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Filters

24 Items
Astrodon 50 mm Round Unmounted Edge-Blackened Photometric Sloan Gen2 U Filter

Astrodon Photometric Sloan Gen2 U Filter - 320/385 nm - 49.7 mm Round Unmounted - U2-50R

SKU: ASD-U2-50R
  • Filter Type: Photometric (UBVIR, Johnson-Cousins)
  • Filter Size: 50 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$500.00
Astrodon Edge-Blackened Sloan Generation 2 G Filter - 49.7 mm Round Unmounted

Astrodon Photometric Sloan Gen2 G Filter - 401/550 nm - 49.7 mm Round Unmounted - G2-50R

SKU: ASD-G2-50R
  • Filter Type: Photometric (UBVIR, Johnson-Cousins)
  • Filter Size: 50 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$500.00
Astrodon 49.7 mm Round Unmounted Generation 2 Edge-Blackened Sloan R Filter

Astrodon Photometric Sloan Gen2 R Filter - 562/695 nm - 49.7 mm Round Unmounted - R2-50R

SKU: ASD-R2-50R
  • Filter Type: Photometric (UBVIR, Johnson-Cousins)
  • Filter Size: 50 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$500.00
Astrodon Photometric Sloan Generation 2 I Filter - 49.7 mm Round Unmounted

Astrodon Photometric Sloan Gen2 I Filter - 695/844 nm - 49.7 mm Round Unmounted - I2-50R

SKU: ASD-I2-50R
  • Filter Type: Photometric (UBVIR, Johnson-Cousins)
  • Filter Size: 50 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$500.00
Astrodon 49.7 mm Edge-Blackened Photometrics Sloan Gen2 Y Filter - Round, Unmounted

Astrodon Photometrics Sloan Gen2 Y Filter - 950/1058 nm - 49.7 mm Round Unmounted - Y2-50R

SKU: ASD-Y2-50R
  • Filter Type: Photometric (UBVIR, Johnson-Cousins)
  • Filter Size: 50 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$500.00
Astrodon Edge-Blackened Sloan Gen2 Z Filter - 49.7 mm Round Unmounted

Astrodon Photometrics Sloan Gen2 Z Filter - >826 nm - 49.7 mm Round Unmounted - Z2-50R

SKU: ASD-Z2-50R
  • Filter Type: Photometric (UBVIR, Johnson-Cousins)
  • Filter Size: 50 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$500.00
Astrodon 49.7 mm Round Unmounted Edge-Blackened Sloan Gen2 Z-S Filter

Astrodon Photometrics Sloan Gen2 Z-S Filter - 826/920 nm - 49.7 mm Round Unmounted - Z-S2-50R

SKU: ASD-Z-S2-50R
  • Filter Type: Photometric (UBVIR, Johnson-Cousins)
  • Filter Size: 50 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
Free shipping Free shipping
$500.00
Astrodon Square Unmounted Sloan Generation 2 Edge-Blackened U Filter - 49.7 mm x 49.7 mm

Astrodon Photometric Sloan Gen2 U Filter - 320/385 nm - 49.7 mm Square Unmounted - U2-50S

SKU: ASD-U2-50S
  • Filter Type: Photometric (UBVIR, Johnson-Cousins)
  • Filter Size: 50 mm
  • Filter Shape: Square
  • Filter Insert Style: Drop-In
Free shipping Free shipping
$550.00
Astrodon 49.7 mm Square Unmounted Edge-Blackened Photometric Sloan Gen2 G Filter

Astrodon Photometric Sloan Gen2 G Filter - 401/550 nm - 49.7 mm Square Unmounted - G2-50S

SKU: ASD-G2-50S
  • Filter Type: Photometric (UBVIR, Johnson-Cousins)
  • Filter Size: 50 mm
  • Filter Shape: Square
  • Filter Insert Style: Drop-In
Free shipping Free shipping
$550.00
Astrodon Edge-Blackened 49.7 mm Square Unmounted Photometric Sloan Generation 2 R Filter

Astrodon Photometric Sloan Gen2 R Filter - 562/695 nm - 49.7 mm Square Unmounted - R2-50S

SKU: ASD-R2-50S
  • Filter Type: Photometric (UBVIR, Johnson-Cousins)
  • Filter Size: 50 mm
  • Filter Shape: Square
  • Filter Insert Style: Drop-In
Free shipping Free shipping
$550.00
Astrodon Edge-Blackened Photometric Sloan Gen2 I Filter - 49.7 x 49.7 mm Unmounted

Astrodon Photometric Sloan Gen2 I Filter - 695/844 nm - 49.7 mm Square Unmounted - I2-50S

SKU: ASD-I2-50S
  • Filter Type: Photometric (UBVIR, Johnson-Cousins)
  • Filter Size: 50 mm
  • Filter Shape: Square
  • Filter Insert Style: Drop-In
Free shipping Free shipping
$550.00
Astrodon 49.7 mm Square Unmounted Sloan Generation 2 Photometric Y Filter - Edge-Blackened

Astrodon Photometrics Sloan Gen2 Y Filter - 950/1058 nm - 49.7 mm Square Unmounted - Y2-50S

SKU: ASD-Y2-50S
  • Filter Type: Photometric (UBVIR, Johnson-Cousins)
  • Filter Size: 50 mm
  • Filter Shape: Square
  • Filter Insert Style: Drop-In
Free shipping Free shipping
$550.00
Astrodon 49.7 mm x 49.7 mm Unmounted Sloan Gen2 Edge-Blackened Z Filter

Astrodon Photometrics Sloan Gen2 Z Filter - >826 nm - 49.7 mm Square Unmounted - Z2-50S

