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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.
PrimaLuceLab 90mm PLUS Support Rings

PrimaLuceLab 90mm PLUS Support Rings

by PrimaLuceLab
SKU PLL-PLLANSU90P
$205.00 - $205.00
$205.00
$205.00 - $205.00
$205.00
Price Match Policy!
  • Fits 90mm Diameter Optical Tubes
  • Part of the Modular PLUS System
  • CNC-Machined Aluminum Construction
  • Weight: 0.5 kg
  • Multiple Threaded Holes and Slots for Accessories
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • PrimaLuceLab 90mm PLUS Support Rings

    The PrimaLuceLab 90mm PLUS Support Rings provide a rigid mounting solution for optical tubes with a 90mm diameter, engineered from a solid block of CNC-machined aluminum. The complete set weighs just 0.5 kg, adding minimal weight while maximizing the mechanical stability of your entire telescope system.

    90mm PLUS Rings: A Secure Foundation for Your Telescope

    Designed specifically for telescopes with an optical tube diameter of approximately 90mm, these rings serve as the core component for building a stable and versatile imaging rig. By providing a secure grip on the optical tube, they eliminate flexure that can ruin long exposures and allow for the precise attachment of other system components.

    The PLUS System: Universal Connectivity for 90mm Scopes

    As part of the Prima Luce Universal System (PLUS), these 90mm rings are more than just a tube holder; they are a central hub for accessories. The design incorporates a pattern of threaded holes, plain holes, and slots that allow for the direct attachment of PLUS dovetail plates, guide rings, and clamps to both the top and bottom of the rings. This modularity lets you easily mount guide scopes, control computers, or even a second telescope in parallel with maximum rigidity.

    CNC-Machined Aluminum at Just 0.5 kg

    Each component is machined with high precision from a single block of aluminum, ensuring perfect fit and alignment. The aluminum is then sandblasted for a smooth finish and hard-anodized to increase durability and resistance to oxidation. This robust construction provides a rock-solid connection that weighs only 0.5 kg, preserving the balance of your mount.

  • What telescopes are compatible with the PrimaLuceLab 90mm PLUS Support Rings?

    These rings are designed for any telescope with an optical tube diameter of approximately 90mm. This includes many popular refractors, such as the Sky-Watcher Evostar 80ED, or telescopes with a 90mm dew shield diameter like the William Optics RedCat 71.

    How do the 90mm PLUS Support Rings improve my astrophotography setup?

    They provide a rigid, secure connection to the PrimaLuceLab PLUS system, allowing you to easily mount accessories. You can add guide scopes, control units like the ZWO ASIAIR, and dovetail plates on both the top and bottom of your telescope. This modularity creates a more stable and versatile imaging rig with clean cable management.

    Can I mount a guide scope using the 90mm PLUS Support Rings?

    Yes. The rings feature threaded holes and slots compatible with PLUS guide rings and dovetail clamps (sold separately). This allows you to attach a separate guide scope securely and keep it precisely aligned with your main telescope.

    Are the PrimaLuceLab 90mm PLUS Rings compatible with non-PLUS dovetail plates?

    Yes. While designed for the PLUS ecosystem, the rings include a series of central slots that allow you to attach plates and accessories from other brands using standard screws, ensuring broad compatibility with your existing equipment.

    I have a Sky-Watcher Evostar 80ED (90mm tube). Can I use these rings to mount it on my Losmandy-style mount?

    Absolutely. You would attach the 90mm PLUS rings to your Evostar 80ED, and then bolt a Losmandy-style PLUS dovetail plate (sold separately) to the bottom of the rings. This provides a secure, rigid connection to your mount's saddle plate.

    How would I use the 90mm PLUS Rings to add a ZWO ASIAIR to my William Optics RedCat 71?

    The RedCat 71's dew shield is 90mm in diameter, making these rings a perfect fit. You can attach a small PLUS Vixen-style plate to the top of the rings, which provides an ideal platform for mounting the ASIAIR directly above the optical tube for a compact setup and clean cable routing.

  • Internal Diameter 90 mm
    Weight 0.5 kg
    Material CNC-machined Aluminum
    Finish Sandblasted and Hard-Anodized
    System Compatibility PrimaLuceLab PLUS System

    • 90mm PLUS Support Rings

      × 2

  • PrimaLuceLab 1-Year Warranty