Steplessly Variable White Anodized Diaphragm for D-ERF Filters

Optimize your solar observations with the steplessly adjustable diaphragm, specially designed for Baader Planetarium D-ERF filters. This white anodized, heat-reflecting diaphragm can be adjusted from 13mm to 113mm, allowing for precise control over telescope aperture while observing with H-alpha filters from Solar Spectrum and other brands.

Key Features

• Stepless Adjustment: Easily adjust the aperture from 13mm to 113mm for optimal solar viewing control.
• High-Quality Construction: White anodized finish reflects heat, keeping the telescope cool during extended observations.
• Compatible with DIY Mounts: Equipped with four M3 threads on a 60mm pitch circle radius for easy attachment to custom DIY holders.
• Versatile Applications: Perfect for adjusting a refractor’s objective, allowing selective dimming to reduce edge residual errors in affordable lenses.

Additional Information

This diaphragm is designed to pair with Baader’s D-ERF filters, specifically for use with Solar Spectrum H-alpha filters, and may be adapted for custom holders. Please note, if modifications are required for a custom D-ERF filter holder, additional charges of EUR 50 may apply.

Specifications

• Diaphragm Range: 13mm to 113mm
• Finish: White anodized, heat-reflecting
• Compatibility: D-ERF Filters and DIY mounts with M3 threads

Enhance your solar observation experience with this precision diaphragm, designed for professional solar viewing setups.