Home Ultra-Cat 108 WIFD
Ultra-Cat 108 WIFD

    William Optics

    Ultra-Cat 108 WIFD

    $ 3,598.00
    $ 3,598.00

    This item is out of stock but you can place an order now and we’ll ship when it becomes available.

    Coming Soon - End of Q1 2025

    OVERVIEW

    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.

    SPECIFICATION

    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 Corrector
    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
    Total Weight
    N/A

    Personal Upgrade Path

    Buy risk-free: When it’s time to trade up you’ll get the most value for your used gear.

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