!
- This unique flattener works with WO's 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
- M90, FLT98, FLT110, FLT132 and many others.
