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William Optics RedCat 51 Gen II U APO f/4.9

William Optics RedCat 51 Gen II U APO f/4.9

by William Optics
SKU WO-L-RC51II-U
Save 5% Save 5%
$865.00 USD
$865.00 USD - $865.00 USD
$865.00 USD
$821.75 USD
$821.75 USD - $821.75 USD
$821.75 USD
  • Portable 51mm f/4.9 Petzval APO refractor
  • Ideal for wide-field deep sky astrophotography
  • Full-frame 43mm flat field imaging circle
  • Includes a field rotator, a Bahtinov mask and a 2" imaging filter holder
  • Easy camera installation
  • Portable and Versatile
Availability:
1 in stock

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More information
  • Description
  • Specifications
  • In the Box

  • The William Optics RedCat 51mm telescope is renowned for its exceptional optics, featuring a well-designed, multi-element optical system. Its 51mm aperture, combined with a short 250mm focal length at a fast f/4.9 ratio, allows for impressive light-gathering capability and stunning wide-field images of the night sky. Its ultra compact size makes it the perfect companion to the nomad astrophotographer!

    Disclaimer

    Not for visual use:
    Unlike previous versions of the RedCat, this II-U version can't be used visually. The WO-D-EP90-125-RC51-SL erecting prism will not fit.

    Fast and sharp optics

    One of the most notable optical features of the RedCat 51 is its integrated field flattener, which effectively corrects field curvature over a 43mm imaging circle, ensuring pinpoint sharpness of stars and objects across the entire field of view. The telescope's sophisticated multi-element optics composed of high quality synthetic fluorite FPL-53 and FPL-51 glass are meticulously designed to minimize chromatic aberration, resulting in crystal-clear renditions of deep sky objects.

    • Exceptional image sharpness and contrast
    • Reduced chromatic aberration and distortion
    • Increased light transmission for brighter images
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    Convenient and Portable

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    The Redcat 51 Gen II U APO is designed to be portable and versatile, making it easy to take with you on your astrophotography adventures. Its compact size and lightweight design allow for easy setup and transport, while its robust construction ensures durability and stability.

  • Lens Type

    Apochromatic Petzval

    Focal Length

    250mm

    Diameter

    51mm

    Aperture

    f/4.9

    Color

    Red

    Lens Material

    FPL-53 and FPL-51
    • William Optics Redcat 51mm Gen II U APO Refractor Telescope
    • 2" Filter Holder
    • Bahtinov Mask
    • Field Rotator
    • Soft Carry Case
    • Instruction Manual