William Optics RedCat 61 / 300 mm f/4,9 APO.
1,069.00
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William Optics RedCat 61 / 300 mm f/4,9 APO.
William Optics RedCat 61 / 300 mm f/4,9 APO.
This latest introduction to the popular RedCat family features 61mm Petzval optics, a fast f/4.9 focal ratio, and William Optics' new WIFD dual-speed internal focusing mechanism for zero drawtube flexure.
The fully multicoated Petzval optics include two synthetic fluoride (FPL53 and FPL51) ED glass elements that deliver a full-frame, flat-field image with negligible chromatic aberration.
The new WIFD internal focusing mechanism eliminates flexure on the drawtube and is compatible with the ZWO EAF.
With its compact size and fast f/4.9 focal ratio, the RedCat 61 is an excellent choice for convenient wide-field astrophotography or piggybacking.
Other features include a field rotator, a slot for 48mm filters, a reversible dovetail for either Vixen-style or Arca-Swiss mounting and a Cat Handle with a saddle that accepts William Optics Uniguide/Slide Base Guidescopes.
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Key Features
- High-Quality Petzval 4-Element Optics with FPL-53 & FPL-51 ED glass, delivering a full-frame, flat-field image with minimal chromatic aberration.
- Fast f/4.9 Focal Ratio – Ideal for capturing deep-sky images with stunning wide-field clarity.
- WIFD Internal Focuser – Ensures tilt-free focusing, eliminating flexure and backlash, with direct ZWO EAF compatibility for seamless motorized autofocus.
- Compact & Lightweight Design – Perfect for portable setups and piggyback mounting on larger telescopes.
- Built-in 48mm Filter Slot – Easily integrate 2" filters for advanced imaging.
- Integrated Field Rotator – Precisely adjust your framing for optimal composition.
- Universal Mounting System – Reversible dovetail for both Vixen-Style & Arca-Swiss compatibility.
- Cat Handle with Guide Scope Saddle – Directly mount a William Optics Uniguide/Slide Base Guide Scope.
What's in the Box?
- RedCat 61 WIFD Refractor with internal focusing system
- Bahtinov Mask integrated into the dust cap
- Removable Dew Shield
- Cat Handle with accessory saddle
- Built-in Field Rotator
- 48mm Filter Slot
- Reversible Vixen-Style / Arca-Swiss Dovetail Mount
Technical Specifications
- Optical Design: 4-Element Petzval
- Glass Type: FPL-53 / FPL-51
- Aperture: 61mm
- Focal Length: 300mm
- Focal Ratio: f/4.9
- Image Circle: 45mm (Full-Frame)
- Focuser: William Optics Internal Focus Design (WIFD)
- Focuser Compatibility: ZWO EAF
- Mounting System: Vixen-Style & Arca-Swiss
- Weight: Ultra-portable and optimized for lightweight mounts
Why Choose the RedCat 61 WIFD?
- Exceptional optical performance with full-frame, flat-field imaging
- Hassle-free focusing with an internal tilt-free focuser
- Portable & versatile – Ideal for mobile astrophotography & piggyback setups
- Direct compatibility with ZWO EAF and 48mm filters
William Optics RedCat 61