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ZWO Seestar S30 Desktop

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  • Original price $484.00 USD - Original price $484.00 USD
    Original price
    $484.00 USD
    $484.00 USD - $484.00 USD
    Current price $484.00 USD

    Astrodon H-alpha Filter - 5nm

    DON-HA5_31R
    Only 1 left!

    H-α (hydrogen-alpha) at 656 nm (nanometers) is deep red in color and the most popular narrowband filter. Hydrogen is ubiquitous in the cosmos and i...

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    Original price $484.00 USD - Original price $484.00 USD
    Original price
    $484.00 USD
    $484.00 USD - $484.00 USD
    Current price $484.00 USD
  • Original price $484.00 USD
    Original price $484.00 USD - Original price $484.00 USD
    Original price $484.00 USD
    Current price $425.00 USD
    $425.00 USD - $425.00 USD
    Current price $425.00 USD

    Astrodon SII Filter - 5nm

    DON-SII5_31R
    Only 1 left!

    If you want the look of Hubble Space Telescope (HST) images, such as the famous “Pillars of Creation” (the Eagle Nebula, Messier 16), then the next...

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    Original price $484.00 USD
    Original price $484.00 USD - Original price $484.00 USD
    Original price $484.00 USD
    Current price $425.00 USD
    $425.00 USD - $425.00 USD
    Current price $425.00 USD
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  • Original price $282.83 USD
    Original price $282.83 USD - Original price $282.83 USD
    Original price $282.83 USD
    Current price $238.37 USD
    $238.37 USD - $238.37 USD
    Current price $238.37 USD

    Baader 4nm 1.25" Ultra-Narrowband OIII Filter - CMOS-Optimized (USED)

    BAA-2961400-125-USED
    Only 1 left!

    In perfect condition, used Baader H-alpha / O-III / S-II Ultra-Narrowband (Narrowband) filter set - Premium Grade 3.5 / 4 nm half width (to harmo...

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    Original price $282.83 USD
    Original price $282.83 USD - Original price $282.83 USD
    Original price $282.83 USD
    Current price $238.37 USD
    $238.37 USD - $238.37 USD
    Current price $238.37 USD
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  • Original price $193.17 USD
    Original price $193.17 USD - Original price $193.17 USD
    Original price $193.17 USD
    Current price $180.78 USD
    $180.78 USD - $180.78 USD
    Current price $180.78 USD

    Baader 6.5nm 36mm H-alpha Filter - CMOS-Optimized (OPEN BOX)

    BAA-2961100-36-OPENBOX
    Only 1 left!

    In perfect condition, open box Baader H-alpha / O-III / S-II Narrowband Filter Set - Precision Grade 6.5 nm FWHM, recommended for optical systems...

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    Original price $193.17 USD
    Original price $193.17 USD - Original price $193.17 USD
    Original price $193.17 USD
    Current price $180.78 USD
    $180.78 USD - $180.78 USD
    Current price $180.78 USD
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  • Original price $306.16 USD
    Original price $306.16 USD - Original price $306.16 USD
    Original price $306.16 USD
    Current price $209.94 USD
    $209.94 USD - $209.94 USD
    Current price $209.94 USD

    Baader CCD LRGB 31mm Unmounted Filter Set (OPEN BOX)

    BAA-2459474-OPENBOX
    Only 1 left!

    In perfect condition, open box Filter size 31 mm - round, unmounted - filter thickness 2 mm Set of L-R-G-B filters High-quality anti-reflective ...

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    Original price $306.16 USD
    Original price $306.16 USD - Original price $306.16 USD
    Original price $306.16 USD
    Current price $209.94 USD
    $209.94 USD - $209.94 USD
    Current price $209.94 USD
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  • Original price $275.00 USD - Original price $725.00 USD
    Original price $275.00 USD - Original price $725.00 USD
    Original price $275.00 USD
    $247.50 USD - $652.50 USD
    $247.50 USD - $652.50 USD
    Current price $247.50 USD

    Chroma B-Bessel Filter

    Options available

    Blue photometric filter in UVBRI series Filters designed for use with CCD and for f/4.0 or slower No reflections leading to image distortions or ""...

