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Astrodon

Items 1 - 25 of 123

Astrodon 3 nm H-Alpha Narrowband Filter - 49.7 mm Round Unmounted - HA3-50R

SKU: ASD-HA3-50R
  • Filter Type: H-Alpha
  • Filter Size: 50 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$1,145.00
 

Astrodon 3 nm H-Alpha Narrowband Filter - 36 mm Round Unmounted - HA3-36R

SKU: ASD-HA3-36R
  • Filter Type: H-Alpha
  • Filter Size: 36 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$748.00
 

Astrodon 3 nm NII Narrowband Filter - 36 mm Round - NII3-36MR

SKU: ASD-NII3-36MR
  • Filter Type: NII
  • Filter Size: 36 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$639.00
 
Astrodon OIII 3 nm Narrowband Filter - 36 mm Unthreaded Insert

Astrodon 3 nm OIII Narrowband Filter - 36 mm Round - OIII3-36R

SKU: ASD-OIII3-36R
  • Filter Type: OIII
  • Filter Size: 36 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$748.00
 

Astrodon 3 nm SII Narrowband Filter - 36 mm Round - SII3-36R

SKU: ASD-SII3-36R
  • Filter Type: SII
  • Filter Size: 36 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$748.00
 
Astrodon 36 mm Round H-Alpha 5 nm Narrowband Filter

Astrodon 5 nm H-Alpha Narrowband Filter - 36 mm Round - HA5-36R

SKU: ASD-HA5-36R
  • Filter Type: H-Alpha
  • Filter Size: 36 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$501.00
 
Astrodon 3 nm OIII Narrowband Filter - 50 mm Round

Astrodon 3 nm OIII Narrowband Filter - 49.7 mm Round Unmounted - OIII3-50R

SKU: ASD-OIII3-50R
  • Filter Type: OIII
  • Filter Size: 50 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$1,145.00
 
Astrodon 3 nm SII Narrowband 49.7 mm Round Filter

Astrodon 3 nm SII Narrowband Filter - 49.7 mm Round Unmounted - SII3-50R

SKU: ASD-SII3-50R
  • Filter Type: SII
  • Filter Size: 50 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$1,145.00
 
Astrodon 3 nm SII Narrowband 49.7 mm Round Filter

Astrodon 3 nm SII Narrowband Filter - 65 mm Square Unmounted - SII3-65S

SKU: ASD-SII3-65S
  • Filter Type: SII
  • Filter Size: 65 mm
  • Filter Shape: Square
  • Filter Insert Style: Drop-In
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$2,495.00
 

Astrodon 3 nm H-Alpha Narrowband Filter - 65 mm Square Unmounted - HA3-65S

SKU: ASD-HA3-65S
  • Filter Type: H-Alpha
  • Filter Size: 65 mm
  • Filter Shape: Square
  • Filter Insert Style: Drop-In
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$2,495.00
 

Astrodon 3 nm OIII Narrowband Filter - 65 mm Square Unmounted - OIII3-65S

SKU: ASD-OIII3-65S
  • Filter Type: OIII
  • Filter Size: 65 mm
  • Filter Shape: Square
  • Filter Insert Style: Drop-In
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$2,495.00
 

Astrodon 5 nm OIII Narrowband Filter - 36 mm Round Unmounted - OIII5-36R

SKU: ASD-OIII5-36R
  • Filter Type: OIII
  • Filter Size: 36 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
Free shipping Free shipping
$501.00
 

Astrodon 5 nm SII Narrowband Filter - 36 mm Round Unmounted - SII5-36R

SKU: ASD-SII5-36R
  • Filter Type: SII
  • Filter Size: 36 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$501.00
 
Astrodon Generation 2 E-Series 1.25" Threaded Cell Tru-Balance LRGB Filter Set

Astrodon Gen2 E-Series LRGB Tru-Balance Filter Set - 1.25" Threaded Cell - LRGB2-E27R

SKU: ASD-LRGB2-E27R
  • Filter Type: RGB
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$547.00
 
Astrodon Generation 2 E-Series Tru-Balance LRGB Filter Set - 31 mm Unthreaded Insert

Astrodon Gen2 E-Series LRGB Tru-Balance Filter Set - 31 mm Unthreaded Insert - LRGB2-E31R

SKU: ASD-LRGB2-E31R
  • Filter Type: RGB
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$615.00
 
Astrodon UVenus UV Imaging Filter

Astrodon UVenus UV Imaging Filter - 1.25" Threaded Cell - UVENUS-27R

SKU: ASD-UVENUS-27R
  • Filter Type: Fringe-Killer/Minus Violet
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$209.00
 

Astrodon Luminance Gen2 UV/NIR Blocking Filter - 1.25" Threaded Cell - L2-27R

SKU: ASD-L2-27R
  • Filter Type: UV/IR/Luminance
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$184.00
 

Astrodon Clear Filter with UV-Blocking Only - 1.25" Threaded Cell - C2-27R

SKU: ASD-C2-27R
  • Filter Type: Clear
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$173.00
 

Astrodon 5 nm H-Alpha Narrowband Filter - 1.25" Threaded Cell - HA5-27R

SKU: ASD-HA5-27R
  • Filter Type: H-Alpha
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$380.00
 

Astrodon 3 nm H-Alpha Narrowband Filter - 1.25" Threaded Cell - HA3-27R

SKU: ASD-HA3-27R
  • Filter Type: H-Alpha
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$564.00
 
Astrodon Narrowband Filters

Astrodon 5 nm OIII Narrowband Filter - 1.25" Threaded Cell - OIII5-27R

SKU: ASD-OIII5-27R
  • Filter Type: OIII
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
Free shipping Free shipping
$380.00
 
Astrodon Narrowband Filters

Astrodon 3 nm OIII Narrowband Filter - 1.25" Threaded Cell - OIII3-27R

SKU: ASD-OIII3-27R
  • Filter Type: OIII
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
Free shipping Free shipping
$564.00
 
5 nm SII Narrowband Filter - 1.25" Threaded Cell

Astrodon 5 nm SII Narrowband Filter - 1.25" Threaded Cell - SII5-27R

SKU: ASD-SII5-27R
  • Filter Type: SII
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
Free shipping Free shipping
$380.00
 
Astrodon Narrowband Filters

Astrodon 3 nm SII Narrowband Filter - 1.25" Threaded Cell - SII3-27R

SKU: ASD-SII3-27R
  • Filter Type: SII
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
Free shipping Free shipping
$564.00
 
Astrodon Narrowband Filters

Astrodon 3 nm NII Narrowband Filter - 49.7 mm Round Unmounted - NII3-50R

SKU: ASD-NII3-50R
  • Filter Type: NII
  • Filter Size: 50 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
Free shipping Free shipping
$1,145.00
 

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