Baader ERF 180 mm Filter Holder – Modular Plate System

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🎯 A Baader ERF Filter Holder Designed for Solar Observing

This complete holder + plate system is specifically designed for the 180 mm Baader ERF filters, offering a safe, practical, and more affordable alternative to standard solutions on the market. Since ERF filters are valuable and sensitive optics, this holder was designed to protect them while making installation and handling as simple and secure as possible.

🔁 Why Choose This Holder?

Most competing solutions rely on a “universal” plate drilled for multiple diameters, which often compromises stability and ease of use—especially when dealing with an expensive solar filter.

Our approach is different:

• A dedicated enclosed cell to hold and secure the Baader ERF
• An independent plate matched to the diameter of your telescope
• An interchangeable plate system for users with multiple instruments

You never touch the filter directly. Simply remove three screws, swap the plate, and your ERF is ready for another instrument. Simple, fast, and safe.

🧱 Solid PETG Construction

The entire system was designed to offer the ideal combination of rigidity, durability, and low weight:

• Holder designed to support the 180 mm Baader ERF safely
• Plate printed in premium PETG, lightweight and mechanically strong
• Stainless-steel hardware with nylon-tipped knurled screws to protect your telescope

The result is a reliable holder that is comfortable to use and perfectly suited for regular solar observing.

🛡️ Dual Protection Caps – 2025 Update

To ensure maximum protection when the filter is not in use, the holder includes:

• A front protective cap to shield the holder from dust and minor impacts
• An internal protective cap (2025 update) to keep dust away from the ERF surface during storage

Your filter remains protected before, during, and after each observing session.

🌞 A Modular System for Multiple Instruments

If you own several telescopes, there is no need to purchase a full ERF holder system for each one. With this modular design:

• You keep the same main holder with the ERF inside
• You change only the instrument-specific plate
• You minimize handling of the filter itself

Additional plate diameters can be made on request—feel free to contact us.

📦 Included in the Set

• 1 holder for 180 mm Baader ERF
• 1 instrument-specific plate
• 1 front protective cap
• 1 internal dust cap (2025 update)
• Stainless-steel hardware and nylon-tipped knurled screws

Baader ERF filter not included.

🔧 Summary

• Modular design with interchangeable plates
• Dual protection: front cap + internal cap
• Premium PETG construction
• Dedicated enclosed holder to limit direct handling of the filter
• Compatible with the 180 mm Baader ERF
• Custom plate diameters available on request

Each holder is designed and assembled in our workshop and visually inspected before shipping.