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    Original price $275.00 USD - Original price $725.00 USD
    Original price $275.00 USD - Original price $725.00 USD
    Original price $275.00 USD
    $247.50 USD - $652.50 USD
    $247.50 USD - $652.50 USD
    Current price $247.50 USD
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  • Original price $150.00 USD - Original price $500.00 USD
    Original price $150.00 USD - Original price $500.00 USD
    Original price $150.00 USD
    $135.00 USD - $450.00 USD
    $135.00 USD - $450.00 USD
    Current price $135.00 USD

    Chroma Blue Filter

    Options available

    Blue filter for color rendering with RGB set Filters designed for use with CCD and for f/4.0 or slower No reflections leading to image distortions ...

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    Original price $150.00 USD - Original price $500.00 USD
    Original price $150.00 USD - Original price $500.00 USD
    Original price $150.00 USD
    $135.00 USD - $450.00 USD
    $135.00 USD - $450.00 USD
    Current price $135.00 USD
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  • Original price $130.00 USD - Original price $375.00 USD
    Original price $130.00 USD - Original price $375.00 USD
    Original price $130.00 USD
    $117.00 USD - $337.50 USD
    $117.00 USD - $337.50 USD
    Current price $117.00 USD

    Chroma Clear Filter

    Options available

    Filters designed for use with CCD and for f/4.0 or slower No reflections leading to image distortions or "back reflections" Transmitted wavefront ...

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    Original price $130.00 USD - Original price $375.00 USD
    Original price $130.00 USD - Original price $375.00 USD
    Original price $130.00 USD
    $117.00 USD - $337.50 USD
    $117.00 USD - $337.50 USD
    Current price $117.00 USD
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  • Original price $150.00 USD - Original price $500.00 USD
    Original price $150.00 USD - Original price $500.00 USD
    Original price $150.00 USD
    $135.00 USD - $450.00 USD
    $135.00 USD - $450.00 USD
    Current price $135.00 USD

    Chroma Green Filter

    Options available

    Green filter for color rendering with RGB set Filters designed for use with CCD and for f/4.0 or slower No reflections leading to image distortions...

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    Original price $150.00 USD - Original price $500.00 USD
    Original price $150.00 USD - Original price $500.00 USD
    Original price $150.00 USD
    $135.00 USD - $450.00 USD
    $135.00 USD - $450.00 USD
    Current price $135.00 USD
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  • Original price $575.00 USD - Original price $1,550.00 USD
    Original price $575.00 USD - Original price $1,550.00 USD
    Original price $575.00 USD
    $517.50 USD - $1,395.00 USD
    $517.50 USD - $1,395.00 USD
    Current price $517.50 USD

    Chroma H-alpha Filter - 3nm

    Options available

    H-alpha filters are essential for imaging nebulae and other objects which are rich in ionized hydrogen. At 656.3nm, a narrow-band emission filter i...

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    Original price $575.00 USD - Original price $1,550.00 USD
    Original price $575.00 USD - Original price $1,550.00 USD
    Original price $575.00 USD
    $517.50 USD - $1,395.00 USD
    $517.50 USD - $1,395.00 USD
    Current price $517.50 USD
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  • Original price $460.00 USD - Original price $1,380.00 USD
    Original price $460.00 USD - Original price $1,380.00 USD
    Original price $460.00 USD
    $414.00 USD - $1,242.00 USD
    $414.00 USD - $1,242.00 USD
    Current price $414.00 USD

    Chroma H-alpha Filter - 5nm

    Options available

    H-alpha filters are essential for imaging nebulae and other objects which are rich in ionized hydrogen. At 656.3nm, a narrow-band emission filter i...

    View full details
    Original price $460.00 USD - Original price $1,380.00 USD
    Original price $460.00 USD - Original price $1,380.00 USD
    Original price $460.00 USD
    $414.00 USD - $1,242.00 USD
    $414.00 USD - $1,242.00 USD
    Current price $414.00 USD
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  • Original price $275.00 USD - Original price $830.00 USD
    Original price $275.00 USD - Original price $830.00 USD
    Original price $275.00 USD
    $247.50 USD - $747.00 USD
    $247.50 USD - $747.00 USD
    Current price $247.50 USD

    Chroma H-alpha Filter - 8nm

    Options available

    H-alpha filters are essential for imaging nebulae and other objects which are rich in ionized hydrogen. At 656.3nm, a narrow-band emission filter i...

    View full details
    Original price $275.00 USD - Original price $830.00 USD
    Original price $275.00 USD - Original price $830.00 USD
    Original price $275.00 USD
    $247.50 USD - $747.00 USD
    $247.50 USD - $747.00 USD
    Current price $247.50 USD
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  • Original price $575.00 USD - Original price $1,550.00 USD
    Original price $575.00 USD - Original price $1,550.00 USD
    Original price $575.00 USD
    $517.50 USD - $1,395.00 USD
    $517.50 USD - $1,395.00 USD
    Current price $517.50 USD

    Chroma H-alpha Filter Optimized for f/3 - 3nm

    Options available

    H-alpha filters are essential for imaging nebulae and other objects which are rich in ionized hydrogen. At 656.3nm, a narrow-band emission filter i...

