Astronomik Filters are used by the leading astrophotographers around the world!
Some of the most viewed images in the TWAN (The World At Night) gallery have been taken with Astronomik Filters!
http://twanight.org/newTwan/news2015.asp?newsID=6098
Directly to the image: http://www.twanight.org/newTWAN/photos.asp?ID=3004564