Optolong - UV-IR Cut Filter - 36mm Unmounted

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Improve image sharpness with the addition of an Optolong UV-IR Cut Filter, which blocks Ultraviolet and Infrared transmissions yet lets the visible spectral lines shine through. The IR (700nm to 1100nm) and UV (300nm - 400nm) part of the spectrum are not detectable to human eyes, however not to most CCD and other computerized cameras, which are sensitive to 300nm to 1100nm.

SKU: OPO-UVIR-36U
Manufactured by:
Optolong
 

Product Description

Improve image sharpness with the addition of an Optolong UV-IR Cut Filter, which blocks Ultraviolet and Infrared transmissions yet lets the visible spectral lines shine through. The IR (700nm to 1100nm) and UV (300nm - 400nm) part of the spectrum are not detectable to human eyes, however not to most CCD and other computerized cameras, which are sensitive to 300nm to 1100nm. With the Optolong UV-IR Cut filter installed, violet ahlos and an overall soft image are a thing of the past. This filter also reflects heat radiation and provides great protection against dust.

The Optolong 36mm Unmounted  UV-IR Cut Filter is composed with Schott glass that has been multi-coated with ion-assisted deposition technology to guarantee scratch resistance and stability on the central wavelength, or CWL. Every filter cell is made of lightweight, strong metal and is CNC machined, sand-blasted, black anodized, and finally laser engraved. This UV-IR Cut filter is designed to be used with color filter wheels that accept 36mm unmounted filters.

Quality Filter Materials:

  • Schott B260 substrate material from Germany, 2.0mm thick
  • 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
  • 95% transmission at visible spectral region 420-680nm highly passing the major nebula emission lines of H-Alpha 656nm, SII 672nm and NII 654nm and 658nm
  • Ultraviolet 300-400nm and infrared wavelength 700-1100nm cut-off
  • Optolong’s planetary rotation system is a homogenous and precise coating procedure that ensures both high transmission of pass-band and optical density of off-band
  • Each filter comes with a plastic case with high pressure EVA case lining

 

 

 

 

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Specifications

Name Optolong - UV-IR Cut Filter - 36mm Unmounted
Manufacturer Optolong
Model OPO-UVIR-36U
Filter size 36 mm
Filter Shape Round
Warranty Two Years

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