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Filters

Items 26 - 50 of 74
Astronomik 31 mm L-1 UV-IR Blocking Filter

Astronomik L-1 UV-IR Blocking Filter - 31 mm Round - L1-31

SKU: ASF-L1-31
  • Filter Type: UV/IR/Luminance
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$79.95
Astronomik L-2 UV-IR Blocker - 31 mm Round

Astronomik L-2 UV-IR Blocking Filter - 31 mm Round - L2-31

SKU: ASF-L2-31
  • Filter Type: UV/IR/Luminance
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$69.95
Astronomik 31 mm L-3 Luminance UV-IR Blocking Filter

Astronomik L-3 UV-IR Blocking Filter - 31 mm Round - L3-31

SKU: ASF-L3-31
  • Filter Type: UV/IR/Luminance
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$79.95
Astronomik 31 mm Round ProPlanet 642 IR-Pass Filter

Astronomik ProPlanet 642 IR Pass Filter - 31 mm Round - P642-31

SKU: ASF-P642-31
  • Filter Type: Pro Planet
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$79.95
Astronomik ProPlanet 742 IR-Pass 31 mm Round Filter

Astronomik ProPlanet 742 IR Pass Filter - 31 mm Round - P742-31

SKU: ASF-P742-31
  • Filter Type: Pro Planet
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$59.95
Astronomik ProPlanet 807 IR-Pass Filter - 31 mm Round

Astronomik ProPlanet 807 IR Pass Filter - 31 mm Round - P807-31

SKU: ASF-P807-31
  • Filter Type: Pro Planet
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$55.95

Optolong 31mm Unmounted Filter Set with LRGB, H-Alpha, SII, and OIII Filters - LRGB-HASIIOIII-31U

SKU: OTL-LRGB-HASIIOIII-31U
  • Filter Type: RGB & Narrowband Set
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$705.00

Optolong 31mm Unmounted LRGB and 7nm H-Alpha Filter Set - LRGB-HA-31U

SKU: OTL-LRGB-HA-31U
  • Filter Type: RGB & Narrowband Set
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$460.00

Optolong 31mm Unmounted Filter Set with H-Alpha, SII, and OIII Filters - HASIIOIII-31U

SKU: OTL-HASIIOIII-31U
  • Filter Type: Narrowband Set
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$540.00
Astrodon Generation 2 I-Series Tru-Balance LRGB Filter Set - 31 mm Unthreaded Insert

Astrodon Gen2 I-Series LRGB Tru-Balance Filter Set - 31 mm Unthreaded Insert - LRGB2-I31R

SKU: ASD-LRGB2-I31R
  • Filter Type: RGB
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$615.00
Astronomik 31 mm Round UHC-E Filter

Astronomik UHC-E Filter - 31 mm Round - UHCE-31

SKU: ASF-UHCE-31
  • Filter Type: UHC
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$75.95
Astronomik 31 mm Round Color Filter - Red

Astronomik Red Type 2c Filter - 31 mm Round - R-31

SKU: ASF-R-31
  • Filter Type: RGB
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$89.95
Astronomik 31 mm Round Color Filter - Green

Astronomik Green Type 2c Filter - 31 mm Round - G-31

SKU: ASF-G-31
  • Filter Type: RGB
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$89.95
Astronomik 31 mm Round Color Filter - Blue

Astronomik Blue Type 2c Filter - 31 mm Round - B-31

SKU: ASF-B-31
  • Filter Type: RGB
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$89.95
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

Baader Planetarium f/2 Highspeed Narrowband H-Alpha CCD Filter - 31mm Unmounted - FHALHS-RD31

SKU: BAD-FHALHS-RD31
  • Filter Type: H-Alpha
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
$209.00

Astrodon 3 nm H-Alpha Narrowband Filter - 31 mm Unthreaded Insert - HA3-31R

SKU: ASD-HA3-31R
  • Filter Type: H-Alpha
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$574.00
Astrodon 31 mm Unthreaded 3 nm OIII Narrowband Filter

Astrodon 3 nm OIII Narrowband Filter - 31 mm Unthreaded Insert - OIII3-31R

SKU: ASD-OIII3-31R
  • Filter Type: OIII
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$574.00

Astrodon Clear Filter with UV-Blocking Only - 31 mm Unthreaded Insert - C2-31R

SKU: ASD-C2-31R
  • Filter Type: Clear
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$183.00
Astrodon 31 mm Unthreaded Luminance Filter with UV/NIR Blocking

Astrodon Luminance UV/NIR Blocking Filter - 31 mm Unthreaded Insert - L2-31R

SKU: ASD-L2-31R
  • Filter Type: UV/IR/Luminance
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$194.00

Astrodon 5 nm H-Alpha Narrowband Filter - 31 mm Unthreaded Insert - HA5-31R

SKU: ASD-HA5-31R
  • Filter Type: H-Alpha
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$390.00
Astrodon SII 5 nm Narrowband Filter - 31 mm Unthreaded

Astrodon 5 nm SII Narrowband Filter - 31 mm Unthreaded Insert - SII5-31R

SKU: ASD-SII5-31R
  • Filter Type: SII
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$390.00
Astrodon 31 mm Unthreaded OIII Narrowband Filter - 5 nm

Astrodon 5 nm OIII Narrowband Filter - 31 mm Unthreaded Insert - OIII5-31R

SKU: ASD-OIII5-31R
  • Filter Type: OIII
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$390.00

Astrodon 5 nm Red Continuum Narrowband Filter - 31 mm Unthreaded Insert - REDCON5-31R

SKU: ASD-REDCON5-31R
  • Filter Type: Continuum (Not Solar)
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$390.00
3 nm SII Narrowband Filter - 31 mm Unthreaded Insert

Astrodon 3 nm SII Narrowband Filter - 31 mm Unthreaded Insert - SII3-31R

SKU: ASD-SII3-31R
  • Filter Type: SII
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$574.00