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  1. Astrodon - Narrowband - 65mm Unmounted H-Alpha 5 nm Square Filter

    Astrodon - Narrowband - 65mm Unmounted H-Alpha 5 nm Square Filter

    Narrowband (NB) filters  enhance contrast of emission objects by accepting only a narrow range of wavelengths around the emission lines of hydrogen (H-a, 656 nm), oxygen (OIII),

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    (48 States)
    Model#: HA5-65S
    $1,050.00

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