I had bought this lunar filter because the moon-filter in my little refractor this was a ziehmlich poor quality (distortions and dark) had. I also wanted a filter of a somewhat more neutral color has, as I feel this relatively dark green as a not particularly pleasant. Now the Omegon Moon filter is processed as far as tidy, but I have the impression that he is almost a little too bright. The very bright blue is indeed more pleasant than this usual green, thus he is very bright but he's probably not suitable for telescopes with medium or larger opening. When observing the moon itself, he brings to the light-shadow boundary itself relatively little, but if you directly in the illuminated areas, with higher magnification, looking, you see a little more detail. But also because the effect law is low. As SkyGlow filter, or even on the Saturn filter has actually achieved anything.