iOptron Pier Top Plate For CEM40/HAE43/HEM44/GEM45

Mounting your iOptron equatorial or harmonic mount on a permanent pier? The iOptron Pier Top Plate #8032PT-CEM40 is the critical link between your mount and your fixed installation. Whether you're setting up in a roll-off roof observatory or installing a steel pier in your backyard, this precision-machined plate ensures a rock-solid, vibration-resistant interface between your mount and the pier column.

This specific top plate is designed to fit CEM40, GEM45, HAE43, and HEM44 mounts. It features pre-drilled mounting holes that align precisely with each mount’s base, as well as a center hole for through-bolt or cable passthrough options. Made from anodized aluminum, the plate offers corrosion resistance, strength, and long-term durability in the field.

Key Features:

• Custom Fit for Four Mounts: Pre-drilled to accept the base patterns of iOptron’s CEM40, GEM45, HAE43, and HEM44 mounts—no guesswork or custom drilling required.

• Observatory-Ready: Designed for mounting atop a steel or concrete pier in a permanent or semi-permanent setup. Ensures rigid alignment and long-term reliability.

• Machined Aluminum Construction: Lightweight but strong, with a durable anodized finish to resist weathering and corrosion over time.

• Central Access Hole: Provides clearance for mounting bolts or cable routing depending on your pier design and mount configuration.

• Clean and Professional Finish: Matches the look and fit of your iOptron mount, creating a stable, low-profile mounting surface with no flex or tilt.

Technical Specs:

• Material: CNC-machined anodized aluminum

• Mount Compatibility: iOptron CEM40, GEM45, HAE43, and HEM44

• Pre-Drilled Bolt Pattern: Matches each compatible mount’s base

• Center Hole: For mounting bolt or cable passthrough

• Part Number: 8032PT-CEM40

Compatibility Tip:

This top plate is designed to be used with iOptron’s permanent piers or custom steel piers built to accept iOptron plates. It is not intended for use with tripods or Tri-Piers. Be sure your pier has a compatible bolt circle or flat surface to accommodate this plate.

6" (150mm) iOptron Pier Top flange plate for building your own pier or modifying your existing tripod/pier.

Features
The Pier Top can be used to mount the following mounts 

• CEM40* CEM40/HAE43/HEM44/GEM45 (w/ center post & alignment peg)

* Due to the small mount base of the mount, the low latitude operation may be affected.