William Optics SpaceCat 61 WIFD f/4.9 Petzval Apo Refractor Telescope
The new William Optics SpaceCat 61 is the latest in William Optics' line of flattened Petzval refractor telescopes, offering a flat image across a large sensor for unmatched quality across even a full frame sensor. Illuminates a full frame sensor! Also featuring William Optics' patented internal focusing system, compatible with the ZWO EAF.
NEW internal focuser.
Our new design includes the Patented WO centre focuser with precise internal sliding of fixed optics to prevent image shift. The integrated position viewing window on the focuser provides instant verification of the graduated numerical display. The smooth rack and pinion design is incorporated into the focuser to provide super fine adjustability for critical focus. The internal movement of the optical elements is protected from the elements and can’t come out of alignment. The redistribution of weight allows for better balance during imaging sessions.
The smooth rack and pinion design is incorporated into the focuser to provide super fine adjustability for critical focus. The user can enjoy the benefits of a traditional two speed fine focuser, while not worrying about limitations typically found in traditional rear mounted focusers. The redistribution of weight allows for better balance during imaging sessions. Compatible with ZWO EAF. Also new Electric Rotator will be available in near future.
CAT DESIGN
Improved “CAT” design ring tubes and dovetail base are lighter while remaining equally rigid. The new design allows for better balance with heavy accessories, and has integral placement of the focuser knobs, providing easy access to focusing during imaging. Included is the popular WO Saddle Bar Handle, critical for rigid guidescope mounting and autoguiding performance.
Super Smooth Field Rotator. Our field rotator design features smooth camera rotation with markings for degrees and a locking thumbscrew to prevent accidental camera movement, also new Electric Rotator will be available in near future.
Specifications: William Optics SpaceCat 61 WIFD f/4.9 Petzval Apo Refractor Telescope
Lens Type: Petzval Design
Focal Length:300mm
Diameter: 61mm
Aperture: f/4.9
Image circle: 46mm FF
Flattener: Petzval Flat Field
Focuser: WIFD (WO INTERNAL FOCUS DESIGN) Compatible with EAF
Lens Material: FPL-53
Camera Format: Full Frame DSLR Mirrorless CMOS CCD
T-Mounts Supported: Canon EF, RF Nikon F, Z Sony E Pentax K Micro Four Thirds (M4/3) FUJI X
Tube Length: 365mm
OTA Weight: 5.43lbs / 2.465kg
Total Weight: 7.47lbs / 3.390kg
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