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  1. SolarMax 40mm H-alpha filter with T-Max and 10mm blocking filter | under 1000mm focal length

    $1,099.00
    This 40mm aperture H-alpha filter can be used with virtually any telescope - but is designed to work best with refractor telescopes having a focal length of under 1000mm . . .
  2. Lunt 50mm tunable H-alpha filter with 6mm blocking filter for scopes under 600mm focal length

    $1,615.00
    This 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 600mm . . .
  3. Lunt 50mm tunable H-alpha filter 2" diagonal 18mm blocking filter for scopes under 1800mm focal length

    $2,376.00
    This 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 . . .
  4. SolarMax 60mm H-alpha filter with T-Max and 15mm blocking filter | under 1500mm focal length

    $1,599.00
    This 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 1500mm and under . . .
  5. Lunt 50mm tunable H-alpha filter 6mm blocking filter 2" Diagonal for scopes under 600mm focal length

    $1,615.00
    This 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 600mm . . .
  6. Lunt 60mm Ha Etalon filter

    $1,917.00
    The Lunt LS60FHa is a 60 mm aperture (no central obstruction) integrally tuned etalon for use on a customer supplied refractor.
  7. SolarMax 40mm H-alpha filter with T-Max and 15mm blocking filter | under 1500mm focal length

    $1,299.00
    This 40mm aperture H-alpha filter can be used with virtually any telescope - but is designed to work best with telescopes having a focal length up to 1500mm. The front filter element (containing the ERF and etalon) requires an optional custom mounting plate to attach to your specific telescope. The filter is provided with a 15mm clear aperture blocking filter mounted in a 1.25" right angle star di . . .
  8. Lunt 50mm tunable H-alpha filter with 12mm blocking filter for scopes under 1200mm focal length

    $1,961.00
    This 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 . . .
  9. Lunt 50mm Ha Etalon Filter

    $1,188.00
    The Lunt LS50FHa is a 50 mm aperture (no central obstruction) integrally tuned etalon for use on any customer-supplied refractor.
  10. SolarMax 60mm H-alpha filter with T-Max & 30mm 2" blocking filter | under 3000mm focal length

    $2,499.00
    This 60mm aperture H-alpha filter can be used with virtually any telescope having a 60mm or greater aperture - but is designed to work best with telescopes having a focal length of under 3000mm . . .
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