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50mm Filters

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  1. Astrodon - Gen2 E-Series LRGB Set - 50mm Square Unmounted Set

    Astrodon - Gen2 E-Series LRGB Set - 50mm Square Unmounted Set

    Astrodon 50mm Gen2 LRGB Square E-series filters are the pinnacle of high performance CCD filters. The E-Series Gen2 filters were designed for cameras containing the full-frame KAF8300, KAF3200, KAF6303, KAF16200, KAF16803 sensors, as well as most Sony and back-thinned sensors. ... Learn More
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    (48 States)
    Model#: LRGB2-E50S
    $1,225.00

  2. Astrodon - Photometric UVBRIc - 50mm Unmounted Johnson/Cousins UV Edge Blackened Filter

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

    UVBRI filters have been the standard for photometric measurements for decades.  They have evolved over time as technology changed.

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

  3. Astrodon Photometric UVBRIc - 50x50mm Square Unmounted Johnson/Cousins UV Edge Blackened Filter

    Astrodon - Photometric UVBRIc - 50x50mm Square Unmounted Johnson/Cousins UV Edge Blackened Filter

    UVBRI filters have been the standard for photometric measurements for decades.  They have evolved over time as technology changed.

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    (48 States)
    Model#: UV-50S
    $440.00

  4. Astrodon - Photometric UBVRIc - 50mm Unmounted Johnson/Cousins B Edge Blackened Filter

    Astrodon - Photometric UBVRIc - 50mm Unmounted Johnson/Cousins B Edge Blackened Filter

    UVBRI filters have been the standard for photometric measurements for decades.  They have evolved over time as technology changed.

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

  5. Astrodon - Photometric UBVRIc - 50mm Unmounted Square Johnson/Cousins B Edge Blackened Filter

    Astrodon - Photometric UBVRIc - 50mm Unmounted Square Johnson/Cousins B Edge Blackened Filter

    UVBRI filters have been the standard for photometric measurements for decades.  They have evolved over time as technology changed.

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    (48 States)
    Model#: B-50S
    $440.00

  6. Astrodon - Photometric UBVRIc - 50mm Unmounted Johnson/Cousins V Edge Blackened Filter

    Astrodon - Photometric UBVRIc - 50mm Unmounted Johnson/Cousins V Edge Blackened Filter

    UVBRI filters have been the standard for photometric measurements for decades.  They have evolved over time as technology changed.

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

  7. Astrodon - Photometric UBVRIc - 50mm Unmounted Square Johnson/Cousins V Edge Blackened Filter

    Astrodon - Photometric UBVRIc - 50mm Unmounted Square Johnson/Cousins V Edge Blackened Filter

    UVBRI filters have been the standard for photometric measurements for decades.  They have evolved over time as technology changed.

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    (48 States)
    Model#: V-50S
    $440.00

  8. Astrodon 1.25" dia. Unmounted R Filter

    Astrodon - Photometric UVBRIc - 50mm Unmounted Johnson-Cousins 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

  9. Astrodon 1.25" dia. Unmounted R Filter

    Astrodon - Photometric UVBRIc - 50mm Unmounted Square Johnson-Cousins 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-50S
    $440.00

  10. Astrodon NIR Tricolor - 50mm NIRL Luminance Round Unmounted Filter

    Astrodon - NIR Tricolor - 50mm NIRL Luminance Round Unmounted Filter

    Astrodon's NIR filters allow you to explore the largely unvisited region of near-IR light found in many nebulae and galaxies. This Astrodon NIR filter is 50mm round and unmounted to fit in your 50mm filter wheel.

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    (48 States)
    Model#: NIRL-50R
    $335.00

  11. Astrodon Narrowband 50mm Unmounted Red Continuum 5nm Filter

    Astrodon - Narrowband - 50mm Unmounted Red Continuum 5nm 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#: RedCon5-50R
    $725.00

  12. Astrodon Narrowband 50mm Unmounted Red Continuum 5nm Filter

    Astrodon - Narrowband - 50x50mm Unmounted Red Continuum 5nm 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, 501 nm), sulfur (SII, 672nm) and others.

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    Model#: REDCON5-50S
    $875.00

  13. Astrodon 50mm UVenus Unmounted Filter

    Astrodon - 50mm UVenus Unmounted 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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    (48 States)
    Model#: UVENUS-50R
    $385.00

  14. Astrodon Narrowband 50mm Unmounted NII 3 nm Filter

    Astrodon - Narrowband - 50mm Unmounted NII 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),

    ...
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    (48 States)
    Model#: NII3-50R
    $995.00

  15. Astrodon 50mm Unmounted Clear UV Blocking (No NIR Blocking) Filter

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

    UV-Blocked Clear filters with 395 nm cut-on and 97%T to 1000 nm often purchased with Astrodon photometric filters.

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

  16. Astrodon 50mm Unmounted Clear UV Blocking (No NIR Blocking) Filter

    Astrodon - 50x50mm Unmounted Clear UV Blocking (No NIR Blocking) Square Filter

    UV-Blocked Clear filters with 395 nm cut-on and 97%T to 1000 nm often purchased with Astrodon photometric filters.

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

  17. FLI - Research Grade 5nm H-Alpha Filter - 50mm Round Unmounted

    FLI - Research Grade 5nm H-Alpha Filter - 50mm Round Unmounted

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

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    (48 States)
    Model#: RG-50D-Ha-5nm

    Regular Price: $725.00

    Special Price: $688.75

  18. FLI - Research Grade - 50mm Diameter SII 5nm

    FLI - Research Grade - 50mm Diameter SII 5nm

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

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    (48 States)
    Model#: RG-50D-SII-5nm

    Regular Price: $725.00

    Special Price: $688.75

  19. FLI - Research Grade - 50mm Diameter OIII 5nm

    FLI - Research Grade - 50mm Diameter OIII 5nm

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

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    (48 States)
    Model#: RG-50D-OIII-5nm

    Regular Price: $725.00

    Special Price: $688.75

  20. FLI - Research Grade - 50mm Diameter SII 8nm

    FLI - Research Grade - 50mm Diameter SII 8nm

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

    ...
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    (48 States)
    Model#: RG-50D-SII-8nm

    Regular Price: $495.00

    Special Price: $470.25

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