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Lunt - 40mm Energy Rejection Filter


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Availability: In stock

Regular Price: $99.00

Special Price: $90.00

Manufactured by: Lunt Solar Systems



LUNT SOLAR SYSTEMS  Energy Rejection Filter - 40mm

Energy Rejection Filters (ERF's) reduce the heat load on your filter assembly by absorbing or reflecting ultra-violet and/or infra-red light and transmitting light in the desired visual spectrum, passing the light through in the desired visual spectrum. 

High quality diffraction limited IR Cut Energy-Rejection-Filter with 40mm aperture for h-alpha solar filters.

All LUNT ERF filters are unmounted -  filters only.

• Material: RG630 
• Diameter: 43mm
• Aperture: 40mm
• Thickness: 3.5mm
• Side 1: Dielectric IR Blocking Coating
• Side 2: Broadband AR coating
• Wavefront: <1/4 wave T



Additional Information

Name Lunt - 40mm Energy Rejection Filter
Manufacturer Lunt Solar Systems
Model LS40ERF