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Imaging Filters

Items 1 - 25 of 429

Optolong OIII CCD 12nm Filter - 31mm Unmounted - OIIICCD12NM-31U

SKU: OTL-OIIICCD12NM-31U
  • Filter Type: OIII
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
$130.00 $99.95

ZWO 2" H-Alpha, SII, OIII 7nm Filter Set - NB7nmD2

SKU: ZWO-NB7NMD2
  • Filter Type: Narrowband Set
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$699.00

ZWO OIII 7nm 2" Filter - OIII7nmD2

SKU: ZWO-OIII7NMD2
  • Filter Type: OIII
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$249.00

ZWO SII 7nm 2" Filter - SII7nm2

SKU: ZWO-SII7NM2
  • Filter Type: SII
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$249.00

ZWO H-Alpha 7nm 2" Filter - Ha7nm2

SKU: ZWO-HA7NM2
  • Filter Type: H-alpha
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$249.00

ZWO LRGB 2" Filter Set - LRGB2

SKU: ZWO-LRGB2
  • Filter Type: RGB
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$299.00
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 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
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$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

ZWO 1.25" Duo-Band Filter - DB1.25

SKU: ZWO-DB1.25
  • Filter Type: Multi Narrow Bandpass
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
$99.00

ZWO 2" Duo-Band Filter - DB2

SKU: ZWO-DB2
  • Filter Type: Multi Narrow Bandpass
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
$179.00

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

Celestron Light Pollution Imaging Filter for 8 RASA - 93614 - Used

SKU: UEQ-12270-CEL-93614
  • Filter Type: CLS/LPR
  • Filter Size: 43 mm
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$219.95 $180.00

Lumicon Minus Violet 58mm Filter - LF3130

SKU: LUM-LF3130
  • Filter Type: Fringe-Killer/Minus Violet
  • Filter Size: 58 mm
  • Filter Shape: Round
  • Filter Insert Style: Threaded
$79.95

Orion LRGB Color Filter Set - 2" - 05567

SKU: ORI-05567
  • Filter Type: RGB
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$279.99
Baader 1.25" 35 nm H-Alpha Filter

Baader 35 nm Midband H-Alpha CCD Filter - 1.25" Mounted - FHAL-1

SKU: BAD-FHAL-1
  • Filter Type: H-Alpha
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
$109.00
Baader 2" Mounted 35 nm H-Alpha CCD Filter

Baader 35 nm Midband H-Alpha CCD Filter - 2" Mounted - FHAL-2

SKU: BAD-FHAL-2
  • Filter Type: H-Alpha
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$199.00
Baader Planetarium H-Alpha 7 nm Narrowband CCD Filter - 1.25"

Baader H-Alpha 7 nm Narrowband CCD Filter - 1.25" - FHALN-1

SKU: BAD-FHALN-1
  • Filter Type: H-Alpha
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$199.00
Baader Planetarium 2" H-alpha 7 nm Narrowband Filter

Baader H-Alpha 7 nm Narrowband CCD Filter - 2" Mounted - FHALN-2

SKU: BAD-FHALN-2
  • Filter Type: H-Alpha
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$309.00