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Deep Sky Filters

Items 1 - 25 of 275
Celestron OIII Narrowband Filter - 1.25"

Celestron Oxygen III (OIII) Narrowband 1.25" Filter - 93623

SKU: CEL-93623
  • Filter Type: OIII
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$89.95 $75.95
 

Celestron Oxygen III (OIII) Narrowband 2" Filter - 93624

SKU: CEL-93624
  • Filter Type: OIII
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$119.95 $99.95
 

Celestron 1.25" Ultra High Contrast (UHC) Light Pollution Reduction Filter - 94123

SKU: CEL-94123
  • Filter Type: CLS/LPR
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
$79.95 $69.95
 
Celestron 2" UHC Light Pollution Reduction Filter

Celestron Ultra High Contrast (UHC) Light Pollution Reduction 2" Filter - 94124

SKU: CEL-94124
  • Filter Type: CLS/LPR
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
$109.95 $92.95
 
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
 

Orion Oxygen III Nebula 1.25" Filter - 05581

SKU: ORI-05581
  • Filter Type: OIII
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
$99.99
 

Orion Oxygen III Nebula 2" Filter - 05582

SKU: ORI-05582
  • Filter Type: OIII
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
$129.99
 

Orion Hydrogen-Beta Nebula 1.25" Filter - 05583

SKU: ORI-05583
  • Filter Type: H-Beta
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
$99.99 $79.99
 

Orion Hydrogen-Beta Nebula 2" Filter - 05584

SKU: ORI-05584
  • Filter Type: H-Beta
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
$129.99
 

Orion Ultrablock Narrowband Light Pollution Reduction Filter 1.25" - 05654

SKU: ORI-05654
  • Filter Type: CLS/LPR
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
$79.99
 

Orion Ultrablock Narrowband Light Pollution Reduction Filter 2" - 05657

SKU: ORI-05657
  • Filter Type: CLS/LPR
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
$99.99
 

Orion SkyGlow Broadband Light Pollution Reduction Filter 2" - 05659

SKU: ORI-05659
  • Filter Type: CLS/LPR
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
$69.99
 

Orion SkyGlow Broadband Light Pollution Reduction Filter 1.25" - 05660

SKU: ORI-05660
  • Filter Type: CLS/LPR
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
$49.99
 

Lumicon Deep Sky 1.25" Filter - LF3010

SKU: LUM-LF3010
  • Filter Type: Nebula/Broadband
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
$100.00
 

Lumicon 2" Deep Sky Filter - LF3015

SKU: LUM-LF3015
  • Filter Type: Nebula/Broadband
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$200.00
 

Lumicon Deep Sky Thread on Filter for Schmidt-Cassegrain Rear Cell - LF3020

SKU: LUM-LF3020
  • Filter Type: Nebula/Broadband
  • Filter Size: SCT Rear Cell
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$200.00
 

Lumicon 1.25" Ultra High Contrast (UHC) Filter - LF3025

SKU: LUM-LF3025
  • Filter Type: UHC
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$100.00
 

Lumicon 2" Ultra High Contrast (UHC) Filter - LF3030

SKU: LUM-LF3030
  • Filter Type: UHC
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$200.00
 

Lumicon Ultra High Contrast (UHC) Thread-on Filter for Schmidt-Cassegrain Rear Cell - LF3035

SKU: LUM-LF3035
  • Filter Type: UHC
  • Filter Size: SCT Rear Cell
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$200.00
 
Lumicon 1.25" OIII Filter

Lumicon Gen 3 OIII Oxygen III Filter - 1.25" - LF3040

SKU: LUM-LF3040
  • Filter Type: OIII
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$100.00
 

Lumicon Gen 3 OIII Oxygen III Filter - 2" - LF3045

SKU: LUM-LF3045
  • Filter Type: OIII
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$200.00
 

Lumicon Oxygen III (OIII) Thread-on Filter for Schmidt-Cassegrain Rear Cell - LF3050

SKU: LUM-LF3050
  • Filter Type: OIII
  • Filter Size: SCT Rear Cell
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$200.00