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  1. Astrodon - Narrowband - 65mm Unmounted H-Alpha 5 nm Square Filter

    Astrodon - Narrowband - 65mm Unmounted H-Alpha 5 nm Square 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),

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    (48 States)
    Model#: HA5-65S
    $1,050.00

  2. FLI - Research Grade Luminance Filter - 65mm Square Unmounted

    FLI - Research Grade Luminance Filter - 65mm Square Unmounted

    The 65mm square luminance or L FLI research grade filter is made to the most exacting standards in filter production. This square unmounted filter is typically part of an LRGB filter set intended for astrophotographic use. Luminance filters produce a white light image by blocking ultraviolet and inferred wavelengths. ... Learn More
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    (48 States)
    Model#: RG-65S-L
    $695.00

  3. FLI - Research Grade LRGB Filter Set - 65mm Square Unmounted

    FLI - Research Grade LRGB Filter Set - 65mm Square Unmounted

    The 65mm square LRGB FLI research grade filter set is made to the most exacting standards in filter production. Intended for astrophotographic use, the LRGB filter set contains four filters: luminance, red, green and blue. These filters, when used with a monochrome camera, can be layered to create full color images of nebulae, galaxies, star clusters or the planets. ... Learn More
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    (48 States)
    Model#: RG-65S-LRGB
    $2,595.00

  4. FLI - Research Grade 8nm H-Alpha Filter - 65mm Square Unmounted

    FLI - Research Grade 8nm H-Alpha Filter - 65mm Square Unmounted

    The 65mm square h-alpha 8nm FLI research grade filter is made to the most exacting standards in filter production. Hydrogen alpha filters increase contrast and enhance h-alpha regions found in nebulae making this a very useful filter for imaging in light polluted areas where visible portions of the spectrum are obscured. ... Learn More
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    (48 States)
    Model#: RG-65S-8NM
    $915.00

  5. FLI - Research Grade Clear Filter - 65mm Square Unmounted

    FLI - Research Grade Clear Filter - 65mm Square Unmounted

    The 65mm clear FLI research grade filter is made to the most exacting standards in filter production. This clear, square filter will transmit all light to producing white light images that include infrared and ultraviolet wavelengths. ... Learn More
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    (48 States)
    Model#: RG-65S-C
    $375.00

  6. Chroma filters

    Chroma Technology - 65mm x 65mm LRGB Filter and Ha/8-65 Set - Square

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

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    (48 States)
    Model#: HaLRGB-65S
    $3,495.00

  7. Chroma filters

    Chroma Technology - 65mm x 65mm LRGB Filter Set - Square

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

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    (48 States)
    Model#: LRGB-65S
    $2,595.00

  8. Chroma filters

    Chroma Technology - Ha/8-65mm x 65mm Diameter Filter - Square

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

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    (48 States)
    Model#: Ha/8-65S
    $915.00

  9. Chroma Technology - Luminance 65mm x 65mm Diameter Filter - Square

    Chroma Technology - Luminance 65mm x 65mm Diameter Filter - Square

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

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    (48 States)
    Model#: Lum-65S
    $695.00

  10. Chroma filters

    Chroma Technology - Red 65mm x 65mm Diameter Filter - Square

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

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    (48 States)
    Model#: Red-65S
    $695.00

  11. Chroma filters

    Chroma Technology - Green 65mm x 65mm Diameter Filter - Square

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

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    (48 States)
    Model#: Green-65S
    $695.00

  12. Chroma filters

    Chroma Technology - Blue 65mm x 65mm Diameter Filter - Square

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

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    (48 States)
    Model#: Blue-65S
    $695.00

  13. FLI - Research Grade UBVRI Filter Set - 65mm Square Unmounted

    FLI - Research Grade UBVRI Filter Set - 65mm Square Unmounted

    The 65mm square UBVRI FLI research grade filter set is made to the most exacting standards in filter production. Containing ultraviolet, blue, visual, red and infrared filters, UBVRI filter sets are used as an alternative to traditional LRGB filters to enhance specific regions of the spectrum. The result is a unique combination of a false color and color image based on the photometric system developed by MacDonald observatory. ... Learn More
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    (48 States)
    Model#: RG-65S-UBVRI
    $4,277.00

13 Item(s)

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