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Starlight Instruments Feather Touch Micro Focuser for Celestron CPC9.25, C9.25 Edge HD, SCT
Starlight Instruments Feather Touch Micro Focuser for Celestron CPC9.25, C9.25 Edge HD, SCT
Starlight Instruments Feather Touch Micro Focuser for Celestron CPC9.25, C9.25 Edge HD, SCT

Starlight Instruments Feather Touch Micro Focuser for Celestron CPC9.25, C9.25 Edge HD, SCT

by Starlight Instruments
SKU SI-FTM-CPC9.25
CA$504.00 - CA$504.00
CA$504.00
CA$504.00 - CA$504.00
CA$504.00
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  • Replaces stock focuser knob with a dual-speed system
  • Eliminates image shift and mirror flop common in SCTs
  • Planetary reduction mechanism for ultra-fine adjustments
  • Direct fit for Celestron 9.25" SCTs with triangular back cells
  • Designed and manufactured in the USA
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • Starlight Instruments Feather Touch Micro Focuser for Celestron CPC9.25, C9.25 Edge HD, SCT

    The Starlight Instruments Feather Touch Micro Focuser replaces the standard, single-speed focusing knob on Celestron 9.25" Schmidt-Cassegrains, completely solving the image shift and coarse adjustments that limit these excellent optical systems. This upgrade installs a dual-speed, zero-backlash planetary reduction system, enabling the precise, repeatable focus needed for high-magnification planetary imaging and critical visual observation. This model is engineered specifically for Celestron 9.25" optical tubes—including the CPC and Edge HD series—that use the modern triangular-patterned rear cell.

    Eliminate Image Shift: Precision Focusing for Your Celestron 9.25" SCT

    The primary challenge of focusing a Schmidt-Cassegrain is "image shift" or "mirror flop"—the tendency of the view to jump when changing focus direction. This is caused by the stock focusing mechanism shifting the primary mirror. The Feather Touch Micro Focuser bypasses this issue by providing extremely fine control over the mirror's position, allowing you to achieve perfect focus without losing your target or seeing the image bounce.

    For an imager attempting to capture Jupiter's Great Red Spot or a visual observer splitting a tight double star, this stability is not a luxury; it's a necessity. The Micro Focuser transforms the telescope's focusing from a source of frustration into a precise, reliable tool.

    Dual-Speed Planetary Reduction: From Coarse Motion to Critical Sharpness

    At the heart of the Feather Touch is a robust planetary reduction assembly. This mechanism gives you two focusing speeds in one knob. The larger, black rubber knob provides coarse focus, similar in feel to the original factory knob. The smaller, gold-anodized knob engages the fine-focus reduction, translating multiple turns into minute, controlled adjustments of the primary mirror.

    This dual-speed control allows you to move quickly to the general focal plane and then dial in critical sharpness with the fine-focus knob. The internal components are machined from hardened stainless steel and brass to ensure smooth, repeatable motion with virtually zero backlash, so every turn translates directly into a focus adjustment.

    Bolt-On Upgrade for Celestron CPC & Edge HD 9.25" Telescopes

    This specific Micro Focuser model (FTM-CPC9.25) is a direct, bolt-on replacement for the factory knob on modern Celestron 9.25" telescopes. It is crucial to identify your telescope's rear cell before ordering. This version is designed for tubes that have a distinct triangular pattern cast into the back plate.

    If your telescope has an older, flat back cell, you will need the standard "C" version of the Micro Focuser. Installation is straightforward and can be completed with simple hand tools, instantly elevating the mechanical function of your telescope to match its optical potential.

  • How does the Feather Touch Micro Focuser improve focusing on my Celestron C9.25 Edge HD?

    It replaces the coarse, single-speed stock knob with a dual-speed mechanism. This eliminates the "image shift" or "mirror flop" common with SCTs, where the image jumps when you reverse focus direction. The fine-focus knob allows for tiny, precise adjustments essential for achieving critical sharpness in high-resolution imaging and visual observation.

    Will this Starlight Instruments Micro Focuser fit my older Celestron 9.25" SCT?

    It depends on the rear cell of your telescope. This CPC version is designed for newer models with a triangular pattern on the back plate. If your C9.25 has a completely flat back cell, you will need the standard "C" model (FTM-C9.25) instead.

    Is the Feather Touch Micro Focuser essential for planetary imaging with a Celestron CPC9.25?

    While not strictly "essential," it is considered one of the most significant upgrades for planetary imaging with an SCT. Achieving perfect focus on a target like Jupiter or Saturn is nearly impossible with the stock focuser's image shift. The Feather Touch provides the stability and fine control needed to nail focus between moments of steady seeing, dramatically improving the quality of your final images.

    What does "dual-speed" mean on the Feather Touch Micro Focuser?

    It means you have two focusing controls. The larger, black knob provides a coarse focus for making large adjustments quickly. The smaller, gold knob provides a fine focus, where it takes many turns to move the focuser a small amount. This allows for extremely precise adjustments to achieve perfect sharpness.

    Is the Starlight Instruments Micro Focuser difficult to install?

    No, installation is designed to be straightforward. It involves removing the stock rubber knob and using a hex wrench (typically included) to remove the factory assembly and install the Feather Touch unit. Starlight Instruments provides detailed, model-specific instructions to guide you through the process.

    When trying to split the Double-Double (Epsilon Lyrae) with my C9.25, my stock focuser makes the image jump. Does this solve that?

    Yes, absolutely. That "jump" is the image shift this focuser is designed to eliminate. When attempting to resolve a tight double star like Epsilon Lyrae at high power, the stability and fine control of the Feather Touch Micro Focuser allow you to make the minute adjustments needed to snap the components into sharp, distinct points of light without losing them off-center.

  • Made In USA (designed, machined and assembled)

    • Feather Touch Micro Focuser for Celestron CPC9.25 / C9.25 Edge HD

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  • Starlight Instruments 2-Year Warranty