Happily Serving You in the Same Location for Over 58 Years!

Welcome!

Filters

Items 41 to 60 of 337 total

per page
Page:
  1. 3

Set Descending Direction
  1. IDAS - Hutech - UV/IR Blocking Filter (to be used with MFA37)

    IDAS - Hutech - UV/IR Blocking Filter (to be used with MFA37)

    IDAS Hutech UV/IR Blocking Filter (to be used with MFA37).

    ...
    Learn More
    Model#: UIBAR-37
    $179.00

  2. Chroma filters

    Chroma Technology - Blue 36mm Diameter Filter - Unmounted

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

    ...
    Learn More
    Model#: Blue-36
    $155.00

  3. Astrodon - 1.25" Gen 2 Parfocal UV Blocked Clear Filter

    Astrodon - 1.25" Gen 2 Parfocal UV Blocked Clear 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.

    ...
    Learn More
    Model#: C2-27R_gen2
    $140.00

  4. IDAS - Hutech - 1.25" Venus Filter

    IDAS - Hutech - 1.25" Venus Filter

    This filter is used for imaging Venus (increases contrast for lower atmosphere cloud structures).

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: VW-1
    $495.00

  5. IDAS - Hutech - 1.25" Jupiter and Saturn Methane Filter

    IDAS - Hutech - 1.25" Jupiter and Saturn Methane Filter

    This filter is used to image Jupiter and Saturn. The bandpass enhances contrast in the methane band.

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: BPF
    $395.00

  6. Astrodon - Photometric Sloan - 50mm Unmounted Gen2 g' Edge Blackened Square Filter

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

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

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

  7. FLI - Research Grade 28mm Luminance Filter

    FLI - Research Grade 28mm Luminance Filter

    FLI high transmission filters are manufactured in the United States with the highest quality fabrication techniques available. FLI offers a full line of filter types and sizes. Complete sets are available as well as individual filters in both round and square shapes.

    ...
    Learn More
    Model#: RG-28D-L
    $140.00

  8. FLI - 28mm Research Grade Filters - LRGB and UBVRI

    FLI - 28mm Research Grade Filters - LRGB and UBVRI

    ... Learn More
    Model#: RG 28D Filters

    Starting at: $140.00

  9. Baader Planetarium - 1.25" LRGB Filters - UV/IR Cut L-Filter

    Baader Planetarium - 1.25" LRGB Filters - UV/IR Cut L-Filter

    ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: FLRGB-1
    $359.00

  10. Baader Planetarium - 1.25" LRGBC Filters UV/IR Cut L-Filter and Clear Filter

    Baader Planetarium - 1.25" LRGBC Filters - UV/IR Cut L-Filter and Clear Filter

    Baader 1.25" RGB Filter Set with UV/IR Cut L-Filter and Clear Focusing Filter (Optically Polished) - Set of 5 filters.

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: FLRGBC-1
    $415.00

  11. Baader Planetarium - 2" LRGB Filters - UV/IR Cut L-Filter

    Baader Planetarium - 2" LRGB Filters - UV/IR Cut L-Filter

    ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: FLRGB-2
    $567.00

  12. IDAS Hutech 1.25" Mars Filter

    IDAS - Hutech - 1.25" Mars Filter

    This filter is used to image Mars. It enhances the visibility of atmospheric water vapor clouds.

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: BE410
    $450.00

  13. Astrodon - Narrowband - 36mm Unmounted SII 3 nm Filter

    Astrodon - Narrowband - 36mm Unmounted SII 3 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),

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: SII3-36R
    $650.00

  14. Astrodon - Narrowband - 36mm Unmounted H-Alpha 3 nm Filter

    Astrodon - Narrowband - 36mm Unmounted H-Alpha 3 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),

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: HA3-36R
    $650.00

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

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

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: C2_50R_Gen2
    $250.00

  16. 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.

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: C2_50S_Gen2
    $295.00

  17. Orion - 2" Extra-Narrowband Oxygen III Filter

    Orion - 2" Extra-Narrowband Oxygen III Filter

    If you're using a monochrome CCD camera like Orion's Parsec 8300M, these specialized "line" filters are the perfect complement. Orion's 2" Oxygen-III Filter has a full-width half maximum (FWHM) bandpass of just 7nm, ensuring high-contrast images, even in heavily light-polluted or brightly moonlit skies. The filter can be used separately or in combination with a filter wheel for advanced tri-color imaging of emission nebulae.

    ...
    Learn More
    Model#: 05545
    $359.95

  18. Orion - 2" Extra-Narrowband Sulfur-II Filter

    Orion - 2" Extra-Narrowband Sulfur-II Filter

    Effectively blacken the background sky with extra-narrowband filters to produce striking, high-contrast astrophotography of emission nebulae. Orion's 2" Extra-Narrowband Sulfur-II Imaging Filter will do just that. It is ideal for use with monochrome CCD cameras like Orion's Parsec 8300M.

    ...
    Learn More
    Model#: 05546
    $359.95

  19. Orion - 2" Extra-Narrowband Hydrogen Alpha Filter

    Orion - 2" Extra-Narrowband Hydrogen Alpha Filter

    Filter for astrophotography transmits 90% of light at 656.3nm wavelength (H-alpha).

    ...
    Learn More
    Model#: 05547
    $359.95

  20. Opticstar - 2" Nebula Deep Sky Filter

    Opticstar - 2" Nebula Deep Sky Filter

    This Opticstar 2" eyepiece is suitable for both visual observation and imaging these are all-in-one high-transmission deep sky filters.

    ...
    Learn More
    Model#: OSRIFNEB2

    Regular Price: $105.00

    Special Price: $99.75

Items 41 to 60 of 337 total

per page
Page:
  1. 3

Set Descending Direction