SKU: ASD-Z2-50S
  • Filter Type: Photometric (UBVIR, Johnson-Cousins)
  • Filter Size: 50 mm
  • Filter Shape: Square
  • Filter Insert Style: Drop-In
Free shipping Free shipping
$550.00
Astrodon 49.7 mm Square Unmounted Edge-Blackened Sloan Gen2 Z-S Filter

Astrodon Photometrics Sloan Gen2 Z-S Filter - 826/920 nm - 49.7 mm Square Unmounted - Z-S2-50S

SKU: ASD-Z-S2-50S
  • Filter Type: Photometric (UBVIR, Johnson-Cousins)
  • Filter Size: 50 mm
  • Filter Shape: Square
  • Filter Insert Style: Drop-In
Free shipping Free shipping
$550.00
Astrodon Johnson-Cousins UVBRI Photometric Filters

Astrodon Photometric Johnson-Cousins UV Filter - 49.7 mm Round Unmounted - UV-50R

SKU: ASD-UV-50R
  • Filter Type: Photometric (UBVIR, Johnson-Cousins)
  • Filter Size: 50 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
Free shipping Free shipping
$500.00
Astrodon Johnson-Cousins UVBRI Photometric Filters

Astrodon Photometric Johnson-Cousins B Filter - 49.7 mm Round Unmounted - B-50R

SKU: ASD-B-50R
  • Filter Type: Photometric (UBVIR, Johnson-Cousins)
  • Filter Size: 50 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
Free shipping Free shipping
$500.00
Astrodon Johnson-Cousins UVBRI Photometric Filters

Astrodon Photometric Johnson-Cousins V Filter - 49.7 mm Round Unmounted - V-50R

SKU: ASD-V-50R
  • Filter Type: Photometric (UBVIR, Johnson-Cousins)
  • Filter Size: 50 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
Free shipping Free shipping
$500.00
Astrodon Johnson-Cousins UVBRI Photometric Filters

Astrodon Photometric Johnson-Cousins Rc Filter - 49.7 mm Round Unmounted - RC-50R

SKU: ASD-RC-50R
  • Filter Type: Photometric (UBVIR, Johnson-Cousins)
  • Filter Size: 50 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
Free shipping Free shipping
$500.00
Astrodon Johnson-Cousins UVBRI Photometric Filters

Astrodon Photometric Johnson-Cousins Ic Filter - 49.7 mm Round Unmounted - IC-50R

SKU: ASD-IC-50R
  • Filter Type: Photometric (UBVIR, Johnson-Cousins)
  • Filter Size: 50 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
Free shipping Free shipping
$500.00
Astrodon Johnson-Cousins UVBRI Photometric Filters

Astrodon Photometric Johnson-Cousins UV Filter - 49.7 mm Square Unmounted - UV-50S

SKU: ASD-UV-50S
  • Filter Type: Photometric (UBVIR, Johnson-Cousins)
  • Filter Size: 50 mm
  • Filter Shape: Square
  • Filter Insert Style: Drop-In
Free shipping Free shipping
$550.00
Astrodon Johnson-Cousins UVBRI Photometric Filters

Astrodon Photometric Johnson-Cousins B Filter - 49.7 mm Square Unmounted - B-50S

SKU: ASD-B-50S
  • Filter Type: Photometric (UBVIR, Johnson-Cousins)
  • Filter Size: 50 mm
  • Filter Shape: Square
  • Filter Insert Style: Drop-In
Free shipping Free shipping
$550.00
Astrodon Johnson-Cousins UVBRI Photometric Filters

Astrodon Photometric Johnson-Cousins V Filter - 49.7 mm Square Unmounted - V-50S

SKU: ASD-V-50S
  • Filter Type: Photometric (UBVIR, Johnson-Cousins)
  • Filter Size: 50 mm
  • Filter Shape: Square
  • Filter Insert Style: Drop-In
Free shipping Free shipping
$550.00
Astrodon Johnson-Cousins UVBRI Photometric Filters

Astrodon Photometric Johnson-Cousins Rc Filter - 49.7 mm Square Unmounted - RC-50S

SKU: ASD-RC-50S
  • Filter Type: Photometric (UBVIR, Johnson-Cousins)
  • Filter Size: 50 mm
  • Filter Shape: Square
  • Filter Insert Style: Drop-In
Free shipping Free shipping
$550.00
Astrodon Johnson-Cousins UVBRI Photometric Filters

Astrodon Photometric Johnson-Cousins Ic Filter - 49.7 mm Square Unmounted - IC-50S

SKU: ASD-IC-50S
  • Filter Type: Photometric (UBVIR, Johnson-Cousins)
  • Filter Size: 50 mm
  • Filter Shape: Square
  • Filter Insert Style: Drop-In
Free shipping Free shipping
$550.00

One of the most crucial accessories of astro-imaging is filters. Eyepiece filters are an invaluable aid in lunar and planetary observing. They reduce glare and light scattering, increase contrast through selective filtration, increase definition and resolution, reduce irradiation and lessen eye fatigue. Different filters will act differently, highlighting a rainbow of wavelengths to enhance a variety of features in the night sky.


Deep-space imaging in particular benefits from filters. Far away celestial objects, such as nebulae come to life in your photos with vivid colors. We recommend starting out with an h-alpha filter to filter out broadband light pollution while only allowing a very narrow bandwidth of light to pass through. These are a favorite filter among astrophotographers!


We offer deep sky filters and planetary filters from Lumicon, Baader Planetarium, Celestron, TeleVue, Meade, Orion, High Point & Thousand Oaks. Telescope filters will add to the performance of virtually any telescope and are a highly recommended telescope accessory. Feel free to contact one of our telescope experts for advice on selecting the filter assortment that is right for you.

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