William Optics Ultra-Cat 108 WIFD
| Availability: | More on the Way to us |
| Delivery time: | Preorder Now to reserve one! |
William Optics Ultra-Cat 108 WIFD
The William Optics UltraCat108 is a cutting-edge 108mm apochromatic refractor designed for astrophotographers who demand top-tier performance. Featuring a 5-element advanced Petzval optical design and a fast f/4.8 focal ratio, it delivers breathtaking edge-to-edge clarity and vivid detail, making it perfect for capturing expansive celestial views. Its robust build, exceptional optics, and innovative features redefine the standard for astrophotography.
Key Features:
- Advanced 5-Element Petzval Design: Eliminates field curvature, providing sharp, flat-field images without requiring additional flatteners.
- 60mm Superior Image Circle: Fully supports full-frame and medium-format cameras for wide-field and detailed astrophotography, outperforming standard 106mm telescopes.
- F/4.8 Fast Optics: Offers exceptional light-gathering capability for vibrant deep-sky photography.
- WIFD (William’s Internal Focuser Design): Patented internal focuser ensures precise, stable, and hassle-free imaging, avoiding balance issues and eliminating vignetting.
- Anti-Shrink Lens Cell Technology: Minimizes thermal expansion and contraction, maintaining perfect optical alignment in any environment.
- Sensor Tilt Corrector: Integrated and patented design eliminates distortion, optimizing sharpness and detail for professional-level results.
- Built-In Patented Bahtinov Mask: Simplifies focusing for pinpoint precision, a feature that sets it apart from competitors.
- Patented Handle Bar Design: Combines ergonomic usability with enhanced portability.
- Personalized Laser Engraving: Free customization for direct purchases, adding a personal touch to your telescope.
| Specification | Details |
|---|---|
| Lens Type | 5-Element Advanced Petzval |
| Lens Elements | Super ED Glass x2, ED Glass x1, Lanthanum Glass x1, X-Element x1 |
| Focal Length | 518 mm |
| Diameter | 108 mm |
| Focal Ratio | f/4.8 |
| Image Circle | 60 mm |
| Focuser | WIFD R&P Focuser, Compatible with EAF |
| Adapter Included | Sensor Tilt Xterminator, Rotator, M68, M54, M48 Camera Adapters |
| Optional Flattener | No Flattener Required |
| T-Mount Supported | Canon EF, RF; Nikon F, Z; Sony E; Pentax K; MFT (M4/3); FUJI X |
| Camera Format | Medium Format, Full Frame, APS-C, M4/3 |
| Tube Length | 510.5 mm - 588.5 mm |
| OTA Weight | 7.95 kg / 17.53 lbs |
Image and Diagrams
The Arrival of Innovation – STX
At William Optics, we constantly strive to refine and enhance the astrophotography experience. Today, we are excited to introduce the Sensor Tilt Xterminator (STX)—a major evolution in sensor tilt adjustment, designed to provide astrophotographers with a faster, more precise, and user-friendly solution for achieving perfect optical alignment.
A Smarter, More Efficient Tilt Adjustment System
The STX builds upon the foundation of traditional sensor tilt adjusters, offering a streamlined and intuitive design that eliminates the need for cumbersome disassembly. Unlike conventional systems that require camera removal for tilt correction, the STX allows adjustments to be made directly from the side of the assembly, significantly reducing setup time and enhancing ease of use.
By refining the original 4 pull-in and 8 push-out screw configuration into a more efficient 4 push-out and 4 locked screw system, the STX enables precise and controlled adjustments. Operating like a seesaw mechanism, the system allows for effortless corrections—simply loosen one screw and tighten the opposite diagonal screw to achieve fine tilt alignment. This ensures that astrophotographers can make on-the-fly refinements without disrupting their imaging workflow, maintaining pinpoint star performance across the entire frame.
Ultra-Cat 108 Release Update
As we integrate this cutting-edge adjustment system into the Ultra-Cat 108, we are committed to upholding the highest standards of precision and craftsmanship. However, to ensure every unit meets our exacting quality requirements, we must extend the release timeline beyond our original launch date. While we understand the anticipation surrounding the UltraCat 108, our priority remains delivering an uncompromising astrophotography experience.
We appreciate your patience and support as we finalize production. Stay tuned for further updates, and thank you for being part of the William Optics journey—where innovation meets excellence in astronomical imaging.
