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Starizona M48 Extension - 12mm
Starizona M48 Extension - 12mm
Starizona M48 Extension - 12mm
Starizona M48 Extension - 12mm

Starizona M48 Extension - 12mm

by Starizona
SKU STZ-EXTM48-12
$4.95 USD - $4.95 USD
$4.95 USD
$4.95 USD - $4.95 USD
$4.95 USD
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  • Adds 12mm of spacing to an imaging train
  • M48 male and female threads for wide compatibility
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • Starizona M48 Extension - 12mm

    The Starizona M48 Extension is a simple, high-precision component designed to add exactly 12mm of length to your M48-threaded imaging train. This spacer is essential for achieving the specific back focus distance required by optical correctors like field flatteners and coma correctors, ensuring your stars are sharp across the entire field of view.

    Achieving 12mm of Precise Back Focus

    Every reducer, flattener, or corrector has a manufacturer-specified back focus—the exact distance from the corrector's flange to the camera sensor for optimal performance. This Starizona M48 extension provides a fixed 12mm of spacing, allowing you to bridge a gap in your imaging train and hit that critical distance. With male threads on one end and female threads on the other, it installs directly between other M48 components like filter wheels, off-axis guiders, or other spacers to dial in your configuration.

  • What are the threads on the Starizona M48 Extension - 12mm?

    The extension features male M48 threads on one side and female M48 threads on the opposite side, allowing it to be inserted anywhere in a standard M48 (2-inch filter thread) imaging train.

    How much spacing does this Starizona M48 extension provide?

    This extension tube adds a precise optical path length of 12mm. It is designed for situations where you have calculated your current spacing and find you are exactly 12mm short of the required back focus for your corrector.

    How do I know if I need the 12mm Starizona M48 Extension?

    You need this extension if the total back focus of your current imaging train (camera flange, filter wheel, off-axis guider, etc.) is 12mm less than the distance required by your field flattener or reducer. Always measure your existing components and subtract that total from the required back focus to determine the spacing needed.

  • Thread M48 (male/female)
    Length 12mm

    • Starizona M48 Extension - 12mm

      × 1

  • Starizona Warranty