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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.
iOptron Pier Top Plate

iOptron Pier Top Plate

by iOptron
SKU IOP-8032PT-01
$75.00 - $90.00
$90.00
$75.00 - $90.00
$90.00
Price Match Policy!
  • Model-Specific Fit: Ensures a precise, secure connection for various iOptron mounts.
  • Solid Machined Construction: Provides a rigid, flex-free base critical for astrophotography.
  • Direct Pier Integration: Designed to interface directly with iOptron piers for a seamless setup.
  • Multiple Versions Available: Select the correct plate for your CEM40/GEM45, CEM60/CEM70, iEQ30/iEQ45, or AZ Mount Pro.
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • iOptron Pier Top Plate

    The iOptron Pier Top Plate creates the essential, non-flexing link between your iOptron mount head and pier. Machined for a precise fit, this plate is available in dedicated versions for iOptron's most popular mounts, including the CEM40, GEM45, CEM60, CEM70, iEQ30, iEQ45, and AZ Mount Pro series. It provides the stable foundation required for reliable tracking and sharp, long-exposure astrophotography by eliminating a common source of system flexure.

    A Solid, Model-Specific Foundation for iOptron Mounts

    A stable mount begins with a solid connection to its pier. The iOptron Pier Top Plate is engineered to provide that stability. By choosing the plate that matches your specific mount—whether it's a CEM70, iEQ45 Pro, or AZ Mount Pro—you ensure a perfect mechanical interface that won't shift or vibrate under load. This rigid connection is critical for maintaining accurate polar alignment and achieving precise GoTo slews and tracking, especially with heavy optical tubes.

    Required Modifications for Select Mounts Like the GEM45

    This adapter plate is designed for a secure fit, but please be aware that certain mount and pier combinations may require user modification. For example, when attaching a GEM45 mount to a Tri-Pier, the pre-threaded holes on the plate may need to be drilled out to accept the pier's mounting bolts. This is a known requirement for some configurations and ensures the bolts can pass through the plate and securely thread into the pier itself, creating the most rigid connection possible.

  • Which iOptron Pier Top Plate do I need for my mount?

    You must select the version of the iOptron Pier Top Plate that specifically matches your mount model. Options are available for most modern iOptron mounts, including the AZ Mount Pro/MiniTower, CEM40/GEM45, CEM60/CEM70, iEQ30/iEQ30 Pro, and iEQ45/iEQ45 Pro. Using the correct plate is essential for a secure fit.

    Will I need to modify the Pier Top Plate for my GEM45 mount?

    Yes, this is possible and sometimes required. The source data confirms that for some mount/pier combinations, such as a GEM45 on a Tri-Pier, user modification is necessary. This typically involves drilling out the plate's threaded mounting holes so that bolts can pass through and thread directly into the pier, which may also have threaded holes.

    What is the purpose of the iOptron Pier Top Plate?

    Its primary purpose is to provide a strong, stable, and model-specific mechanical interface between an iOptron mount head and an iOptron pier. This eliminates flexure and ensures the entire telescope system behaves as a single rigid unit, which is critical for the demands of astrophotography.

    Can I use this iOptron plate to attach my CEM60 to a third-party pier?

    This is not recommended without significant planning. The iOptron Pier Top Plate is designed specifically for the bolt patterns of iOptron piers. While it might be possible to adapt it to another pier, it would likely require custom machining and drilling of either the plate or the third-party pier, and a secure fit is not guaranteed.

    Why is a dedicated top plate better than a universal adapter for my CEM70?

    A dedicated plate like the iOptron Pier Top Plate for the CEM70 offers a perfect fit with no slop or play. Universal adapters often have slots or oversized holes that can be a source of flexure or allow for slight shifting of the mount over time, compromising polar alignment and tracking accuracy. A model-specific plate provides maximum rigidity.

    I am trying to mount my iEQ30 Pro to a Tri-Pier, is this the correct part?

    Yes, you will need the iOptron Pier Top Plate, specifically the version designated for the iEQ30/iEQ30 Pro. This will ensure the mount head attaches correctly and securely to the pier.

  • Compatible Mounts AZ Mount Pro/MiniTower, CEM40/GEM45, CEM60/CEM70, iEQ30/iEQ30 Pro, iEQ45/iEQ45 Pro
    Installation Note Requires some machining for certain mount/pier combinations (e.g., GEM45)

    • iOptron Pier Top Plate

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  • iOptron 2-Year Limited Warranty