ATT CoverAstronomy Technology Today (ATT) has published a two-part article comparing Astronomik CLS, UHC and UHC-E filters.
The first part deals with the use of our filters under bright skies, while part two goes into detail when observing under dark skies.

Download both parts of the article to decide which filters are best for you:


Gerd Neumann, jan 18th, 2021