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Astrodon

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  • Astrodon Narrowband Filters
    Astrodon Astrodon 5 nm H-Alpha Narrowband Filter - 49.7 mm Square Unmounted - HA5-50S
    $1,024.00
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  • Astrodon Narrowband Filters
    Astrodon Astrodon 5 nm SII Narrowband Filter - 49.7 mm Square Unmounted - SII5-50S
    $1,024.00
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  • Astrodon 49.7 mm Round Unmounted Clear Filter with UV Blocking Only (No NIR Blocking)
    Astrodon Astrodon Clear Filter with UV-Blocking Only - 49.7 mm Square Unmounted - C2-50S
    $368.00
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  • Astrodon Narrowband Filters
    Astrodon Astrodon 5 nm OIII Narrowband Filter - 49.7 mm Square Unmounted - OIII5-50S
    $1,024.00
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  • Astrodon Narrowband Filters
    Astrodon Astrodon 5 nm Red Continuum Narrowband Filter - 49.7 mm Square Unmounted - REDCON5-50S
    $1,024.00
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  • Astrodon Narrowband Filters
    Astrodon Astrodon 3 nm NII Narrowband Filter - 49.7 mm Square Unmounted - NII3-50S
    $1,438.00
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  • Astrodon Narrowband Filters
    Astrodon Astrodon 3 nm H-Alpha Narrowband Filter - 49.7 mm Square Unmounted - HA3-50S
    $1,438.00
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  • Astrodon Narrowband Filters
    Astrodon Astrodon 3 nm SII Narrowband Filter - 49.7 mm Square Unmounted - SII3-50S
    $1,438.00
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  • Astrodon Narrowband Filters
    Astrodon Astrodon 3 nm OIII Narrowband Filter - 49.7 mm Square Unmounted - OIII3-50S
    $1,438.00
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  • Astrodon Johnson-Cousins UVBRI Photometric Filters
    Astrodon Astrodon Photometric Johnson-Cousins UV Filter - 49.7 mm Square Unmounted - UV-50S
    $550.00
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  • Astrodon Johnson-Cousins UVBRI Photometric Filters
    Astrodon Astrodon Photometric Johnson-Cousins B Filter - 49.7 mm Square Unmounted - B-50S
    $550.00
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  • Astrodon Johnson-Cousins UVBRI Photometric Filters
    Astrodon Astrodon Photometric Johnson-Cousins V Filter - 49.7 mm Square Unmounted - V-50S
    $550.00
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  • Astrodon Johnson-Cousins UVBRI Photometric Filters
    Astrodon Astrodon Photometric Johnson-Cousins Rc Filter - 49.7 mm Square Unmounted - RC-50S
    $550.00
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  • Astrodon Johnson-Cousins UVBRI Photometric Filters
    Astrodon Astrodon Photometric Johnson-Cousins Ic Filter - 49.7 mm Square Unmounted - IC-50S
    $550.00
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  • Astrodon 50 mm Round Unmounted Luminance Gen2 UV/NIR Block Filter
    Astrodon Astrodon Luminance Gen2 UV/NIR Blocking Filter - 49.7 mm Square Unmounted - L2-50S
    $403.00
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  • Astrodon Astrodon Gen2 E-Series LRGB Tru-Balance Filter Set - 49.7 mm Square Unmounted - LRGB2-E50S
    $1,421.00
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  • Astrodon Square Unmounted Sloan Generation 2 Edge-Blackened U Filter - 49.7 mm x 49.7 mm
    Astrodon Astrodon Photometric Sloan Gen2 U Filter - 320/385 nm - 49.7 mm Square Unmounted - U2-50S
    $550.00
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  • Astrodon 49.7 mm Square Unmounted Edge-Blackened Photometric Sloan Gen2 G Filter
    Astrodon Astrodon Photometric Sloan Gen2 G Filter - 401/550 nm - 49.7 mm Square Unmounted - G2-50S
    $550.00
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  • Astrodon Edge-Blackened 49.7 mm Square Unmounted Photometric Sloan Generation 2 R Filter
    Astrodon Astrodon Photometric Sloan Gen2 R Filter - 562/695 nm - 49.7 mm Square Unmounted - R2-50S
    $550.00
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  • Astrodon Edge-Blackened Photometric Sloan Gen2 I Filter - 49.7 x 49.7 mm Unmounted
    Astrodon Astrodon Photometric Sloan Gen2 I Filter - 695/844 nm - 49.7 mm Square Unmounted - I2-50S
    $550.00
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  • Astrodon 49.7 mm Square Unmounted Sloan Generation 2 Photometric Y Filter - Edge-Blackened
    Astrodon Astrodon Photometrics Sloan Gen2 Y Filter - 950/1058 nm - 49.7 mm Square Unmounted - Y2-50S
    $550.00
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  • Astrodon 49.7 mm x 49.7 mm Unmounted Sloan Gen2 Edge-Blackened Z Filter
    Astrodon Astrodon Photometrics Sloan Gen2 Z Filter - >826 nm - 49.7 mm Square Unmounted - Z2-50S
    $550.00
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  • Astrodon 49.7 mm Square Unmounted Edge-Blackened Sloan Gen2 Z-S Filter
    Astrodon Astrodon Photometrics Sloan Gen2 Z-S Filter - 826/920 nm - 49.7 mm Square Unmounted - Z-S2-50S
    $550.00
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Founded in 2003 by Don Goldman, Astrodon was initially formed in order to distribute his innovative color-balanced RGB filters. These "Tru-Balance" filters would soon be joined by the introduction of maximum performance narrowband filters, as well as the MonsterMOAG Off-Axis Guider. Next, Astrodon acquired Schuler Astro-Imaging UVBRI photometric filters to enter the research market. Prior to being acquired by Astrodon, these filters were constructed of three different colored glasses fused together. Don improved on the design by building the UBVRI filters in the same fashion as all filters made by Astrodon, with a single high quality 3 mm thick fused silica substrate fully coated with hard oxide sputtered coatings. Finally, Astrodon added Sloan (SDSS) filters, featuring the highest throughputs and amazing durability for use during extended research projects.


Astrodon was acquired by Optical Structures (known by most amateur astronomers as FarPoint) in 2018 but all specifications on all Astrodon filters will remain at the same high standards. With Astrodon, you can count on receiving the most durable, high performance, user-friendly filters available anywhere.

High Point Scientific is rated 4.9/5 based on 1347 reviews

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