Reviews
These filters work, especially in areas rich with sodium/mercury vapour lights, but don't expect total cancellation or miracles. It does help bring out details and colours in the night sky, but it isn't quite the same as a Optolong or STC LP filter. Mine has scratched easy and I'm very careful with my equipment. I use a Mindshift Filter Hive with plush sleeves and it has still scratched.
09.07.2021