User:CorniceBowlSkier/Aperture Photometry

Aperture photometry is the calculation of astronomical-source intensity by summing or integrating the measured counts from pixels and sub-pixels of an image containing a source or soures within an aperture (image mask). The calculation also commonly involves subtracting oﬀ the contributions to the image data that do not originate from the source(s) of interest, which is generally referred to as the "background".