Celestron Light Pollution Filter Review

The perfect filter for viewing nebula from light polluted skies or for boosting the contrast of nebula from dark sky sites.

Celestron light pollution filter review.

Light pollution comes from any artificial light be it on a suburban porch or a city street lamp. What is a light pollution filter. While light pollution is a constant frustration modern technology can also give back at least a little to frustrated stargazers light pollution filters which are sophisticated glass optical filters with dozens of layers of carefully deposited dielectric coatings can reduce the effects of some types of urban lighting for visual observation of some deep sky objects especially those such as. Light pollution filters are typically 1 25 or 2 round filters that screw into your telescope to reduce the effects of light pollution on your viewing or imaging.

The design of the filter includes layers that block specific bandpass lines of the visible spectrum. The light pollution imaging lpi filter for the 8 rasa blocks light from some of the most common sources of light pollution between 400 700nm i e the visible spectrum including high and low pressure sodium vapor streetlights mercury vapor streetlights and natural airglow caused by oxygen in the atmosphere. At 305 square miles that is more than 820 street lamps per square mile. A light pollution telescope filter is probably the most generic of these types of filters and is designed to block out certain wavelengths of light such as the light being created by sodium vapor mercury fluorescent and other man made sources of light that are typically found in outdoor lighting.

The light pollution imaging lpi filter for the 8 rasa blocks light from some of the most common sources of light pollution between 400 700nm i e the visible spectrum including high and low pressure sodium vapor streetlights mercury vapor streetlights and natural airglow caused by oxygen in the atmosphere. If you think your town has a lot of street lights new york city operates more than 250 000 of the dark sky fighters many unshielded. These can be screwed on to a camera adapter eyepiece or onto a diagonal.