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    Original price $575.00 USD - Original price $1,550.00 USD
    Original price $575.00 USD - Original price $1,550.00 USD
    Original price $575.00 USD
    $517.50 USD - $1,395.00 USD
    $517.50 USD - $1,395.00 USD
    Current price $517.50 USD
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  • Original price $575.00 USD - Original price $1,550.00 USD
    Original price $575.00 USD - Original price $1,550.00 USD
    Original price $575.00 USD
    $517.50 USD - $1,395.00 USD
    $517.50 USD - $1,395.00 USD
    Current price $517.50 USD

    Chroma H-beta Filter - 3nm

    Options available

    H-beta filters are also useful for imaging nebulae and objects rich in ionized hydrogen. At 486.1nm, a narrow-band filter is required to separate H...

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    Original price $575.00 USD - Original price $1,550.00 USD
    Original price $575.00 USD - Original price $1,550.00 USD
    Original price $575.00 USD
    $517.50 USD - $1,395.00 USD
    $517.50 USD - $1,395.00 USD
    Current price $517.50 USD
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  • Original price $460.00 USD - Original price $1,380.00 USD
    Original price $460.00 USD - Original price $1,380.00 USD
    Original price $460.00 USD
    $414.00 USD - $1,242.00 USD
    $414.00 USD - $1,242.00 USD
    Current price $414.00 USD

    Chroma H-beta Filter - 5nm

    Options available

    H-beta filters are also useful for imaging nebulae and objects rich in ionized hydrogen. At 486.1nm, a narrow-band filter is required to separate H...

    View full details
    Original price $460.00 USD - Original price $1,380.00 USD
    Original price $460.00 USD - Original price $1,380.00 USD
    Original price $460.00 USD
    $414.00 USD - $1,242.00 USD
    $414.00 USD - $1,242.00 USD
    Current price $414.00 USD
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  • Original price $775.00 USD - Original price $3,350.00 USD
    Original price $775.00 USD - Original price $3,350.00 USD
    Original price $775.00 USD
    $697.50 USD - $3,015.00 USD
    $697.50 USD - $3,015.00 USD
    Current price $697.50 USD

    Chroma HaLRGB Filter Set

    Options available

    8nm H-alpha, Luminance, Red, Green, and Blue astronomy filter set Filters designed for use with CCD and for f/4.0 or slower No reflections leading ...

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    Original price $775.00 USD - Original price $3,350.00 USD
    Original price $775.00 USD - Original price $3,350.00 USD
    Original price $775.00 USD
    $697.50 USD - $3,015.00 USD
    $697.50 USD - $3,015.00 USD
    Current price $697.50 USD
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  • Original price $275.00 USD - Original price $725.00 USD
    Original price $275.00 USD - Original price $725.00 USD
    Original price $275.00 USD
    $247.50 USD - $652.50 USD
    $247.50 USD - $652.50 USD
    Current price $247.50 USD

    Chroma I-Bessel Filter

    Options available

    NIR photometric filter in UVBRI series Filters designed for use with CCD and for f/4.0 or slower No reflections leading to image distortions or ""b...

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    Original price $275.00 USD - Original price $725.00 USD
    Original price $275.00 USD - Original price $725.00 USD
    Original price $275.00 USD
    $247.50 USD - $652.50 USD
    $247.50 USD - $652.50 USD
    Current price $247.50 USD
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  • Original price $275.00 USD - Original price $790.00 USD
    Original price $275.00 USD - Original price $790.00 USD
    Original price $275.00 USD
    $247.50 USD - $711.00 USD
    $247.50 USD - $711.00 USD
    Current price $247.50 USD

    Chroma Jovian Methane Filter

    Options available

    Methane absorption band filter. This filter enhances contrast when imaging objects containing significant levels of methane. Methane-rich component...

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    Original price $275.00 USD - Original price $790.00 USD
    Original price $275.00 USD - Original price $790.00 USD
    Original price $275.00 USD
    $247.50 USD - $711.00 USD
    $247.50 USD - $711.00 USD
    Current price $247.50 USD
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  • Original price $275.00 USD - Original price $550.00 USD
    Original price $275.00 USD - Original price $550.00 USD
    Original price $275.00 USD
    $247.50 USD - $495.00 USD
    $247.50 USD - $495.00 USD
    Current price $247.50 USD

    Chroma LoGlow Filter

    Options available

    Blocks common spectral lines from lighting sources. This filter provides balanced color for the visible spectrum while blocking most emission from ...

