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Optolong OIII CCD 12nm Filter - 2" Mounted - OIIICCD12NM-200

SKU: OTL-OIIICCD12NM-200

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List price: $179.00

Our price: $143.20

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Optolong OIII 12nm Filter - 2”




The Optolong Oxygen III 12nm Narrowband Filter transmits a 12nm bandwidth of light that is centered at 500nm and drastically reduces other transmissions, including wavelengths of light that are responsible for light pollution (both artificial and natural). It also blocks infrared wavelengths from 700 to 1100nm so you don't need a separate IR-Cut filter.



This filter does wonders when imaging emission and planetary nebulae, and does a great job on supernova remnants as well. The Optolong 12nm Oxygen III filter can be used alone to pull out the blue-green structure in star-forming regions and emission nebulae or in conjunction with H-Alpha and SII 12nm filters for false color emission line images like the Hubble Space Telescope.



The Optolong 2” OIII 12nm Filter is made with Schott glass that has been multi-coated with an ion-assisted deposition technology to ensure scratch resistance and stability on the central wavelength, or CWL. The filter cell is made of lightweight, strong metal and is CNC machined, sand-blasted, black anodized, and then laser engraved. The result is a super thin filter cell that will produce a clear aperture of 45mm.



Quality Filter Materials:



  • Schott B260 substrate material from Germany, 2.0mm thick

  • CNC machined and black anodized aero-metal filter cell that is ultra-thin to provide largest clear aperture; Laser-engraved to prevent fading

  • Multiple layers of anti-reflection non-cementing coatings applied via electron-beam gun evaporation with Ion-assisted deposition


Optolong Filter Manufacturing Processes and Parameters




  • Filter substrate is fine-optically polished to 1/4 wave and <30 parallelism over both surfaces

  • Surface quality, according to MIL-O-13830, is 60/40

  • 90% transmission at OIII line 500nm

  • Infrared wavelength 700-1100nm cut-off

  • 0.1% transmission Hg at 435nm and 578nm

  • 0.1% transmission Na at 589nm

  • High value transmission of pass-band and optical density of off-band is assured through Optolong’s planetary rotation system, a homogenous and precise coating procedure

  • Thin metal cells have a clear aperture of 45mm for 2” filters

  • Each filter comes with a plastic case with high pressure EVA case lining


About Optolong



Optolong is the Astronomy Filters division of Yulong Optics, an optical filter design and processing company out of Kunming, China that has provided filters for over 700 optical companies since 1999. All Optolong filters pass European Union RoHS requirements and have been certified by TUV Rheinland and Bureau Veritas.

Description
Description

Optolong OIII 12nm Filter - 2”

The Optolong Oxygen III 12nm Narrowband Filter transmits a 12nm bandwidth of light that is centered at 500nm and drastically reduces other transmissions, including wavelengths of light that are responsible for light pollution (both artificial and natural). It also blocks infrared wavelengths from 700 to 1100nm so you don't need a separate IR-Cut filter.

This filter does wonders when imaging emission and planetary nebulae, and does a great job on supernova remnants as well. The Optolong 12nm Oxygen III filter can be used alone to pull out the blue-green structure in star-forming regions and emission nebulae or in conjunction with H-Alpha and SII 12nm filters for false color emission line images like the Hubble Space Telescope.

The Optolong 2” OIII 12nm Filter is made with Schott glass that has been multi-coated with an ion-assisted deposition technology to ensure scratch resistance and stability on the central wavelength, or CWL. The filter cell is made of lightweight, strong metal and is CNC machined, sand-blasted, black anodized, and then laser engraved. The result is a super thin filter cell that will produce a clear aperture of 45mm.

Quality Filter Materials:

  • Schott B260 substrate material from Germany, 2.0mm thick
  • CNC machined and black anodized aero-metal filter cell that is ultra-thin to provide largest clear aperture; Laser-engraved to prevent fading
  • Multiple layers of anti-reflection non-cementing coatings applied via electron-beam gun evaporation with Ion-assisted deposition

Optolong Filter Manufacturing Processes and Parameters

  • Filter substrate is fine-optically polished to 1/4 wave and <30 parallelism over both surfaces
  • Surface quality, according to MIL-O-13830, is 60/40
  • 90% transmission at OIII line 500nm
  • Infrared wavelength 700-1100nm cut-off
  • 0.1% transmission Hg at 435nm and 578nm
  • 0.1% transmission Na at 589nm
  • High value transmission of pass-band and optical density of off-band is assured through Optolong’s planetary rotation system, a homogenous and precise coating procedure
  • Thin metal cells have a clear aperture of 45mm for 2” filters
  • Each filter comes with a plastic case with high pressure EVA case lining

About Optolong

Optolong is the Astronomy Filters division of Yulong Optics, an optical filter design and processing company out of Kunming, China that has provided filters for over 700 optical companies since 1999. All Optolong filters pass European Union RoHS requirements and have been certified by TUV Rheinland and Bureau Veritas.

Specifications
Specifications
Model Number OIIICCD12NM-200
Filter - Single or Set? Single Filter
Filter Size 50.8 mm (2")
Filter Type Narrowband Imaging
Filter Shape Round
Mounted or Unmounted? Mounted
Filter Warranty Two Years
What's in the Box?
What's in the Box?
  • Optolong 2" OIII CCD 12nm Filter
  • Filter Case
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