Filtr energetický LUNT LS100ERF 100 mm

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. Specifications Material body RG630 Diameter, mm 105 Aperture, mm 100 Thickness, mm 3.5 Side 1 dielectric IR blocking coating Side 2 broadband AR coating Wavefront <1/4 wave T