Passer au contenu
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
Orion Optics UK Adaptor Plate for 225mm Diameter Tubes & Eris 2″ Rack & Pinion Focuser
Orion Optics UK Adaptor Plate for 225mm Diameter Tubes & Eris 2″ Rack & Pinion Focuser
Orion Optics UK Adaptor Plate for 225mm Diameter Tubes & Eris 2″ Rack & Pinion Focuser

Orion Optics UK Adaptor Plate for 225mm Diameter Tubes & Eris 2″ Rack & Pinion Focuser

par Orion Optics UK
UGC OOUK-ERIS-ADAPTOR-PLATE-225MM-DIAMETER
$194.54 - $194.54
$194.54
$194.54 - $194.54
$194.54
Égalisation de prix!
  • Adapts Orion Optics UK Eris 2″ focusers to 225mm diameter tubes
  • Adds only 11mm of height at the central axis
  • Allows for 360° focuser rotation for optimal camera framing
  • Features 8 independent screws for precise tilt adjustment and collimation
  • Secure 4-screw mounting pattern on a 53mm radius
En rupture temporaire
Alerte de retour en stock
Info disponibilité
Admissible à la livraison GRATUITE aux USA pour les commandes de plus de 350$.
  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • Adaptor Plate for 225mm Diameter Tubes & Eris 2″ Rack & Pinion Focuser

    This adaptor plate securely mates an Orion Optics UK Eris 2″ rack and pinion focuser to optical tubes with a 225mm diameter, adding only 11mm of height to the optical train. It features four mounting screws for the focuser on a 53mm radius and eight additional screws for precise tilt adjustment, ensuring perfect optical alignment.

    Secure Mounting for the Eris 2" Focuser on 225mm Tubes

    This plate provides a solid, purpose-built connection between the high-precision Eris 2" focuser and telescope tubes with a 225mm diameter. The four focuser mounting holes, arranged on a 53mm radius, ensure a rigid fit that prevents flexure. By slightly loosening these screws, you can rotate the entire focuser assembly 360° to achieve the most comfortable viewing angle or optimal camera orientation.

    Fine-Tune Collimation with 8 Integrated Tilt-Adjustment Screws

    Achieving a perfectly flat imaging field requires the focuser to be perfectly square to the optical axis. This adaptor plate integrates a ring of eight small adjustment screws that allow you to precisely tilt the focuser, correcting for any misalignment in the optical train. To use the tilt function, simply loosen the main tube fixing screws slightly, make your adjustments, and then re-tighten everything for a perfectly collimated setup.

  • What is the purpose of the Eris 2" Focuser Adaptor Plate for 225mm tubes?

    This plate allows you to physically mount the high-precision Eris 2" rack and pinion focuser onto telescope tubes that have a 225mm outer diameter. It provides a secure, adjustable connection that is critical for both visual observation and astrophotography.

    How do the tilt-adjustment screws on the Eris 225mm plate help with imaging?

    The eight tilt-adjustment screws let you precisely square the focuser drawtube to the telescope's optical axis. This is essential for astrophotography to ensure sharp, round stars across the entire field of view, eliminating elongated stars in the corners of your images that are caused by sensor tilt.

    I've installed the Eris 225mm adaptor plate, but the tilt screws don't seem to work. What's wrong?

    For the tilt adjustment to function correctly, you must first slightly loosen the main screws that fix the plate to the telescope tube itself. This provides the necessary clearance for the small tilt screws to make fine adjustments. Once your collimation is perfect, re-tighten the main fixing screws to lock it in place.

    Can I rotate the focuser after installing it with the 225mm Eris adaptor plate?

    Yes. By slightly slackening the four screws that hold the Eris focuser to the plate, you can rotate the entire focuser body around its central axis. This is extremely useful for positioning your camera or eyepiece at the most comfortable or effective angle for your setup.

    How much height does the Eris 225mm adaptor plate add to the optical train?

    The plate adds 11mm of height at its central axis. You must account for this distance when measuring and calculating your total back focus requirements for flatteners, reducers, or other imaging accessories.

    What is the mounting pattern for the Eris focuser on this 225mm adapter plate?

    The plate features four mounting holes for the focuser, located on a 53mm radius and spaced 90 degrees apart from each other.

  • Compatible Focuser Orion Optics UK Eris 2″ Rack & Pinion
    Compatible Tube Diameter 225mm
    Focuser Mounting 4 x screws
    Mounting Hole Pattern 53mm radius, 4 holes @ 90 degrees
    Tilt Adjustment 8 x screws
    Profile Height 11mm (at center axis)

    • Adaptor Plate for Eris 2" Focuser to 225mm Tube

      × 1

  • Orion Optics UK 1-Year Warranty