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  1. Lunt 60mm Ha Etalon Filter with B1200 for 2" Focuser

    Lunt - 60mm Ha Etalon Filter with B1200 for 2" Focuser

    Use the double-stack technique to reduce bandpass and get the best

    ...
    Learn More
    Model#: LS60FHa2/B1200
    $2,146.00

  2. Baader Planetarium - D-ERF Energy rejection filter 180mm with IR-Cut dielectric coating

    Baader Planetarium - D-ERF Energy rejection filter 180mm with IR-Cut dielectric coating

    Baader Planetarium D-ERF Energy Rejection Filter, 180mm with IR-Cut Dielectric CoatingBaader planetarium has introduced a new evolution in their premium energy rejection filters, from 70mm up to 180mm! These filters incorporate a new all-dielectric IR re ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: DERF-180
    $2,177.00

  3. Lunt 60mm Ha Etalon Filter with B1200 for 1.25" Focuser

    Lunt - 60mm Ha Etalon Filter with B1200 for 1.25" Focuser

    Use the double-stack technique to reduce bandpass and get the best

    ...
    Learn More
    Model#: LS60FHa1/B1200
    $2,146.00

  4. Coronado - 60mm Ha Narrowband Element Front Unit & TMax Tuner for Double Stacking

    DISCONTINUED: Coronado - 60mm Ha Narrowband Element Front Unit & TMax Tuner for Double Stacking

    H-Alpha 60mm narrowband unit for use in doublestacking. Cannot be used without secondary interference filter. Comes with T-Max tuner. Needs a SM60 Doublestack Adapter Plate (sold separately) in order to attach to a SolarMax 60 ... Learn More
    Model#: SM60

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