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Starizona M42 Extension - 15mm

Starizona M42 Extension - 15mm

by Starizona
SKU STZ-EXTM42-15
$6.95 USD - $6.95 USD
$6.95 USD
$6.95 USD - $6.95 USD
$6.95 USD
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  • Adds 15mm of spacing to an imaging train
  • M42 male and female threads
  • Fixed-length for rigid connections
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • Starizona M42 Extension - 15mm

    The Starizona M42 Extension provides a fixed 15mm of spacing, designed for precisely tuning the back focus in your astrophotography imaging train. It features standard male and female M42 threads, allowing it to be inserted between M42-threaded components to achieve the exact distance required by your flattener or reducer.

    Achieving Precise 15mm Back Focus with M42 Threads

    Correct back focus is critical for achieving sharp, flat fields with coma correctors, flatteners, and reducers. This Starizona extension offers a simple and rigid solution for adding exactly 15mm to your optical path, ensuring your camera sensor is positioned at the optimal focal plane.

    • Fixed 15mm Length: Provides a precise, non-adjustable spacing solution that eliminates sources of tilt or flexure that can occur with variable-length adapters.
    • M42 Thread Standard: Connects directly to a wide range of astronomy cameras, filter wheels, and accessories that use this common thread size.
    • Solid Connection: By using a fixed-length tube, you ensure that your imaging components remain perfectly collinear, preserving optical alignment throughout an imaging session.

  • What is the primary use for the Starizona M42 Extension - 15mm?

    This 15mm extension is used to add a specific amount of distance within an astrophotography imaging train. Its purpose is to help you achieve the precise back focus distance required by optical correctors like field flatteners or focal reducers for optimal performance.

    How do I know if I need the 15mm Starizona M42 Extension?

    You may need this extension if the distance between your corrector lens and your camera sensor is 15mm less than the required back focus. For example, if your flattener requires 55mm of back focus and your current setup only provides 40mm, this 15mm extension is designed to fill that exact gap.

    What kind of threads does the Starizona M42 Extension have?

    The extension features male M42 threads on one end and female M42 threads on the other. This allows it to be threaded directly in-line with other M42 accessories in your imaging train.

  • Thread M42 (male/female)
    Length 15mm

    • Starizona M42 Extension - 15mm

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  • Starizona Warranty