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Deep Sky Filters

Items 1 - 25 of 121

Lumicon 1.25" Night Sky Hydrogen - Alpha (Ha) Filter - LF3085

SKU: LUM-LF3085
  • Filter Type: H-Alpha
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$55.00
 

Lumicon 82 mm Night Sky Hydrogen - Alpha (Ha) Filter - LF3115

SKU: LUM-LF3115
  • Filter Type: H-Alpha
  • Filter Size: 82 mm
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$450.00
 
Baader Planetarium 1.25" Visual OIII Nebula Filter

Baader Visual OIII Nebula Filter - 1.25" - FOIII-1

SKU: BAD-FOIII-1
  • Filter Type: OIII
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
$109.00
 
Baader Planetarium 2" Visual OIII Nebula Filter

Baader Visual OIII Nebula Filter - 2" - FOIII-2

SKU: BAD-FOIII-2
  • Filter Type: OIII
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
$189.00
 
Baader UHC-S Nebula Filter with L Booster - 1.25"

Baader UHC-S Nebula Filter - L Booster - 1.25" Mounted - FUHC-1

SKU: BAD-FUHC-1
  • Filter Type: UHC
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
$89.00
 
Baader 2" UHC-S L Booster Filter

Baader UHC-S Nebula Filter - L Booster - 2" - FUHC-2

SKU: BAD-FUHC-2
  • Filter Type: UHC
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
$147.00
 
Baader Planetarium SII 8 nm Narrowband CCD Filter - 1.25" Mounted

Baader S-II 8 nm Narrowband CCD Filter - 1.25" Mounted - FSIIN-1

SKU: BAD-FSIIN-1
  • Filter Type: SII
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
$149.00
 
Explore Scientific 1.25" OIII Nebula Filter with Case

Explore Scientific 1.25" OIII Nebula Filter - 310205

SKU: EXS-310205
  • Filter Type: OIII
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
$99.99 $71.99
 
Explore Scientific 2" OIII Nebula Filter with Case

Explore Scientific 2" OIII Nebula Filter - 310200

SKU: EXS-310200
  • Filter Type: OIII
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
$129.99
 
Astronomik 1.25" ProPlanet IR 742 Filter

Astronomik ProPlanet 742 IR Pass Filter - 1.25" - P742-1

SKU: ASF-P742-1
  • Filter Type: Pro Planet
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$49.95
 
Astronomik ProPlanet 742 IR-Pass Filter - 2" Round Mounted

Astronomik ProPlanet IR - 742 Filter - 2" Round Mounted - P742-2

SKU: ASF-P742-2
  • Filter Type: Pro Planet
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$99.95
 
Astronomik 12 nm SII CCD Filter - 1.25" Round Mounted

Astronomik SII 12 nm CCD Filter - 1.25" - SII-1

SKU: ASF-SII-1
  • Filter Type: SII
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$129.95
 
Astronomik 2" Round Mounted SII CCD Filter - 12 nm

Astronomik SII 12 nm CCD Filter - 2" - SII-2

SKU: ASF-SII-2
  • Filter Type: SII
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$289.95
 
Astronomik 1.25" Round Mounted H-Alpha 12 nm CCD Filter

Astronomik H-Alpha 12 nm CCD Filter - 1.25" Round Mounted - HA12-1

SKU: ASF-HA12-1
  • Filter Type: H-Alpha
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$129.95
 
Astronomik 2" Round Mounted H-Alpha 12 nm CCD Filter

Astronomik H-Alpha 12 nm CCD Filter - 2" Round Mounted - HA12-2

SKU: ASF-HA12-2
  • Filter Type: H-Alpha
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$289.95
 
Astronomik H-Alpha 12 nm EOS Clip Filter

Astronomik H-Alpha 12 nm EOS Clip Filter - HA12-EOS

SKU: ASF-HA12-EOS
  • Filter Type: H-Alpha
  • Filter Size: EOS APS Clip
  • Filter Shape: Round
  • Filter Insert Style: Clip-In
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$189.95
 
Astronomik 1.25" Round Mounted OIII Visual Filter

Astronomik OIII Visual Filter - 1.25" Round Mounted - OIII-1

SKU: ASF-OIII-1
  • Filter Type: OIII
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$109.95
 
Astronomik OIII 12 nm CCD Filter - 2" Round Mounted

Astronomik OIII 12 nm CCD Filter - 2" Round Mounted - OIIICCD-2

SKU: ASF-OIIICCD-2
  • Filter Type: OIII
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$289.95
 
Astronomik 2" Round Mounted OIII Visual Filter

Astronomik OIII Visual Filter - 2" Round Mounted - OIII-2

SKU: ASF-OIII-2
  • Filter Type: OIII
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$219.95
 
Astronomik OIII 12 nm CCD Filter - 1.25" Round Mounted

Astronomik OIII 12 nm CCD Filter - 1.25" Round Mounted - OIIICCD-1

SKU: ASF-OIIICCD-1
  • Filter Type: OIII
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$129.95
 

Optolong UHC Filter - 2" Mounted - UHC-200

SKU: OTL-UHC-200
  • Filter Type: UHC
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$85.00
 

Optolong OIII 25nm Filter - 1.25" Mounted - OIII-125

SKU: OTL-OIII-125
  • Filter Type: OIII
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$78.00
 

Optolong 25nm OIII Filter - 2" Mounted - OIII-200

SKU: OTL-OIII-200
  • Filter Type: OIII
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$108.00
 
Baader 50.4 mm Round Unmounted UHC-S L Booster Filter

Baader UHC-S Nebula Filter - L Booster - 50.4 mm Round Unmounted - FUHC-RD50

SKU: BAD-FUHC-RD50
  • Filter Type: UHC
  • Filter Size: 50.4 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$184.00
 
Astronomik 31 mm Round H-Alpha 12 nm CCD Filter

Astronomik H-Alpha 12 nm CCD Filter - 31 mm Round - HA12-31

SKU: ASF-HA12-31
  • Filter Type: H-Alpha
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$169.95