Tag Archives: light pollution filter

Skywatcher Light Pollution Filter. Wavelength chart

Posted on November 22, 2012 by Reviewer

The Skywatcher light pollution filter helps cut out mercury-vapour light. In other words, the light given off by street and house lights. The end result is that you can cut through the light pollution to aid views of the heavens. … Continue reading →

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What is a Light Pollution Filter

Posted on July 7, 2011 by Reviewer

  A light pollution filter screws in to the inner thread of an astronomical telescope eyepiece. The lens coatings help block out street/house lights, yet allow light from emision Nebulae to get through. Unlike stars, emission nebulae give off light in … Continue reading →

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