[Granada]

Wondering does a light pollution filter (e.g., Astronomik CLS EOS APS-C) need to be used in conjunction with other filters (e.g., clip on the CLS filter to the DSLR, then add Ha/Sii/Oiii to the filter wheel) or by itself?
I guess what I'm not understanding is, since the light pollution filter filters out light pollution to make it seem like a dark site, do you then need to put other filters on top of it to filter out further bands (just as you would at a dark site), or how does it work?
Cheers!