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  1. Astronomik - CLS Visual Light Pollution Filter - 50mm Round Unmounted

    Astronomik - CLS Visual Light Pollution Filter - 50mm Round Unmounted

    The Astronomik Visual CLS is a light pollution filter for black & white and color imaging of nebulae, galaxies and star clusters.

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    Model#: CLS-50R
    $159.95

  2. Baader Planetarium 1.25" Polarization Filter - Single

    Baader Planetarium - 1.25" Polarization Filter - Single

    The Baader Planetarium 1.25" Polarization filter can be threaded directly into an eyepiece, thereby making the switch from 1.25" eyepieces easy without removing the filter and maintaining a close distance between the eyepiece and filter.

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    Model#: FPOL-1
    $54.00

  3. Astrodon - 1.25" Mounted Astrodon Gen2 I-Series LRGB Filters (set of 4)

    Astrodon - 1.25" Mounted Astrodon Gen2 I-Series LRGB Filters (set of 4)

    TRU-BALANCE FILTERSSIMPLIFY YOUR IMAGINGGreat Filters Just Got Better - Generation 2 Now Shipping!        Astrodon Tru-Balance RGB filters have revolutionized CCD imaging ... Learn More
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    (48 States)
    Model#: LRGB2-I27R
    $475.00

  4. Astrodon - Tru-Balance I-Series - 1.25" Mounted CRGB Filter

    Astrodon - Tru-Balance I-Series - 1.25" Mounted CRGB Filter

    TRU-BALANCE FILTERSSIMPLIFY YOUR IMAGINGGreat Filters Just Got Better - Generation 2 Now Shipping!        Astrodon Tru-Balance RGB filters have revolutionized CCD imaging ... Learn More
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    (48 States)
    Model#: CRGB2-I27R
    $450.00

  5. Astrodon 50mm Unmounted Gen2 I-Series LRGB Filters (set of 4)

    Astrodon - 50mm Unmounted Gen2 I-Series LRGB Filters (set of 4)

    TRU-BALANCE FILTERSSIMPLIFY YOUR IMAGINGGreat Filters Just Got Better - Generation 2 Now Shipping!  Astrodon Tru-Balance RGB filters have revolutionized CCD imaging ... Learn More
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    (48 States)
    Model#: LRGB2-I50R
    $950.00

  6. Astrodon - Tru-Balance I-Series - 50mm dia. CRGB Filter

    Astrodon - Tru-Balance I-Series - 50mm dia. CRGB Filter

    TRU-BALANCE FILTERSSIMPLIFY YOUR IMAGINGGreat Filters Just Got Better - Generation 2 Now Shipping!  Astrodon Tru-Balance RGB filters have revolutionized CCD imaging ... Learn More
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    (48 States)
    Model#: CRGB2-I50R
    $875.00

  7. Astrodon 50mm Unmounted Clear Filter (UV-Blocked, No NIR Blocking)

    Astrodon - 50mm Unmounted Clear Filter (UV-Blocked, No NIR Blocking)

    Clear optical windows Pass all frequency of light to the detector.

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    (48 States)
    Model#: C2-50R
    $270.00

  8. Astrodon Tru-Balance E-Series 1.25" Mounted LRGB Filters

    Astrodon - 1.25" Mounted Gen2 E-Series LRGB Filters (set of 4)

    Astrodon Tru-Balance RGB filters have revolutionized CCD imaging. Their popularity is due to ease-of-use, high optical throughput and great resulting color for galaxies, star clusters and nebulae.

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    (48 States)
    Model#: LRGB2-E27R
    $475.00

  9. Astrodon - Tru-Balance E-Series - 1.25" Mounted CRGB Filter

    Astrodon - Tru-Balance E-Series - 1.25" Mounted CRGB Filter

    TRU-BALANCE FILTERSSIMPLIFY YOUR IMAGINGGreat Filters Just Got Better - Generation 2 Now Shipping!        Astrodon Tru-Balance RGB filters have revolutionized CCD imaging ... Learn More
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    (48 States)
    Model#: CRGB2-E27R
    $450.00

  10. Astrodon 1.25" Mounted Clear Filter (UV-Blocked, No NIR Blocking)

    Astrodon - 1.25" Mounted Clear Filter (UV-Blocked, No NIR Blocking)

    Clear optical windows Pass all frequency of light to the detector.

