Lunt ERF 100 mm energy-rejection-filter

LUNT LS100ERF 100mm Energy-Rejection-Filter

High quality diffraction limited IR Cut Energy-Rejection-Filter with 100mm aperture.

For experienced self builders of solar telescopes, Lunt Solar Systems offer unmounted Energy Rejection Filter (ERF) of 40mm up to 100mm aperture as accessory. These ERF are suitable for use together with additional H-alpha Etalon filters.

Technical data:
• Material: RG630
• Diameter: 105mm
• Aperture: 100mm
• Thickness: 3.5mm
• Side 1: Dielectric IR Blocking Coating
• Side 2: Broadband AR coating
• Wavefront: <1/4 wave T

Delivered by order:
• 1 x LUNT 100mm ERF