Parks ALP Filter

 Info  Votes  Messages  More Stats  Up One Level
Brand and Model:Parks ALP Filter
Price ($USD):89.95
Filter Position:
un-checked .96" checked 1.25" checked 2"
checked Visual Back un-checked Full Aperture
Description:These ALP (Anti Light Pollution) filters utilize state-of-the-art multi-layer coating technology to selectively filter out the mercury vapor and sodium light pollution. These filters are of tremendous value in the city since they block man-made light, and in dark sky locations they block neutral oxygen transmission (natrual sky glow). ALP filters are not used for Lunar, planetary or terrestrial photography. Threaded to fit eyepieces and camera adapters.

Vote Highlights Vote
No votes found!
Click here to see all votes (0 total)
[Click Here to Login]
Don't have a login? Register!