High quality diffraction limited IR Cut Energy-Rejection-Filters for h-alpha solar filters.

Unmounted filters only. Adapter plates we machine on request to customers need, please ask for a quote.

Specifications:
• Material: RG630
• Diameter: 135mm
• Aperture: 130mm
• Thickness: 4mm
• Side 1: Dielectric IR Blocking Coating
• Side 2: Broadband AR coating
• Wavefront: <1/4 wave T