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ZWO Seestar S30 Desktop
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.

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Narrowband Filters

  • 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 $988.00 USD - Original price $2,199.00 USD
    Original price
    $988.00 USD - $2,199.00 USD
    $988.00 USD - $2,199.00 USD
    Current price $988.00 USD

    Baader 3.5/4nm f/2 Ultra-Highspeed Filter Set - CMOS-Optimized H-alpha/O-III/S-II

    Options available

    f/2 Highspeed Filterset consisting of 3 Filter: H-alpha, O III and S II. Highspeed Narrowband Filter are designed especially for the delicate requ...

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    Original price $988.00 USD - Original price $2,199.00 USD
    Original price
    $988.00 USD - $2,199.00 USD
    $988.00 USD - $2,199.00 USD
    Current price $988.00 USD
  • Original price $970.00 USD - Original price $2,070.00 USD
    Original price
    $970.00 USD - $2,070.00 USD
    $970.00 USD - $2,070.00 USD
    Current price $970.00 USD

    Baader 3.5nm / 4nm Narrowband Filter Set - CMOS-Optimized H-alpha/O-III/S-II

    Options available

    Baader H-alpha / O-III / S-II Ultra-Narrowband (Narrowband) filter set - Premium Grade 3.5 / 4 nm half width (to harmonize the exposure time of H-...

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    Original price $970.00 USD - Original price $2,070.00 USD
    Original price
    $970.00 USD - $2,070.00 USD
    $970.00 USD - $2,070.00 USD
    Current price $970.00 USD
  • Original price $334.00 USD - Original price $722.00 USD
    Original price
    $334.00 USD - $722.00 USD
    $334.00 USD - $722.00 USD
    Current price $334.00 USD

    Baader 4nm Ultra-Narrowband OIII Filter - CMOS-Optimized

    Options available

    Baader H-alpha / O-III / S-II Ultra-Narrowband (Narrowband) filter set - Premium Grade 3.5 / 4 nm half width (to harmonize the exposure time of H-...

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    Original price $334.00 USD - Original price $722.00 USD
    Original price
    $334.00 USD - $722.00 USD
    $334.00 USD - $722.00 USD
    Current price $334.00 USD
  • Original price $573.00 USD - Original price $1,368.00 USD
    Original price
    $573.00 USD - $1,368.00 USD
    $573.00 USD - $1,368.00 USD
    Current price $573.00 USD

    Baader 6.5nm f/2 Highspeed Filter Set - CMOS-Optimized H-alpha/O-III/S-II

    Options available
    1 variants in stock

    f/2 Highspeed Filterset consisting of 3 Filter: H-alpha, O III and S II. Highspeed Narrowband Filter are designed especially for the delicate requ...

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    Original price $573.00 USD - Original price $1,368.00 USD
    Original price
    $573.00 USD - $1,368.00 USD
    $573.00 USD - $1,368.00 USD
    Current price $573.00 USD
  • Original price $196.00 USD - Original price $502.00 USD
    Original price
    $196.00 USD - $502.00 USD
    $196.00 USD - $502.00 USD
    Current price $196.00 USD

    Baader 6.5nm H-alpha Filter - CMOS-Optimized

    Options available

    Baader H-alpha / O-III / S-II Narrowband Filter Set - Precision Grade 6.5 nm FWHM, recommended for optical systems from f / 10 to f / 3.5 Reflex-...

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    Original price $196.00 USD - Original price $502.00 USD
    Original price
    $196.00 USD - $502.00 USD
    $196.00 USD - $502.00 USD
    Current price $196.00 USD
  • Original price $535.00 USD - Original price $1,345.00 USD
    Original price
    $535.00 USD - $1,345.00 USD
    $535.00 USD - $1,345.00 USD
    Current price $535.00 USD

    Baader 6.5nm Narrowband Filter Set - CMOS-Optimized H-alpha/O-III/S-II

    Options available

    Baader H-alpha / O-III / S-II Narrowband Filter Set - Precision Grade 6.5 nm FWHM, recommended for optical systems from f / 10 to f / 3.5 Reflex-...

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    Original price $535.00 USD - Original price $1,345.00 USD
    Original price
    $535.00 USD - $1,345.00 USD
    $535.00 USD - $1,345.00 USD
    Current price $535.00 USD
  • Original price $187.00 USD - Original price $491.00 USD
    Original price
    $187.00 USD - $491.00 USD
    $187.00 USD - $491.00 USD
    Current price $187.00 USD

    Baader 6.5nm OIII Filter - CMOS-Optimized

    Options available

    6.5 nm FWHM, recommended for optical systems from f / 10 to f / 3.5 Reflex-Blocker ™ hard coated and planoptically polished - with sealed coating...

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    Original price $187.00 USD - Original price $491.00 USD
    Original price
    $187.00 USD - $491.00 USD
    $187.00 USD - $491.00 USD
    Current price $187.00 USD
  • Original price $184.00 USD - Original price $488.00 USD
    Original price
    $184.00 USD - $488.00 USD
    $184.00 USD - $488.00 USD
    Current price $184.00 USD

    Baader 6.5nm SII Filter - CMOS-Optimized

    Options available

    6.5 nm FWHM, recommended for optical systems from f / 10 to f / 3.5 Reflex-Blocker ™ hard coated and planoptically polished - with sealed coating...

