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  1. Astrodon - Narrowband - 36mm Unmounted SII 5 nm Filter

    Astrodon - Narrowband - 36mm Unmounted SII 5 nm 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, 501 nm), sulfur (SII, 672nm) and others.

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    (48 States)
    Model#: SII5-36R
    $435.00

  2. Astrodon - 50mm" Gen 2 Parfocal UV Blocked Clear Square Filter

    Astrodon - 50mm" Gen 2 Parfocal UV Blocked Clear Square Filter

    Astrodon's new improvements of photometric Sloan filters generation 2 feature excellent out of band clocking and other edge-blackended compounds to reduce stray light reflections to assist in CCD imaging.

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    (48 States)
    Model#: C2_50S_Gen2
    $295.00

  3. 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),

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    (48 States)
    Model#: SII3-50S
    $1,250.00

  4. Astrodon 50mm Unmounted ExoPlanet-BB Filter

    Astrodon - 50mm Unmounted ExoPlanet-BB Filter

    Astrodon introduces the ExoPlanet-BB filter for use in amateur-scale telescopes to measure light curves of exoplanets.

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    (48 States)
    Model#: XOPBB-50R
    $285.00

  5. Astrodon - Tru-Balance E-Series Filters

    Astrodon - Tru-Balance E-Series Filters

    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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    Model#: E Series Tru Balance

    Starting at: $450.00

  6. Astrodon - Narrowband - 50mm Unmounted OIII 5 nm Filter

    Astrodon - Narrowband - 50mm Unmounted OIII 5 nm 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, 501 nm), sulfur (SII, 672nm) and others.

    ...
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    FREE SHIPPING
    (48 States)
    Model#: OIII5-50R
    $725.00

  7. Astrodon Photometric Sloan 1.25" Mounted Gen2 u' Edge-Blackened Filter

    Astrodon - Photometric Sloan - 1.25" Mounted Gen2 u' Edge-Blackened Filter

    NEW!  Astrodon introduces Generation 2 Sloan filters based upon ongoing input from research organizations.  The changes include

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    Model#: u'2-27R
    $200.00

  8. Astrodon - NIR Tricolor - 50mm NIRL Luminance Square Filter

    Astrodon - NIR Tricolor - 50mm NIRL Luminance Square Filter

    The NIR region remains largely unexplored by amateur imagers. Perhaps this is due to the impression that the Si CCD camera is not sufficiently sensitive in the NIR.

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    (48 States)
    Model#: NIRL-50S
    $525.00

  9. Astrodon - Tru-Balance I-Series - 1.25" Mounted CRGB Filter

    Astrodon - Tru-Balance I-Series - 1.25" Mounted CRGB Filter

    TRU-BALANCE FILTERSSIMPLIFY YOUR IMAGINGGreat Filters Just Got Better - Generation 2 Now Shipping!        Astrodon Tru-Balance RGB filters have revolutionized CCD imaging ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: CRGB2-I27R
    $450.00

  10. Astrodon Narrowband 50mm Unmounted  Red Continuum 5 nm Filter

    Astrodon - Narrowband - 50mm Unmounted Red Continuum 5 nm 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, 501 nm), sulfur (SII, 672nm) and others.

    ...
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    FREE SHIPPING
    (48 States)
    Model#: REDCON5-50R
    $725.00

  11. Astrodon Narrowband 50mm Unmounted OIII 5 nm Square Filter

    Astrodon - Narrowband - 50mm Unmounted OIII 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, 501 nm), sulfur (SII, 672nm) and others.

    ...
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    FREE SHIPPING
    (48 States)
    Model#: OIII5-50S
    $875.00

  12. Astrodon Photometric Sloan 1.25" Mounted Gen2 g' Edge Blackened Filter

    Astrodon - Photometric Sloan - 1.25" Mounted Gen2 r' Edge Blackened Filter

    NEW!  Astrodon introduces Generation 2 Sloan filters based upon ongoing input from research organizations.  The changes include

    ...
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    Model#: r'2-27R
    $200.00

  13. Astrodon - 1.25" Mounted CLEAR Filter

    Astrodon - 1.25" Mounted CLEAR Filter

    TRU-BALANCE FILTERSSIMPLIFY YOUR IMAGINGGreat Filters Just Got Better - Generation 2 Now Shipping! Clear optical windows. Pass all frequency of light to the detector.IF your optical system is well color corrected ... Learn More
    Model#: C2-27
    $140.00

  14. Astrodon - Narrowband - 1.25" Mounted Red Continuum 5 nm Filter

    Astrodon - Narrowband - 1.25" Mounted Red Continuum 5 nm 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, 501 nm), sulfur (SII, 672nm) and others.

    ...
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    FREE SHIPPING
    (48 States)
    Model#: REDCON5-27R
    $330.00

  15. Astrodon Photometric Sloan 50mm Unmounted Gen2 i' Edge Blackened Square Filter

    Astrodon - Photometric Sloan - 50mm Unmounted Gen2 i' Edge Blackened Square Filter

    NEW!  Astrodon introduces Generation 2 Sloan filters based upon ongoing input from research organizations.  The changes include

    ...
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    FREE SHIPPING
    (48 States)
    Model#: i'2-50S
    $440.00

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

    Astrodon - 50mm Unmounted Gen2 E-Series LRGB 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.

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: LRGB2-E50R
    $950.00

  17. Astrodon - NIR Tricolor - 50mm dia. NIRL123 Tri-color Imaging (Set of 4)

    Astrodon - NIR Tricolor - 50mm dia. NIRL123 Tri-color Imaging (Set of 4)

    NIR Tricolor Filters        The NIR region remains largely unexplored by amateur imagers. Perhaps this is due to the impression that the Si CCD camera is not sufficiently sensitive in the NIR ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: NIRL123-50R
    $1,150.00

  18. Astrodon - Photometric Sloan - 50mm Unmounted Gen2 z_s Edge Blackened Filter

    Astrodon - Photometric Sloan - 50mm Unmounted Gen2 z_s Edge Blackened Filter

    NEW!  Astrodon introduces Generation 2 Sloan filters based upon ongoing input from research organizations.  The changes include

    ...
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    FREE SHIPPING
    (48 States)
    Model#: z_s2-50R
    $400.00

  19. Astrodon - Tru-Balance E-Series - 50mm Square Generation 2 GREEN Filter

    Astrodon - Tru-Balance E-Series - 50mm Square Generation 2 GREEN Filter

    TRU-BALANCE FILTERSSIMPLIFY YOUR IMAGINGGreat Filters Just Got Better - Generation 2 Now Shipping!        Astrodon Tru-Balance RGB filters have revolutionized CCD imaging ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: G2-E50S
    $300.00

  20. Astrodon - Narrowband - 36mm Unmounted  H-Alpha 5 nm Filter

    Astrodon - Narrowband - 36mm Unmounted H-Alpha 5 nm 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, 501 nm), sulfur (SII, 672nm) and others.

    ...
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    FREE SHIPPING
    (48 States)
    Model#: HA5-36R
    $435.00

Items 41 to 60 of 99 total

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