Sky-Watcher Quattro Imaging Newtonian Coma Corrector - S20204

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Item #SKYW-S20204

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  • Four-element ED Corrector erases coma inherent in all Newtonian telescopes
  • Made specifically for the Quattro Imaging Newtonians
  • The Quattro Coma Corrector requires 55mm of back focus
  • Nikon and Canon adapters are available optionally
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  • Description

    Thinking about a Sky-Watcher Quattro Imaging Newtonian?  Add this Quattro Coma Corrector to the system for pinpoint star images to the edges of the field.  

    Correct the coma inherent in Newtonian parabolic mirrors

    Newtonians are wonderful telescopes!  They are simple and easy to use, are way more cost effective than more complicated optical designs, and because Newtonians use mirrors instead of lenses, no extra color is introduced to the image.  However, everything comes at a price, and one of the prices to pay for owning a Newtonian is the coma, or comet-shaped stars, that appear along the edges of the field of view in parabolic mirrors.    However, there is an easy solution to comatic aberration, and that solution is a coma corrector.

    Sky-Watcher has designed a coma corrector specifically for the Quattro line of imaging Newtonians.   The four-element ED corrector is made with FPL51 fluorite and Schott glass, for beautiful pinpoint stars to the edge of the field without altering the magnification.  The Quattro Coma Corrector requires 55mm of back focus, and has a 48mm thread mount.   Nikon and Canon adapters are available separately.

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  • Dimensions & Specifications

    Number of Elements:


    Glass Type:

    Schott and FPL5

    Required Back Focus:




    Magnification Added:


    Compatible With:

    All Sky-Watcher Quattro Imaging Newtonians

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