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    Original price $184.00 USD - Original price $488.00 USD
    Original price
    $184.00 USD - $488.00 USD
    $184.00 USD - $488.00 USD
    Current price $184.00 USD
  • Original price $109.00 USD - Original price $264.00 USD
    Original price
    $109.00 USD - $264.00 USD
    $109.00 USD - $264.00 USD
    Current price $109.00 USD

    Baader H-Alpha CCD Filter -35nm

    Options available

    Premium grade H-alpha interline chip CCD-filter for fast optical systems f/10 to f/2.8 IR-blocked NO halos, NO reflections, NO ghosting Non-aging ...

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    Original price $109.00 USD - Original price $264.00 USD
    Original price
    $109.00 USD - $264.00 USD
    $109.00 USD - $264.00 USD
    Current price $109.00 USD
  • Original price $575.00 USD - Original price $1,550.00 USD
    Original price
    $575.00 USD - $1,550.00 USD
    $575.00 USD - $1,550.00 USD
    Current price $575.00 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 - $1,550.00 USD
    $575.00 USD - $1,550.00 USD
    Current price $575.00 USD
  • Original price $460.00 USD - Original price $1,380.00 USD
    Original price
    $460.00 USD - $1,380.00 USD
    $460.00 USD - $1,380.00 USD
    Current price $460.00 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...

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    Original price $460.00 USD - Original price $1,380.00 USD
    Original price
    $460.00 USD - $1,380.00 USD
    $460.00 USD - $1,380.00 USD
    Current price $460.00 USD
  • Original price $275.00 USD - Original price $830.00 USD
    Original price
    $275.00 USD - $830.00 USD
    $275.00 USD - $830.00 USD
    Current price $275.00 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...

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    Original price $275.00 USD - Original price $830.00 USD
    Original price
    $275.00 USD - $830.00 USD
    $275.00 USD - $830.00 USD
    Current price $275.00 USD
  • Original price $575.00 USD - Original price $1,550.00 USD
    Original price
    $575.00 USD - $1,550.00 USD
    $575.00 USD - $1,550.00 USD
    Current price $575.00 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...

    View full details
    Original price $575.00 USD - Original price $1,550.00 USD
    Original price
    $575.00 USD - $1,550.00 USD
    $575.00 USD - $1,550.00 USD
    Current price $575.00 USD
  • Original price $575.00 USD - Original price $1,550.00 USD
    Original price
    $575.00 USD - $1,550.00 USD
    $575.00 USD - $1,550.00 USD
    Current price $575.00 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 - $1,550.00 USD
    $575.00 USD - $1,550.00 USD
    Current price $575.00 USD
  • Original price $460.00 USD - Original price $1,380.00 USD
    Original price
    $460.00 USD - $1,380.00 USD
    $460.00 USD - $1,380.00 USD
    Current price $460.00 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 - $1,380.00 USD
    $460.00 USD - $1,380.00 USD
    Current price $460.00 USD
  • Original price $575.00 USD - Original price $1,550.00 USD
    Original price
    $575.00 USD - $1,550.00 USD
    $575.00 USD - $1,550.00 USD
    Current price $575.00 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 - $1,550.00 USD
    $575.00 USD - $1,550.00 USD
    Current price $575.00 USD
  • Original price $460.00 USD - Original price $1,380.00 USD
    Original price
    $460.00 USD - $1,380.00 USD
    $460.00 USD - $1,380.00 USD
    Current price $460.00 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 - $1,380.00 USD
    $460.00 USD - $1,380.00 USD
    Current price $460.00 USD
  • Original price $275.00 USD - Original price $830.00 USD
    Original price
    $275.00 USD - $830.00 USD
    $275.00 USD - $830.00 USD
    Current price $275.00 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 - $830.00 USD
    $275.00 USD - $830.00 USD
    Current price $275.00 USD
  • Original price $575.00 USD - Original price $1,550.00 USD
    Original price
    $575.00 USD - $1,550.00 USD
    $575.00 USD - $1,550.00 USD
    Current price $575.00 USD

    Chroma OIII Filter Optimized for f/3 - 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...

    View full details
    Original price $575.00 USD - Original price $1,550.00 USD
    Original price
    $575.00 USD - $1,550.00 USD
    $575.00 USD - $1,550.00 USD
    Current price $575.00 USD
  • Original price $575.00 USD - Original price $1,550.00 USD
    Original price
    $575.00 USD - $1,550.00 USD
    $575.00 USD - $1,550.00 USD
    Current price $575.00 USD

    Chroma SII Filter - 3nm

    Options available

    SII filters isolate the spectral emission of singly ionized sulfur atoms, also common in nebulae. Emission is at two lines occurring as a doublet, ...

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    Original price $575.00 USD - Original price $1,550.00 USD
    Original price
    $575.00 USD - $1,550.00 USD
    $575.00 USD - $1,550.00 USD
    Current price $575.00 USD
  • Original price $460.00 USD - Original price $1,380.00 USD
    Original price
    $460.00 USD - $1,380.00 USD
    $460.00 USD - $1,380.00 USD
    Current price $460.00 USD

    Chroma SII Filter - 5nm

    Options available

    SII filters isolate the spectral emission of singly ionized sulfur atoms, also common in nebulae. Emission is at two lines occurring as a doublet, ...

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

    Chroma SII Filter - 8nm

    Options available

    SII filters isolate the spectral emission of singly ionized sulfur atoms, also common in nebulae. Emission is at two lines occurring as a doublet, ...

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

    Chroma SII Filter Optimized for f/3 - 3nm

    Options available

    SII filters isolate the spectral emission of singly ionized sulfur atoms, also common in nebulae. Emission is at two lines occurring as a doublet, ...

    View full details
    Original price $575.00 USD - Original price $1,550.00 USD
    Original price
    $575.00 USD - $1,550.00 USD
    $575.00 USD - $1,550.00 USD
    Current price $575.00 USD