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    Model#: C2-27R
    $150.00

  11. Astrodon - 50mm Unmounted Gen2 E-Series LRGB Filters (set of 4)

    Astrodon - 50mm Unmounted Gen2 E-Series LRGB Filters (set of 4)

    Astrodon Tru-Balance RGB filters have revolutionized CCD imaging. Their popularity is due to ease-of-use, high optical throughput and great resulting color for galaxies, star clusters and nebulae.  There are two varieties of Tru-Balance filters - E-Series and I-Series.

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    FREE SHIPPING
    (48 States)
    Model#: LRGB2-E50R
    $950.00

  12. Astrodon - Tru-Balance E-Series - 50mm dia. CRGB Filter

    Astrodon - Tru-Balance E-Series - 50mm dia. CRGB Filter

    TRU-BALANCE FILTERSSIMPLIFY YOUR IMAGINGGreat Filters Just Got Better - Generation 2 Now Shipping!        Astrodon Tru-Balance RGB filters have revolutionized CCD imaging ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: CRGB2-E50R
    $875.00

  13. Astrodon Tru-Balance E-Series 50mm Square LRGB Filter

    Astrodon - 50mm Unmounted Gen2 E-Series LRGB Square Filters (set of 4)

    Astrodon Tru-Balance RGB filters have revolutionized CCD imaging. Their popularity is due to ease-of-use, high optical throughput and great resulting color for galaxies, star clusters and nebulae.  There are two varieties of Tru-Balance filters - E-Series and I-Series.

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    (48 States)
    Model#: LRGB2-E50S
    $1,225.00

  14. Astrodon - Tru-Balance E-Series - 50mm Square CRGB Filter

    Astrodon - Tru-Balance E-Series - 50mm Square CRGB Filter

    What really distinguishes E-Series Tru-Balance filters is their ability to regulate the transition of photons.

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    (48 States)
    Model#: CRGB2-E50S
    $1,150.00

  15. Astrodon 50mm Unmounted Clear Square Filter (UV-Blocked, No NIR Blocking)

    Astrodon - 50mm Unmounted Clear Square Filter (UV-Blocked, No NIR Blocking)

    Clear optical windows Pass all frequency of light to the detector.

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    (48 States)
    Model#: C2-50S
    $320.00

  16. Astrodon Narrowband - 1.25" Mounted H-a 5 nm Filter

    Astrodon - Narrowband - 1.25" Mounted H-Alpha 5 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, 501 nm), sulfur (SII, 672nm) and others.

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    (48 States)
    Model#: HA5-27R
    $330.00

  17. Astrodon - Narrowband - 1.25" Mounted OIII 5 nm Filter

    Astrodon - Narrowband - 1.25" Mounted OIII 5 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, 501 nm), sulfur (SII, 672nm) and others.

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    (48 States)
    Model#: OIII5-27R
    $330.00

  18. Astrodon - Narrowband - 1.25" Mounted SII 5 nm Filter

    Astrodon - Narrowband - 1.25" Mounted SII 5 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, 501 nm), sulfur (SII, 672nm) and others.

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    (48 States)
    Model#: SII5-27R
    $330.00

  19. Astrodon Photometric UVBRIc 50mm Unmounted Ic Edge Blackened Filter

    Astrodon - Photometric UVBRIc - Johnson-Cousins 50mm Unmounted Ic Edge Blackened Filter

    UVBRI filters have been the standard for photometric measurements for decades.  They have evolved over time as technology changed.  H. Johnson in the 1950s and A.W.J. Cousins in the 1970s designed these filters for photomultiplier tubes (PMT).

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    (48 States)
    Model#: Ic*-50R
    $400.00

  20. Astrodon UVenus 1.25" Mounted UV Filter

    Astrodon - UVenus - 1.25" Mounted UV Filter

    Astrodon introduces a breakthrough in UV filters for CCD imaging. A  durable, hard--coated UV filter of the highest quality having the best transmission available.

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    Model#: UVENUS-27R
    $190.00

Items 1 to 20 of 1197 total

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