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Starlight Instruments Orion 0.85 Focal Reducer Adapter w/ M42 Standard T-Thread

Starlight Instruments Orion 0.85 Focal Reducer Adapter w/ M42 Standard T-Thread

by Starlight Instruments
SKU SI-A20-287B
CA$182.00 - CA$182.00
CA$182.00
CA$182.00 - CA$182.00
CA$182.00
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  • Connects Orion 0.85x Reducer to M42 T-Thread Cameras
  • Engineered by Starlight Instruments
  • Ensures a Rigid, Non-Flexing Imaging Train
  • Standard M42 Female T-Threads
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  • Description
  • FAQ
  • Warranty

  • Starlight Instruments Orion 0.85 Focal Reducer Adapter w/ M42 Standard T-Thread

    This Starlight Instruments adapter creates a direct, secure attachment between an Orion 0.85x Focal Reducer and any camera or accessory using standard M42 T-threads. It is machined to replace push-fit or compression-ring holders, forming a solid, all-threaded optical train. This rigid connection is essential for eliminating tilt and flexure during long-exposure astrophotography.

    A Rigid, All-Threaded Connection for Orion Reducers

    For imagers using the Orion 0.85x Focal Reducer, achieving a rigid connection to the camera is critical for preventing optical misalignment. This adapter provides the necessary female M42 T-thread interface, allowing you to securely attach your DSLR, mirrorless, or dedicated astronomy camera. By creating a fully threaded system, you ensure your components remain perfectly square to the sensor throughout an imaging session, resulting in sharper stars across the field.

  • What is the primary purpose of the Starlight Instruments Orion Reducer Adapter?

    Its sole purpose is to connect an Orion 0.85x Focal Reducer directly to a camera or accessory that has male M42 T-threads. This creates a secure, threaded connection that is superior to standard compression rings for astrophotography, as it prevents tilt and flexure in the imaging train.

    Why use this Orion Reducer Adapter instead of a standard 2" nosepiece on my camera?

    A standard nosepiece relies on thumbscrews and a compression ring, which can introduce slight tilt. This adapter threads directly onto the reducer, creating a solid, metal-on-metal connection that holds the camera sensor perfectly perpendicular to the optical axis. For imaging, a threaded connection is always the more stable and reliable option.

    Is this adapter compatible with other focal reducers?

    No, this adapter is specifically machined by Starlight Instruments for the threads and optical spacing requirements of the Orion 0.85x Focal Reducer. It is not a universal adapter and will likely not work with reducers from other brands.

    What kind of camera can I connect with this Orion Reducer Adapter?

    You can connect any imaging device that uses the industry-standard M42 T-thread. This includes most dedicated astronomy cameras (from ZWO, QHY, etc.), as well as DSLR and mirrorless cameras via a camera-specific T-ring.

    Will this adapter work with a ZWO ASI294MC Pro camera and an Orion ED80T CF telescope?

    Yes. If you are using the Orion 0.85x Focal Reducer with your ED80T CF, this adapter will allow you to securely thread your ASI294MC Pro camera to the reducer. This setup creates a robust imaging train ideal for capturing deep-sky objects like the Andromeda Galaxy (M31) or the Orion Nebula (M42).

    Can I use a filter wheel with this Starlight Instruments adapter?

    Yes, provided your total back focus distance remains correct. You would thread this adapter to the Orion reducer, then thread your filter wheel to the adapter's M42 threads, and finally thread your camera to the filter wheel. You must ensure the distance from the reducer to your camera sensor meets the reducer's specific back focus requirement.

  • Starlight Instruments 2-Year Warranty