Charged Coupled Devices (CCDs) were invented in the 1970s as memory devices. However, their light sensitive properties made them ideal for imaging applications. These improved light gathering power of telescopes significantly over what film cameras were producing. Today’s CCD Cameras (CCDs for short) are equivalent to the past observer using film on a 1-meter telescope.
Here we introduce one of the two standardized set of filters you will use on projects with BRIEF: SLOAN ugriz.