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1.25" Filters

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  1. Astrodon - 1.25" H-Alpha 5nm Narrowband Filter - Mounted

    Astrodon - 1.25" H-Alpha 5nm Narrowband Filter - Mounted

    Bring out the faint structures In nebulae with the Astrodon H-Alpha Narrowband 1.25" 5nm filter. ... Learn More
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    (48 States)
    Model#: HA5-27R

    In Stock

    $330.00

  2. Astrodon 1.25" Mounted Clear UV Blocking (No NIR Blocking) Filter

    Astrodon - 1.25" Mounted 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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    Model#: C2-27R

    Available

    $150.00

  3. Astrodon 1.25" Mounted Exo-Planet (Clear with Blue-Blocking)

    Astrodon - 1.25" Mounted Exo-Planet (Clear with Blue-Blocking) Filter

    Astrodon introduces the ExoPlanet-BB filter for use in amateur-scale telescopes to measure light curves of exoplanets.

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    Model#: XOPBB-27R

    In Stock

    $185.00

  4. Astrodon 1.25" UVenus Mounted Filter

    Astrodon - 1.25" UVenus Mounted 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

    In Stock

    $190.00

  5. Astrodon - Gen2 E-Series LRGB Set - 1.25" Mounted Set

    Astrodon - Gen2 E-Series LRGB Set - 1.25" Mounted Set

    Astrodon 31mm Gen2 LRGB 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-E27R

    In Stock

    $475.00

  6. Astrodon Mounted LRGB Gen2 I-Series 1.25" Filter Set

    Astrodon - Mounted LRGB Gen2 I-Series 1.25" Filter Set

    I-Series filters are designed to approximately equalize the flux of  Interline CCD detectors (formerly Kodak), including compensation for the solar photon flux.

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    (48 States)
    Model#: LRGB2-I27R

    In Stock

    $475.00

  7. Astrodon - Narrowband - 1.25" Mounted H-Alpha 3 nm Filter

    Astrodon - Narrowband - 1.25" Mounted H-Alpha 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#: HA3-27R

    Available

    $490.00

  8. Astrodon Narrowband 50mm Unmounted NII 3 nm Filter

    Astrodon - Narrowband - 1.25" Mounted 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#: NII3-27R

    Available

    $490.00

  9. Astrodon - Narrowband - 1.25" Mounted Red Continuum 5nm Filter

    Astrodon - Narrowband - 1.25" Mounted 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#: RedCon5-27R

    Available

    $330.00

  10. Astrodon Narrowband 1.25" Mounted SII 5 nm Filter

    Astrodon - Narrowband - 1.25" Mounted SII 5 nm Filter

    ... Learn More
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    (48 States)
    Model#: SII5-27R

    Available

    $330.00

  11. Astrodon - NIR Tricolor - 1.25" NIRL Luminance Round Mounted Filter

    Astrodon - NIR Tricolor - 1.25" NIRL Luminance Round Mounted 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 1.25" round and mounted to fit in your 1.25" filter wheel. Bring out details you have never known existed! NIR filters are a great addition to a traditional narrowband filter set. ... Learn More
    Model#: NIRL-27R

    Available

    $195.00

  12. Astrodon - Photometric Sloan - 1.25" Gen 2 Mounted Y Filter

    Astrodon - Photometric Sloan - 1.25" Gen 2 Mounted Y Filter

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

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    Model#: Y2-27R

    Available

    $200.00

  13. 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

    In Stock

    $200.00

  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

    Available

    $200.00

  15. 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

    In Stock

    $200.00

  16. Astrodon Photometric Sloan 1.25" Mounted Gen2 u' Edge-Blackened Filter

    Astrodon - Photometric Sloan - 1.25" Mounted Gen2 u' 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#: U'2-27R

    Available

    $200.00

  17. Astrodon - Photometric Sloan - 1.25" Mounted Gen2 z' Edge Blackened Filter

    Astrodon - Photometric Sloan - 1.25" Mounted Gen2 z' 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#: Z'2-27R

    In Stock

    $200.00

  18. Astrodon - Photometric Sloan - 1.25" Mounted Gen2 z_s Edge Blackened Filter

    Astrodon - Photometric Sloan - 1.25" Mounted Gen2 z_s 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#: z-s2-27R

    Available

    $200.00

  19. Astrodon - Photometric UBVRIc - 1.25" Mounted Johnson/Cousins B Edge Blackened Filter

    Astrodon - Photometric UBVRIc - 1.25" Mounted 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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    Model#: B-27R

    In Stock

    $200.00

  20. Astrodon - Photometric UBVRIc - 1.25" Mounted Johnson/Cousins V Edge Blackened Filter

    Astrodon - Photometric UBVRIc - 1.25" Mounted 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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    Model#: V-27R

    Available

    $200.00

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