Few of us are
building a camera based on the ICX453AQ sensor and the question arose which UV-IR blocking filter to use at the front. The filter will also seal the camera from the outside world. We are looking at
Astronomik luminance filters. Astronomik offers 3 filters with different spectral properties (L1, L2 and L3, as in the link above). The choice will clearly depend on the rest of the gear used.
I am using SkyWatcher ED80 (gold) + Hotech SCA flattener. I used Baader UV-IR cut with my IR modded DSLR and it worked well (until I dropped the filter and smashed it). Baader filter has the same IR transmission cutoff as the Astronomik L2 but it looks more like L3 at the UV end so I am not sure if L2 or L3 would be a better choice.
Any hints would be greatly appreciated.