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  1. 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.

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    (48 States)
    Model#: BE410
    $450.00

  2. IDAS Hutech 52mm UV/IR Blocking Filter

    IDAS - Hutech - 52mm UV/IR Blocking Filter

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    Model#: UIBAR-52
    $179.00

  3. IDAS - Hutech - 48mm (for 2") UV/IR Blocking Filter

    IDAS - Hutech - 48mm (for 2") UV/IR Blocking Filter

    "A chain is only as good as its weakest link." This well-known truth applies to many "chains", including the optical chain, which includes a telescope, eyepiece, and filter.

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    Model#: UIBAR-48
    $179.00

  4. IDAS Hutech 28.6mm (for 1.25") UB/IR Blocking Filter
  5. IDAS - Hutech - AP Filter Holder with 72mm LPS Filter

    IDAS - Hutech - AP Filter Holder with 72mm LPS Filter

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    (48 States)
    Model#: LPS-P2-72AP
    $365.00

  6. IDAS - Hutech - SCT Filter adapter with 48mm LPS Filter

    IDAS - Hutech - SCT Filter adapter with 48mm LPS Filter

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    (48 States)
    Model#: LPS-P2-48SCT
    $265.00

  7. IDAS - Hutech - 82mm LPS Filter

    IDAS - Hutech - 82mm LPS Filter

    Light pollution suppression (LPS) filters are designed to suppress the common emission lines generated by artificial lighting, yet allow the important nebula emission lines to pass, thus enhancing the contrast of astronomical objects, particularly emission nebulae.

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    (48 States)
    Model#: LPS-P2-82
    $369.00

  8. IDAS - Hutech - 72mm LPS Filter

    IDAS - Hutech - 72mm LPS Filter

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    (48 States)
    Model#: LPS-P2-72
    $299.00

  9. IDAS - Hutech - 52mm LPS Filter

    IDAS - Hutech - 52mm LPS Filter

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    Model#: LPS-P2-52
    $189.00

  10. Orion - 2" Extra Narrowband Filter Set

    Orion - 2" Extra Narrowband Filter Set

    These specialized astrophotography filters pass select wavelengths and essentially block all other wavelengths of light, including light pollution, so you can capture images in less than ideal conditions.

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    Model#: 25545
    $969.95

  11. 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).

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    Model#: 05547
    $359.95

  12. 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.

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    Model#: 05546
    $359.95

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

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

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

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    (48 States)
    Model#: i'2-50R
    $400.00

  14. Astrodon - Photometric Sloan - 1.25" Mounted Gen2 i' Edge Blackened Filter

    Astrodon - Photometric Sloan - 1.25" Mounted Gen2 i' 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#: i'2-27R
    $200.00

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

    Astrodon - Photometric Sloan - 50mm Unmounted Gen2 r' 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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    (48 States)
    Model#: r'2-50S
    $440.00

  16. Astrodon Photometric Sloan 50mm Unmounted Gen2 r' Edge Blackened Filter

    Astrodon - Photometric Sloan - 50mm Unmounted 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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    FREE SHIPPING
    (48 States)
    Model#: r'2-50R
    $400.00

  17. 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

  18. Astrodon Photometric Sloan 50mm Unmounted Gen2 g' Edge Blackened Filter

    Astrodon - Photometric Sloan - 50mm Unmounted Gen2 g' 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#: g'2-50R
    $400.00

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

    Astrodon - Photometric Sloan - 1.25" Mounted Gen2 g' 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#: g'2-27R
    $200.00

  20. Astrodon Photometric Sloan 50mm Unmounted Gen2 u' Edge Blackened Square Filter

    Astrodon - Photometric Sloan - 50mm Unmounted Gen2 u' 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#: u'2-50S
    $440.00

Items 21 to 40 of 990 total

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