WILLIAM OPTICS ULTRA-CAT 108 f/4.8 REFRACTOR

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.

Diagram Report

SPECIFICATIONS