When choosing filters for deep-sky astrophotography, considerations include the type of objects being photographed, the level of light pollution in the observing location, the desired features to enhance or isolate, and the characteristics of the camera and telescope setup. Narrowband filters are often preferred for capturing emission nebulae and supernova remnants, while broadband filters may be suitable for imaging galaxies and star clusters.
Come for the Scenery, Stay for the Stars