Lieven Gentaur Dichroic Filters Dichroic filters, also known as "interference filters", are designed to work with incoming light that is perfectly perpendicular to the filter surface. This is fine when using dichroic filters for tel... Jan 12, 2026
Lieven Gentaur The AndreaU Mk II The AndreaU MK II UV bandpass filter from UVROptics was developed in 2016 to follow the success of the popular AndreaU filter. Some adjustments have been made since then. The transmission peak has bee... Jan 12, 2026