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Lunt 50mm tunable H-alpha filter 2" diagonal 12mm blocking filter for scopes under 1200mm focal length
$1,961.00This 50mm clear aperture Lunt H-alpha filter can be used to provide striking views of solar prominences and disk detail with virtually any telescope having a focal length under 1200mm . . . -
SolarMax 60mm H-alpha filter with T-Max and 10mm blocking filter | under 1000mm focal length
$1,399.00This 60mm aperture H-alpha filter can be used with virtually any refractor telescope having a 60mm or greater aperture - but is designed to work best with telescopes having a focal length of 1000mm and under . . . -
Lunt 50mm tunable H-alpha filter with 18mm blocking filter for scopes under 1800mm focal length
$2,376.00This 50mm clear aperture Lunt H-alpha filter can be used to provide striking views of solar prominences and disk detail with virtually any telescope having a focal length under 1800mm . . . -
Lunt 50mm Hydrogen Alpha Filter with B3400 for 2" Focusers
$3,348.00The Lunt LS50FHa is a 50 mm aperture (no central obstruction) integrally tuned etalon for use on any customer-supplied refractor.