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A Guide to Light-Pollution Filters for Visual Astronomy

Discussion in 'All Other Observing Equipment' started by Agena AstroProducts, May 11, 2018.

A Guide to Light-Pollution Filters for Visual Astronomy

Started by Agena AstroProducts on May 11, 2018 at 2:58 AM

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  1. Agena AstroProducts

    Agena AstroProducts Vendor

    Jul 16, 2015
    Trophy Points:
    Los Angeles Area, CA
    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 nebulae that emit light at discrete wavelengths that are distinct from those of many forms of light pollution. For this reason, they are sometimes called nebula filters, and they work particularly well to improve the contrast of emission nebulae, planetary nebula, and supernova remnants. They are not a cure-all for light pollution, and they don't replace truly dark skies, but when you select the right filters for your observing interests, location, and telescope, they can be an enormous aid in viewing detail in many celestial objects.

    This guide to light pollution filters for visual observers will help you understand the pros and cons of each of the three types of light pollution filter so you can make the best choice for your observing interests and equipment.

    Read the full guide here: https://agenaastro.com/guide-to-light-pollution-filters.html

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