Orion SkyGlow Broadband Filter 5660

Orion SkyGlow Broadband Filter

An Effective Weapon for Combatting Bright Skies, Bad Contrast. Light pollution is waging war on amateur astronomy. But don't surrender - fight back with an Orion SkvGlow broadband filter! It's an advanced multilayer "interference" filter that blocks the most common wave-lengths of light pollution while passing desiable 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 Ille 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 bv 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 theirbrightness 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 colour filter. Without any filter, this bright planet's cloud bands frequently appear only as faint smears. Pop in the filter, and distinct banding, knottings, and festoons appear, and the edges of Jupiter's disk stand out crisply.

Suitable for Visual Observing in areas of moderate light pollution and for Astrophotography with Schmidt-Cassegrains.

You are buying from an authorized Orion Telescope & Binocular UK dealer.