The Astrophotography Manual, 2nd Edition

Narrowband Image Processing

For astrophotographers living in light-polluted areas, narrowband imaging is a savior and a thing of wonder to everyone else.

 

 

 

Following along the same lines as the previous chapter on CFA imaging, a whole new world opens up with the introduction of processing images taken through narrowband filters. These filters select a precise emission wavelength and almost completely reject light pollution (and moonlight) with the potential for lowering sky noise and hence deliver a better signal to noise ratio. This permits many astrophotographers to successfully image from light polluted urban areas. Images taken with nar-rowband filters are quite distinct; their raison d’être are gloriously colored nebulous clouds, ...