The FF107 includes two Extra Low Dispersion glass elements for superb chromatic aberration correction. The FF107 is compatible with full frame cameras such as the ASI6200, with a center RMS radius of only 3 microns.
Unlike standard ED refractors, the FF107 features a Petzval design that does not require the sensor to be set at a specific distance from the last lens. This leaves the freedom to use any filter wheel, any off-axis guide or accessory without worrying about calculating the correct distance from the flattener.
With a large 44mm image circle and a focal ratio of f/7, this is the perfect astrophotographer for the advanced astrophotographer.
The large 3.4" rack and pinion focuser is natively compatible with the ZWO EAF without the need for additional adapters, and can be rotated 360° to perfectly frame the subject and has a 10:1 reduction gear for precise focusing.
All lenses are fully multi-coated and the tube is internally flocked to reduce reflections and absorb stray light.
The tube is CNC machined aluminum, the rack and pinion focusing mechanism is brass and the mechanical components are designed to provide the best rigidity, performance and durability.
SPECIFICATIONS:
- Optical design: air-spaced quadruple apochromatic
- Lens diameter: 107 mm
- Focal Length: 749 mm
- Focal Ratio: f/7
- Resolving Power: 1.29 arcseconds
- Stellar limiting magnitude: 12.85
- Maximum magnification: 267 x
- Light Gathering Power: 234 times the human eye
- Attachment: Dovetail plate style Vixen (300 mm length)
- Focuser: Double speed rack and pinion (10:1) 34" diameter
- Connecting adapters included: M86 x 1, M68 x 1, M54 x 0.75, M48 x 0.75 (with 2" filter thread)
- Back focus: 168.5 mm from M86 thread, 155 mm from M68 thread, 135 mm from M54 thread, 115 mm from M48 thread
- Tube weight: 6.9 kg (including tube rings and dovetail bar)
- Tube diameter: 123 mm
- Diameter of dew protection: 138 mm
- ZWO FF107
- Pair of tube rings
- Dovetail bar style Vixen
- Carrying handle
- Adapter M86 x 1 to M68 x 1
- Adapter M68 x 1 to M54 x 0,75
- Adapter M54 x 0.75 to M52 x 0.75
- Adapter M52 x 0.75 to M48 x 0.75 with filter thread 2
- Manual
