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Optolong Variable Polarizer Filter - 1.25" Mounted - VPO-125

SKU: OTL-VPO-125
  • Filter Type: Polarizing
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$39.00

Optolong Variable Polarizer Filter - 2" Mounted - VPO-200

SKU: OTL-VPO-200
  • Filter Type: Polarizing
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$48.00

Optolong Neutral Density ND3 Filter - 1.25" Mounted - ND3-125

SKU: OTL-ND3-125
  • Filter Type: Neutral Density/Moon
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$49.00

Optolong Neutral Density ND3 Filter - 2" Mounted - ND3-200

SKU: OTL-ND3-200
  • Filter Type: Neutral Density/Moon
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$79.00

Optolong Moon SkyGlow Filter - 1.25" Mounted - MSG-125

SKU: OTL-MSG-125
  • Filter Type: SkyGlow
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$32.00

Optolong Moon SkyGlow Filter - 2" Mounted - MSG-200

SKU: OTL-MSG-200
  • Filter Type: SkyGlow
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$48.00
Optolong UBVRI Filter Set

Optolong UBVRI Filter Set - 1.25" Mounted - UBVRI-125

SKU: OTL-UBVRI-125
  • Filter Type: Photometric (UBVIR, Johnson-Cousins)
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$685.00
Optolong UBVRI Filter Set

Optolong UBVRI Filter Set - 2" Mounted - UBVRI-200

SKU: OTL-UBVRI-200
  • Filter Type: Photometric (UBVIR, Johnson-Cousins)
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$830.00

Optolong Venus U Filter - 1.25" Mounted - VEU-125

SKU: OTL-VEU-125
  • Filter Type: Fringe-Killer/Minus Violet
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$195.00

Optolong Venus U Filter - 2" Mounted - VEU-200

SKU: OTL-VEU-200
  • Filter Type: Fringe-Killer/Minus Violet
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$250.00

Optolong LRGB CCD Filter Set - 1.25" Mounted - LRGB-125

SKU: OTL-LRGB-125
  • Filter Type: RGB
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$249.00

Optolong LRGB Filter Set - 2" Mounted - LRGB-200

SKU: OTL-LRGB-200
  • Filter Type: RGB
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$359.00

Optolong LRGB CCD Filter Set - 31mm Unmounted - LRGB-31U

SKU: OTL-LRGB-31U
  • Filter Type: RGB
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$291.00

Optolong LRGB CCD Filter Set - 36mm Unmounted - LRGB-36U

SKU: OTL-LRGB-36U
  • Filter Type: RGB
  • Filter Size: 36 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$299.00

Optolong UHC Filter - 1.25" Mounted - UHC-125

SKU: OTL-UHC-125
  • Filter Type: UHC
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$55.00

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 UV-IR Cut Filter - 1.25" Mounted - UVIR-125

SKU: OTL-UVIR-125
  • Filter Type: UV/IR/Luminance
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$44.00
Optolong UV/IR Filter - 2"

Optolong UV-IR Cut Filter - 2" Mounted - UVIR-200

SKU: OTL-UVIR-200
  • Filter Type: UV/IR/Luminance
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$65.00
Optolong UVIR Cut Unmounted Filter

Optolong UV-IR Cut Filter - 31mm Unmounted - UVIR-31U

SKU: OTL-UVIR-31U
  • Filter Type: UV/IR/Luminance
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$44.00
Optolong UVIR Cut Unmounted Filter

Optolong UV-IR Cut Filter - 36mm Unmounted - UVIR-36U

SKU: OTL-UVIR-36U
  • Filter Type: UV/IR/Luminance
  • Filter Size: 36 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$56.00
Optolong LRGB and 7nm H-Alpha Filter Se

Optolong 1.25" LRGB and 7nm H-Alpha Filter Set - LRGB-HA-125

SKU: OTL-LRGB-HA-125
  • Filter Type: RGB & Narrowband Set
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$399.00
Optolong LRGB and 7nm H-Alpha Filter Set

Optolong 2" LRGB and 7nm H-Alpha Filter Set - LRGB-HA-200

SKU: OTL-LRGB-HA-200
  • Filter Type: RGB & Narrowband Set
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$585.00
Optolong 1.25" Filter Set with LRGB, H-Alpha, SII, and OIII Filters

Optolong 1.25" Filter Set with LRGB, H-Alpha, SII, and OIII Filters - LRGB-HASIIOIII-125

SKU: OTL-LRGB-HASIIOIII-125
  • Filter Type: RGB & Narrowband Set
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$665.00
Optolong Filter Set with LRGB, H-Alpha, SII, and OIII Filters

Optolong 2" Filter Set with LRGB, H-Alpha, SII, and OIII Filters - LRGB-HASIIOIII-200

SKU: OTL-LRGB-HASIIOIII-200
  • Filter Type: RGB & Narrowband Set
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$1,009.00

Optolong SII CCD 6.5nm Filter - 1.25" Mounted - SIICCD65-125

SKU: OTL-SIICCD65-125
  • Filter Type: SII
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$159.00