Skip to content
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-CEM40
$90.00 - $90.00
$90.00
$90.00 - $90.00
$90.00
Price Match Policy!
  • Adapts select iOptron mounts to iOptron piers
  • Designed for C40, HE43, H4, and G45 mount heads
  • Includes mounting post and azimuth peg
  • All-metal construction for a stable connection
  • Requires modification for use with GEM45 mounts
Backordered
Request Stock Alert
Availability Info
Qualifies for FREE Shipping in CONUS on orders over $350.
  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • iOptron Pier Top Plate

    This iOptron Pier Top Plate is the specific adapter required to mount iOptron C40, HE43, H4, and G45 equatorial mount heads onto a compatible iOptron pier, such as the Tri-Pier 360. It provides the correct hole pattern and includes the necessary center post and azimuth stop peg for a secure, non-slip fit. Please note that this plate requires machining for use with the GEM45 mount.

    Adapting C40, HE43, H4, and G45 Mounts

    For owners of iOptron's C40, HE43, H4, and G45 mounts, this plate is a direct-fit component. It creates a solid, stable connection between your mount head and pier, ensuring your polar alignment remains fixed throughout an imaging session. The design ensures proper clearance and alignment for these specific mount models.

    Modification Required for GEM45 Mounts

    If you intend to use this plate to attach a GEM45 mount to an iOptron pier, modification is necessary. Both the plate and many iOptron piers feature threaded mounting holes. To achieve a secure connection, the threaded holes on this adapter plate must be drilled out to create a smooth bore, allowing mounting bolts to pass through the plate and into the pier.

    This is a critical consideration for GEM45 owners, as the plate is not a drop-in solution for that mount out of the box. The required machining ensures that bolts can be properly tensioned for a safe and rigid installation.

  • What is the purpose of the iOptron Pier Top Plate?

    This plate serves as a mechanical adapter. It is designed to connect specific iOptron equatorial mount heads, such as the C40 and G45, to an iOptron pier, providing a secure and stable platform for astrophotography or visual observation.

    Which iOptron mounts is this Pier Top Plate designed for?

    This Pier Top Plate is listed as a direct fit for the following iOptron mounts:

    • C40
    • HE43
    • H4
    • G45

    It is not a direct fit for the GEM45 mount and requires modification.

    Do I need to modify this Pier Top Plate for my GEM45 mount?

    Yes, absolutely. The mounting holes on this plate are threaded. To use it with a GEM45 mount on a pier that also has threaded holes, you must drill out the threads on the plate to create a smooth pass-through for the mounting bolts. Without this modification, you cannot securely attach the mount.

    How do I adapt the Pier Top Plate for a GEM45 mount and iOptron 360 tri-pier?

    To make this combination work, you will need to perform some machining. The threaded mounting holes on the Pier Top Plate must be drilled out to a smooth bore. This allows bolts to pass through the plate and thread into the top of the 360 tri-pier, clamping the plate firmly between the mount and the pier.

    Can I use the Pier Top Plate with a C40 mount on an iOptron Tri-Pier without modification?

    Yes. The Pier Top Plate is designed as a direct-fit part for the C40 mount. You should be able to attach it to a compatible iOptron pier without the need for any drilling or other modifications.

    What hardware is included with the Pier Top Plate?

    The product is described as coming with a center post and an azimuth peg. These are used to properly align and secure the iOptron mount head to the plate, preventing rotation during polar alignment adjustments.

  • Compatibility Note Requires some machining for use with GEM45 mounts.
  • iOptron 2-Year Limited Warranty