Orion SkyGlow Broadband Filter - 2" Round Mounted

Orion SkyGlow Broadband Filter - 2" Round Mounted
$89.99
Item # OR-5659
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  • The Orion SkyGlow Filter works best for moderately light-polluted skies and for high contrast views of deep sky objects, especially nebulae.
  • Presented in a 2" round format mounted in a threaded, anodized aluminum cell.
  • The Orion SkyGlow Filter blocks the most common forms of light pollution, including pollution from mercury-vapor lights.
  • High transmissions of hydrogen-alpha, hydrogen-beta and doubly ionized oxygen wavelengths.
  • The Orion SkyGlow Filter also works well on planetary images, especially Jupiter.
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Orion SkyGlow Light Pollution Reduction Astronomy Filter - 2"

Light pollution is waging war on amateur astronomy. But don't surrender, fight back with an Orion SkyGlow broadband filter! It's an advanced multilayer "interference" filter that blocks the most common wavelengths of light pollution while passing desirable wavelengths with very little attenuation, yielding dramatically better deep-sky views.

SkyGlow filters feature improved blocking of mercury-vapor light and higher transmission at critical hydrogen-alpha and hydrogen-beta lines than competing filters, including expensive "premium" models. Bright, light-polluted skies appear much darker, and the contrast between object and sky is improved significantly.

The contrast-enhancement effect is particularly apparent when observing or photographing nebulas. Unlike stars, emission nebulas give off light in a very narrow range of wavelengths. SkyGlow broadband filters allow maximum transmission of the important wavelengths of hydrogen-alpha, hydrogen-beta and doubly ionized oxygen, the light bands most commonly emitted by nebulas. Views of galaxies and star clusters are also enhanced, although these objects don’t show as dramatic an improvement as nebulas. (They emit a broad spectrum, so their brightness is reduced along with light pollution.)

An unexpected advantage of the SkyGlow filter is its improvement of planetary images, particularly of Jupiter, especially in conjunction with a color filter. Without any filters, this bright planet's cloud bands frequently appear only as faint smears. Pop in the filters, and distinct banding, knottings, and festoons appear, and the edges of Jupiter's disk stand out crisply.

Orion SkyGlow Light Pollution Reduction Astronomy Filter Features

  • The SkyGlow filter enhances deep-sky observing in moderately light-polluted skies
  • 2" eyepiece filter blocks the most common wavelengths of light pollution for increased contrast and better view quality
  • SkyGlow improves the views of nebulas, galaxies and star clusters, especially when viewing in areas with light pollution from streetlights and sources
  • Ideal for backyard astronomy oberving when you don't have time to trek to a dark sky site
  • 2" filter designed for use with 2" telescope eyepieces
Orion Product Number: 5659
Additional Information

Additional Information

SKU OR-5659
Manufacturer Orion
Type of Filter Contrast Booster, Light Pollution Reduction
Filter Usage Imaging, Visual
Single or Set? Single Filter
Filter Size 2"
Filter Shape Round
Filter Mounted? Mounted
Warranty Orion Limited Warranty
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Included Items

Included Items

  • Orion SkyGlow Light Pollution Reduction Astronomy Filter - 2"
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