Filters for One Shot Colour cameras (OSC)

In very short: to combat light pollution you need filters. Also to get a specific wavelength you need them. If you are in a low Bortle region, up to Bortle 4, the need will be less unless you are looking for that specific wavelength for which you need a narrowband filter. This Extensive video about OSC filters also explaines why narrowband filters are best with monochrome cameras but also do a very good job with modern day OSCs.

I will place much more info about their use later.