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    Original price $275.00 USD - Original price $550.00 USD
    Original price $275.00 USD - Original price $550.00 USD
    Original price $275.00 USD
    $247.50 USD - $495.00 USD
    $247.50 USD - $495.00 USD
    Current price $247.50 USD
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  • Original price $525.00 USD - Original price $1,925.00 USD
    Original price $525.00 USD - Original price $1,925.00 USD
    Original price $525.00 USD
    $472.50 USD - $1,732.50 USD
    $472.50 USD - $1,732.50 USD
    Current price $472.50 USD

    Chroma LRGB Filter Set

    Options available

    Luminance, Red, Green, and Blue astronomy filter set Filters designed for use with CCD and for f/4.0 or slower No reflections leading to image dist...

    View full details
    Original price $525.00 USD - Original price $1,925.00 USD
    Original price $525.00 USD - Original price $1,925.00 USD
    Original price $525.00 USD
    $472.50 USD - $1,732.50 USD
    $472.50 USD - $1,732.50 USD
    Current price $472.50 USD
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  • Original price $150.00 USD - Original price $500.00 USD
    Original price $150.00 USD - Original price $500.00 USD
    Original price $150.00 USD
    $135.00 USD - $450.00 USD
    $135.00 USD - $450.00 USD
    Current price $135.00 USD

    Chroma Luminance Filter

    Options available

    Luminance filter for enhancing color rendering with RGB set Filters designed for use with CCD and for f/4.0 or slower No reflections leading to ima...

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    Original price $150.00 USD - Original price $500.00 USD
    Original price $150.00 USD - Original price $500.00 USD
    Original price $150.00 USD
    $135.00 USD - $450.00 USD
    $135.00 USD - $450.00 USD
    Current price $135.00 USD
    Save up to 10% Save %
  • Original price $575.00 USD - Original price $1,550.00 USD
    Original price $575.00 USD - Original price $1,550.00 USD
    Original price $575.00 USD
    $517.50 USD - $1,395.00 USD
    $517.50 USD - $1,395.00 USD
    Current price $517.50 USD

    Chroma OIII Filter - 3nm

    Options available

    Chroma’s OIII filters isolate the 500.7nm primary emission line of doubly ionized oxygen. After H-alpha, this is the next most common emission when...

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    Original price $575.00 USD - Original price $1,550.00 USD
    Original price $575.00 USD - Original price $1,550.00 USD
    Original price $575.00 USD
    $517.50 USD - $1,395.00 USD
    $517.50 USD - $1,395.00 USD
    Current price $517.50 USD
    Save up to 10% Save %
  • Original price $460.00 USD - Original price $1,380.00 USD
    Original price $460.00 USD - Original price $1,380.00 USD
    Original price $460.00 USD
    $414.00 USD - $1,242.00 USD
    $414.00 USD - $1,242.00 USD
    Current price $414.00 USD

    Chroma OIII Filter - 5nm

    Options available

    Chroma’s OIII filters isolate the 500.7nm primary emission line of doubly ionized oxygen. After H-alpha, this is the next most common emission when...

    View full details
    Original price $460.00 USD - Original price $1,380.00 USD
    Original price $460.00 USD - Original price $1,380.00 USD
    Original price $460.00 USD
    $414.00 USD - $1,242.00 USD
    $414.00 USD - $1,242.00 USD
    Current price $414.00 USD
    Save up to 10% Save %
  • Original price $275.00 USD - Original price $830.00 USD
    Original price $275.00 USD - Original price $830.00 USD
    Original price $275.00 USD
    $247.50 USD - $747.00 USD
    $247.50 USD - $747.00 USD
    Current price $247.50 USD

    Chroma OIII Filter - 8nm

    Options available

    Chroma’s OIII filters isolate the 500.7nm primary emission line of doubly ionized oxygen. After H-alpha, this is the next most common emission when...

    View full details
    Original price $275.00 USD - Original price $830.00 USD
    Original price $275.00 USD - Original price $830.00 USD
    Original price $275.00 USD
    $247.50 USD - $747.00 USD
    $247.50 USD - $747.00 USD
    Current price $247.50 USD
    Save up to 10% Save %