I am new to astrophotography and just got a monochrome CMOS camera with LRGBHa filters. I saw on ZWO’s website that they recommend an IR cutoff filter when using the CMOS camera and also the Ha filter to protect them from IR radiation. I have a background in astronomy and this seemed a bit dubious. Do they mean if I was photographing the Sun without an energy rejection filter? Otherwise the intensity of IR radiation from planets or DSO objects should be very tiny in intensity, no? Thanks for any clarification.