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  1. Optec - Astrodon "I"-series LRBG filter set, 50mm diameter x 3mm thick.

    Optec - Astrodon "I"-series LRBG filter set, 50mm diameter x 3mm thick.

    Astrodon Tru-Balance RGB filters have revolutionized CCD ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: 19125
    $825.00

  2. Optec - Astrodon Rc photometric filter, 50mm diameter, 3mm thick.

    Optec - Astrodon Rc photometric filter, 50mm diameter, 3mm thick.

    Astrodon Photometrics UVBRcIc filters adhere to the Johnson/Cousins designs as ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: 19434
    $320.00

  3. Optec - Astrodon Ic photometric filter, 50mm diameter, 3mm thick.

    Optec - Astrodon Ic photometric filter, 50mm diameter, 3mm thick.

    Astrodon Photometrics UVBRcIc filters adhere to the Johnson/Cousins designs as ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: 19435
    $320.00

  4. Optec - Astrodon Clear filter with UV blocking, 50mm dia., 2mm thick.

    Optec - Astrodon Clear filter with UV blocking, 50mm dia., 2mm thick.

    Astrodon Photometrics UVBRcIc filters adhere to the Johnson/Cousins designs as ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: 19436
    $225.00

  5. Orion OIII Nebula Telescope Filter 1.25"

    Orion - OIII Nebula Telescope Filter 1.25"

    1.25in ... Learn More
    Model#: ORI-05581
    $116.99

  6. QSI - Astrodon 1.25" BVRIc Photometric filters

    QSI - Astrodon 1.25" BVRIc Photometric filters

    Astrodon 1 ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: FL1-AD-BVRI
    $780.00

  7. QSI - Astrodon 1.25" Hydrogen-alpha filter 3 nm FWHM

    QSI - Astrodon 1.25" Hydrogen-alpha filter 3 nm FWHM

    Astrodon Hydrogen-Alpha filter with a FWHM of 3nm. For use with internal color filter wheel in QSI 500 Series cameras. This Ha filter is parfocal with Astrodon LRGB color filters ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: FL1-AD-HA3
    $480.00

  8. QSI - Astrodon 1.25" Hydrogen-alpha filter 5 nm FWHM

    QSI - Astrodon 1.25" Hydrogen-alpha filter 5 nm FWHM

    Astrodon Hydrogen-Alpha filter with a FWHM of 5nm. For use with internal color filter wheel in QSI 500 Series cameras. This Ha filter is parfocal with Astrodon LRGB Gen2 color filters ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: FL1-AD-HA5
    $320.00

  9. QSI - Astrodon 1.25" luminance filter

    QSI - Astrodon 1.25" luminance filter

    Astrodon 1.25" Luminance Filter for QSI.

    ...
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    Model#: FL1-AD-L
    $145.00

  10. QSI - Astrodon 1.25" NII filter 3 nm FWHM

    QSI - Astrodon 1.25" NII filter 3 nm FWHM

    Astrodon Nitrogen II filter with a FWHM of 3nm. For use with internal color filter wheel in QSI 500 Series cameras. This filter is parfocal with Astrodon LRGB Gen2 color filters ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: FL1-AD-NII3
    $480.00

  11. QSI - Astrodon 1.25" OIII filter 3 nm FWHM

    QSI - Astrodon 1.25" OIII filter 3 nm FWHM

    Astrodon Oxygen III filter with a FWHM of 3nm. For use with internal color filter wheel in QSI 500 Series cameras. This Ha filter is parfocal with Astrodon LRGB color filters ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: FL1-AD-OIII3
    $480.00

  12. QSI - Astrodon 1.25" OIII filter 5 nm FWHM

    QSI - Astrodon 1.25" OIII filter 5 nm FWHM

    Astrodon Oxygen III filter with a FWHM of 5nm. For use with internal color filter wheel in QSI 500 Series cameras. This Ha filter is parfocal with Astrodon LRGB color filters

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: FL1-AD-OIII5
    $275.00

  13. QSI - Astrodon 1.25" Red Continuum filter 5 nm FWHM

    QSI - Astrodon 1.25" Red Continuum filter 5 nm FWHM

    Astrodon Red Continuum filter centered on 645nm with a FWHM of 5nm. For use with internal color filter wheel in QSI 500 Series cameras ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: FL1-AD-RC5
    $320.00

  14. QSI - Astrodon 1.25" SII filter 3 nm FWHM

    QSI - Astrodon 1.25" SII filter 3 nm FWHM

    Astrodon Sulfur II filter with a FWHM of 3nm. For use with internal color filter wheel in QSI 500 Series cameras. This Ha filter is parfocal with Astrodon LRGB Gen2 olor filters ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: FL1-AD-SII3
    $480.00

  15. QSI - Astrodon 1.25" SII filter 5 nm FWHM

    QSI - Astrodon 1.25" SII filter 5 nm FWHM

    Astrodon Sulfur II filter with a FWHM of 5nm. For use with internal color filter wheel in QSI 500 Series cameras. This Ha filter is parfocal with Astrodon LRGB Gen2 color filters

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: FL1-AD-SII5
    $320.00

  16. Takahashi - 95mm UV-Haze Filter

    Takahashi - 95mm UV-Haze Filter

    Get rid of UV haze from observing using this brilliant 95mm filter special from Takahashi.

    ...
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    FREE SHIPPING
    (48 States)
    Model#: TFT0095
    $229.95

  17. TeleVue - OIII Bandmate Filter 1.25"*

    TeleVue - OIII Bandmate Filter 1.25"*

    This OIII filter particularly enhances planetary nebulae in larger telescopes Narrowband filter for high transmission, with high blocking of unwanted longer wavelengths to yield high-contrast images ... Learn More
    Model#: BFO-0125
    5% off

    Regular Price: $175.00

    Special Price: $166.25

  18. TeleVue - OIII Bandmate Filter 2"*

    TeleVue - OIII Bandmate Filter 2"*

    This OIII filter particularly enhances planetary nebulae in larger telescopes Narrowband filter for high transmission, with high blocking of unwanted longer wavelengths to yield high-contrast images ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: BFO-0200
    5% off

    Regular Price: $315.00

    Special Price: $299.25

  19. TO - LP-3  OIII (Green Cell)  2"

    TO - LP-3 OIII (Green Cell) 2"

    ... Learn More
    Model#: LP3-2
    $179.00

  20. TO - LP-4  H-Beta (Red Cell)  1.25"

    TO - LP-4 H-Beta (Red Cell) 1.25"

    Thousand Oaks Optical LP-4 H-Beta (Red Cell) 1.25" FilterEnhance your deep sky viewing with the latest in multi-layer coating technology. Thousand Oaks filters transmit desired wave-lengths in a very steep slope rather than ... Learn More
    Model#: LP4-1.25
    $89.00

Items 21 to 40 of 427 total

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