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Lunt ERF 100 mm energy-rejection-filter. Diameter 105 mm, aperture 100 mm, thickness 3.5 mm.
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.
• 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
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