Baader ERF 135 mm Filter Holder – Modular Plate System

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🎯 A Dedicated Baader ERF 135 mm Filter Holder for Solar Observing

This complete holder + plate system has been specifically designed for 135 mm Baader ERF solar filters. It provides a safe, modular, and reliable solution for solar observing while minimizing direct handling of a valuable and sensitive optical component.

🔁 Designed with Filter Safety in Mind

Unlike universal multi-drilled plates often found on the market, this holder is based on a simple and secure design:

• A dedicated enclosed cell that holds the ERF securely
• An independent plate matched to the diameter of your telescope
• The ability to swap only the plate when using multiple instruments

The filter remains permanently inside its holder. By removing just three screws, you can replace the plate without ever touching the ERF itself — fast, safe, and stress-free.

🧱 Reliable Construction in Premium PETG

The system is designed to strike an excellent balance between rigidity, durability, and low weight:

• Holder specifically designed for the Baader ERF 135 mm
• Plate printed in premium PETG, lightweight yet mechanically strong
• Stainless steel hardware with nylon-tipped knurled screws to protect your telescope

The result is a robust, user-friendly holder perfectly suited for regular solar observing.

🛡️ Dual Protective Caps – 2025 Update

To protect your ERF filter outside observing sessions, this holder includes:

• A front protective cap to shield against dust and minor impacts
• An internal protective cap (2025 update) to further reduce dust exposure when stored

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

🌞 A Modular Solution for Multiple Telescopes

If you own multiple telescopes, this Baader ERF 135 mm holder allows you to:

• Keep the same main holder with the ERF inside
• Change only the instrument-specific plate
• Minimize direct handling of the filter

Additional plate diameters can be made on request — feel free to contact us if your setup is not listed.

📦 What’s Included

• 1 holder for Baader ERF 135 mm
• 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 filter handling
• Compatible with Baader ERF 135 mm
• Custom plate diameters available on request

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