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Starizona Apex ED Esprit 120/150 Threaded Extension

Starizona Apex ED Esprit 120/150 Threaded Extension

by Starizona
SKU STZ-EXT-120150-2
$49.95 USD - $49.95 USD
$49.95 USD
$49.95 USD - $49.95 USD
$49.95 USD
Price Match Policy!
  • Adds 2" of spacing for correct focus
  • For SkyWatcher Esprit 120 and 150 telescopes
  • Designed for the Starizona ApexED 0.65x Reducer
  • Threads directly onto the focuser for a secure connection
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • Apex ED Esprit 120/150 Threaded Extension

    The Starizona Apex ED Esprit 120/150 Threaded Extension adds a critical 2" of spacing, making it a required component for imagers using the Starizona ApexED 0.65x reducer with a SkyWatcher Esprit 120 or 150 refractor. This extension is engineered to solve a specific back focus problem where the reducer must be positioned farther from the optical tube than the stock focuser's drawtube can accommodate.

    A Required 2" Extension for ApexED Reducers on Esprit Telescopes

    When pairing the fast 0.65x ApexED reducer with the premium Esprit 120 and 150 optical tubes, the standard focuser travel is insufficient to achieve a sharp image. This threaded extension provides the necessary 2" of additional spacing between the focuser body and the Apex threaded adapter. By threading directly onto the focuser, it creates a rigid, secure, and perfectly square connection for your imaging train, preventing any tilt or flex that could compromise your final image.

  • Why is the Apex ED Threaded Extension required for the Esprit 120 and 150?

    The Starizona ApexED 0.65x reducer needs to be placed at a specific distance from the telescope's optics to function correctly. On the SkyWatcher Esprit 120 and 150 models, the focuser's drawtube is not long enough to achieve this distance on its own. This 2" extension provides the necessary spacing to reach focus.

    How does the Apex ED Threaded Extension attach to my Esprit telescope?

    The extension threads directly onto the focuser of the telescope. This ensures a secure, non-flexing attachment point for the rest of your imaging train, which is critical for maintaining optical alignment and achieving sharp stars across the field.

    Can I reach focus on my Esprit 150 with the ApexED 0.65x reducer without this extension?

    No. This 2" extension is required to reach focus when using the ApexED 0.65x reducer with the SkyWatcher Esprit 120 and Esprit 150 telescopes.

  • Compatibility SkyWatcher Esprit 120 & 150 with Starizona ApexED 0.65x Reducer
    Extension Length 2"

    • Apex ED Esprit 120/150 Threaded Extension

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  • Starizona Warranty