Thread: Which Light Pollution Filter is best for me?
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  #11  
Old 07-03-2018, 11:04 AM
chromus (Phil)
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Join Date: Dec 2016
Location: Atwell
Posts: 57
Can't find much literature on these, but they were released this week and cover normal Na and Hg vapour like the old version PLUS now LED street lighting.

http://www.ontariotelescope.com/LPS-...er_p_1454.html
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