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Are light pollution filters still needed?


bendiddley
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Unfortunately they [ie 'traditional' LPR filters] don't work is the simple answer. LED streetlighting gives off too much at the 'blue end' of the visible spectrum. 

Using a neodymium, UHC or Olll filter should improve your viewing. The Olll maybe overkill on small aperture ‘scopes.

Edited by Philip R
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