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