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Astronomik UHC-E Filter - 2" Round Mounted - UHCE-2

SKU: ASF-UHCE-2

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Astronomik 2" Round Mounted UHC-E Filter




For users of smaller telescopes who are on a budget, this Astronomik 2" UHC-E Filter is the perfect choice for deep sky observation of emission nebulae as well as comet viewing under heavily light polluted skies. Ideally equipped for up to 5" (125 mm) aperture instruments. The contrast between emission nebulae light and that of street lamp glow and the background sky is greatly enhanced with this filter.



The UHC-E Filter from Astronomik has a high 45 nm FWHM and blocks airglow, as well as mercury and sodium-vapor light typical in common street lamps, a major contributor to urban light pollution. While this filter doesn't increase the contrast between your intended target and the night sky as much as the UHC filter does, the UHC-E does increase the amount of light transmitted. This makes the UHC-E filter a more apt fit for telescopes with smaller apertures.



Astronomik 2" UHC-E Filter Highlights




  • This 2" Astronomik UHC-E Filter is optimally suited for smaller telescopes with apertures of 5" (125 mm) or less
  • Boosts contrast between deep sky emission nebulae and the skyglow background in heavily light polluted conditions
  • Due to the UHC-E filter's high FWHM of 45 nm, comet observation is attainable when it passes through a spectral line of Carbon
  • 94% maximum transmission
  • 480 nm to 525 nm and 645 nm plus transmission range
  • Parfocal with any other filter offered by Astronomik
  • 1 mm glass thickness
  • Multi-layer coatings provide full protection against the effects of scratching, aging, and high humidity
  • This filter is diffraction limited and thus will not lessen the optical efficiency of your telescope
  • All Astronomik filters arrive with a long-lasting, superb quality plastic storage container




Transmission Specifications



  • 94% transmission at 486 nm (H-beta)
  • 95% transmission at 496 nm (OIII)
  • 95% transmission at 501 nm (OIII)
  • 90% transmission at 656 nm (H-alpha)
  • Transmits from 465 nm to 530 nm as well as over 645 nm
  • Blocks all undesirable wavelengths
Description
Description

Astronomik 2" Round Mounted UHC-E Filter


For users of smaller telescopes who are on a budget, this Astronomik 2" UHC-E Filter is the perfect choice for deep sky observation of emission nebulae as well as comet viewing under heavily light polluted skies. Ideally equipped for up to 5" (125 mm) aperture instruments. The contrast between emission nebulae light and that of street lamp glow and the background sky is greatly enhanced with this filter.

The UHC-E Filter from Astronomik has a high 45 nm FWHM and blocks airglow, as well as mercury and sodium-vapor light typical in common street lamps, a major contributor to urban light pollution. While this filter doesn't increase the contrast between your intended target and the night sky as much as the UHC filter does, the UHC-E does increase the amount of light transmitted. This makes the UHC-E filter a more apt fit for telescopes with smaller apertures.

Astronomik 2" UHC-E Filter Highlights


  • This 2" Astronomik UHC-E Filter is optimally suited for smaller telescopes with apertures of 5" (125 mm) or less
  • Boosts contrast between deep sky emission nebulae and the skyglow background in heavily light polluted conditions
  • Due to the UHC-E filter's high FWHM of 45 nm, comet observation is attainable when it passes through a spectral line of Carbon
  • 94% maximum transmission
  • 480 nm to 525 nm and 645 nm plus transmission range
  • Parfocal with any other filter offered by Astronomik
  • 1 mm glass thickness
  • Multi-layer coatings provide full protection against the effects of scratching, aging, and high humidity
  • This filter is diffraction limited and thus will not lessen the optical efficiency of your telescope
  • All Astronomik filters arrive with a long-lasting, superb quality plastic storage container


Transmission Specifications

  • 94% transmission at 486 nm (H-beta)
  • 95% transmission at 496 nm (OIII)
  • 95% transmission at 501 nm (OIII)
  • 90% transmission at 656 nm (H-alpha)
  • Transmits from 465 nm to 530 nm as well as over 645 nm
  • Blocks all undesirable wavelengths
Specifications
Specifications
Model Number UHCE-2
Single Filter, Set, or Accessory Single Filter
Filter Type UHC
Filter Size 50.8 mm (2")
Filter Shape Round
Filter Insert Style Threaded
Filter Optical Thickness 1 mm
Warranty Astronomik 10 Years
What's in the Box?
What's in the Box?
  • Astronomik UHC-E Filter - 2" Round Mounted
  • Plastic Storage Case
  • Astronomik UHC-E Filter - 2" Round Mounted
  • Astronomik UHC-E Filter Transmission
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