William Optics Adjustable Field Flattener 68III # P-FLAT68III
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Product Details
This revolutionary new WO FF68III Adjustable Flattener was made for 6 -7.5 F ratio refractors.
This high-quality flattener has been engineered and CNC machined for usage with our FLT 98, 110, 120, 132, GT102 and other APO refractors.
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 an excellent doublet air spaced design.
- Produced entirely with the best Ohara optical glasses.
- Flattener Power: 1x (no reduction).
- 45mm for full illuminated imaging circle.
Amazing
- It will flatten the field amazingly well and finally make you see those stars round!
- This unique flattener works with WO or other 6-7.5 F ratio refractors.
Superb Finish
- Superb William Optics anodized finish.
- All internal surfaces threaded and blackened for no reflections.
- Protecting covers are included on both sides.
Easy to Use
- Will accept any standard T-ring for your camera (thread size M48x0.75). Not for use with smaller 42mm M42x0.75 T rings.
- Suitable for GT81 WIFD, FLT98, FLT110, FLT120, FLT132, GT102 (with 3" focuser) and many others refractors with focuser M92x1.0 thread.
Adjuster Specifications:
- Adjustment distance for GT81 WIFD: 2mm (requires this additional adapter)
- Adjustment distance for FLT91: 5mm (requires this additional adapter)
- Adjustment distance for FLT120: 10.7mm
- Adjustment distance for FLT132: 7.7mm
- Adjustment distance for FLT156: 2.6mm
- Adjustment distance for GT102: 13.6mm
- Adjustment distance for GT153: 2.8mm
- Adjustment distance for Z126: 3.0mm
Specifications:
- Weight: 820g / 29oz.
Additional Information
Flattener Installation
Filter Installation
T-Ring Installation
Adjusting Distance
Other Information
- Country of Manufacture: Taiwan
