>>1981476My DSLR has one of the filters removed which makes it more sensitive to Ha wavelength light. My primary camera is a mono cmos with a filter wheel though, so it's already a bare sensor for maximum sensitivity. Plus it's cooled so it performs far better than the DSLR on warm nights.
Pic related my mono camera and filter wheel doing galaxy imaging in 2 degree F. This pic is outdated, I actually control everything via a laptop now with a single wiring harness hub.