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  1. Astrodon Narrowband 50mm Unmounted H-a 3 nm Square Filter

    Astrodon - Narrowband - 50mm Unmounted H-Alpha 3 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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    FREE SHIPPING
    (48 States)
    Model#: HA3-50S
    $1,250.00

  2. Coronado - SolarMax II 40mm Filter with RichView™ Tuning with 15mm Blocking Filter

    Coronado - SolarMax II 40mm Filter with RichView™ Tuning with 15mm Blocking Filter

    Coronado by Meade SolarMax II Solar Filter set with RichView tuning system. Includes 40mm diameter primary H-Alpha etalon filter with sub 0.7 angstrom bandwidth and Blocking Filter ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: SMF40-15
    $1,299.00

  3. Coronado - SolarMax 40 Ha Filter with BF10 and TMax Tuner

    Coronado - SolarMax 40 Ha Filter with BF10 and TMax Tuner

    40mm aperture narrowband Ha filter with TMax tuner and 10 mm blocking filter ... Learn More
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    (48 States)
    Model#: SM40-10
    $1,450.00

  4. Astrodon Tru-Balance E-Series 50mm Square LRGB Filter

    Astrodon - 50mm Unmounted Gen2 E-Series LRGB Square Filters (set of 4)

    Astrodon Tru-Balance RGB filters have revolutionized CCD imaging. Their popularity is due to ease-of-use, high optical throughput and great resulting color for galaxies, star clusters and nebulae.  There are two varieties of Tru-Balance filters - E-Series and I-Series.

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    FREE SHIPPING
    (48 States)
    Model#: LRGB2-E50S
    $1,225.00

  5. Baader Planetarium - D-ERF Energy Rejection Filter 160mm with IR-Cut Dielectric Coating

    Baader Planetarium - D-ERF Energy Rejection Filter 160mm with IR-Cut Dielectric Coating

    Baader Planetarium D-ERF Energy Rejection Filter, 160mm 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-160
    $1,254.00

  6. Lunt 50mm Ha Etalon-Filter-System with B600 Blocking Filter for 2"

    Lunt - 50mm Ha Etalon-Filter-System with B600 Blocking Filter for 2" Focuser

    The new Lunt Solar Systems LS50 Hydrogen-Alpha Filter incorporates a unique design feature which decreases chances of decontaction (breakage) and increases solar filter thermal stability

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    Model#: LS50FHa2/B600
    $1,346.00

  7. Astrodon - Narrowband - 50mm Unmounted OIII 3 nm Square Filter

    Astrodon - Narrowband - 50mm Unmounted OIII 3 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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    FREE SHIPPING
    (48 States)
    Model#: OIII3-50S
    $1,250.00

  8. Chroma filters

    Chroma Technology - 50mm LRGB and Ha/8-50 Set - Unmounted

    Extremely durable coatings withstand humidity changes, extreme temperature fluxes and remain spectrally accurate in CWL and band pass adherence.

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    FREE SHIPPING
    (48 States)
    Model#: HaLRGB-50
    $1,305.00

  9. CFW-4-5

    FLI - 5 position Color Filter Wheel for ProLine (50mm square filters)

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    FREE SHIPPING
    (48 States)
    Model#: CFW-4-5
    $1,495.00

  10. Astrodon - Narrowband - 50mm Unmounted SII 3 nm Square Filter

    Astrodon - Narrowband - 50mm Unmounted SII 3 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),

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: SII3-50S
    $1,250.00

  11. Optec - IFW 3" Intelligent 3" Filter Selector System.

    Optec - IFW 3" Intelligent 3" Filter Selector System.

    To meet the needs of the ever increasing CCD size used in astro-imaging, ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: 17360
    $1,295.00

  12. Coronado - SolarMax II 60mm Filter with RichView™ Tuning with 10mm Blocking Filter

    Coronado - SolarMax II 60mm Filter with RichView™ Tuning with 10mm Blocking Filter

    Coronado - SMF60-BF10

    Coronado by Meade SolarMax II Solar Filter set with RichView tuning system. Includes 60mm diameter primary H-Alpha etalon filter with sub 0.7 angstrom bandwidth and 10mm Blocking Filter. 

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    FREE SHIPPING
    (48 States)
    Model#: SMF60-10
    $1,399.00

  13. Astrodon Narrowband 50mm Unmounted NII 3 nm Square Filter

    Astrodon - Narrowband - 50mm Unmounted NII 3 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),

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: NII3-50S
    $1,250.00

  14. Lunt - 50mm Ha Etalon-Filter-System with B600 Blocking Filter for 1.25" Focuser

    Lunt - 50mm Ha Etalon-Filter-System with B600 Blocking Filter for 1.25" Focuser

    The new Lunt Solar Systems LS50 Hydrogen-Alpha Filter incorporates a unique design feature which decreases chances of decontaction (breakage) and increases solar filter thermal stability

    ...
    Learn More
    Model#: LS50FHa1/B600
    $1,346.00

  15. Lunt 60mm H-Alpha Etalon for Double-Stacking on the LS-60

    Lunt - 60mm H-Alpha Etalon for Double-Stacking on the LS-60

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

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    Model#: LS60FHA
    $1,498.00

15 Item(s)

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