iOptron 8" MiniPier for Various iOptron Mounts

iOptron 8040-8 MiniPier – 8-Inch Extension Pier for CEM26, GEM28, HEM27, and HAE29 Mounts

iOptron Part Number: 8040-8

Sometimes your telescope just needs a little more breathing room—especially if you’re imaging near the zenith or using a longer optical tube. That’s where the iOptron 8040-8 MiniPier comes in. This lightweight extension pier adds a full 8 inches of clearance between your mount and tripod, helping you avoid collisions, increase flexibility, and improve your overall observing ergonomics.

Designed specifically for iOptron's popular mid-weight mounts, including the CEM26, GEM28, HEM27, and HAE29, this MiniPier is the ideal solution when you're running longer scopes or dealing with tripod leg interference.

Compact Design, Flexible Height

The 8040-8 MiniPier is based on iOptron’s standard 5.5-inch aluminum pier (MiniPier #8040) but includes a three-piece spacer system that allows you to extend the total height to a full 8 inches. This modular design makes it easy to customize the clearance based on your specific setup, and the included bolts and spacers ensure a secure, vibration-free connection.

Base diameter: 4" (100mm)
Height: 8" (with spacer set installed)
Weight: 2 lbs (approx.)

Whether you’re imaging with a refractor that needs extra zenith clearance or using a fork-mounted SCT that tends to swing low, the 8040-8 gives you room to move without sacrificing stability.

Mount Compatibility

The 8040-8 MiniPier is compatible with a variety of iOptron mounts using the standard 100mm mounting base and pattern. Supported mounts include:

• CEM26

• GEM28

• HEM27

• HAE29

This MiniPier installs easily between your mount and tripod or pier, making it a simple, bolt-on upgrade for increased versatility.

Construction and Finish

Constructed from die-cast and CNC-machined aluminum, the MiniPier is built for strength and stability with minimal weight. It’s powder-coated in a durable finish to resist wear, corrosion, and handling abuse in the field.

Despite its light 2-pound frame, the pier is more than sturdy enough to support the full rated payload of any compatible mount—making it perfect for portable setups where every ounce counts.

What’s Included

• 5.5" MiniPier (base component)

• Extension spacer system for total 8" height

• Mounting bolts and hardware

• Installation instructions

No additional adapters are needed for supported mounts. Just drop it in place, secure it with the included bolts, and enjoy the extra room.

Observing Tip

The 8040-8 MiniPier is especially helpful when using optical tubes longer than 600mm in focal length, or if you frequently observe targets near the celestial pole. That extra height can prevent the back of the scope—or attached accessories—from colliding with the tripod legs, which protects your gear and gives you peace of mind during GoTo slews.

Why Choose the 8040-8 MiniPier?

It’s small, simple, and solves a real-world problem. The iOptron 8040-8 MiniPier gives you added vertical clearance in a lightweight, bolt-on package that travels easily and adds flexibility to nearly any observing setup. It’s one of those accessories you’ll wonder how you managed without.