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combined differential photometric precision

(CDPP)
(calculated relation of photometric variation to SNR)

The term combined differential photometric precision (CDPP) has been used for a particular calculation performed in processing Kepler Telescope data. It is a measure of the precision achieved by the processing that includes statistical techniques and accommodation for systematic errors. It can be thought of as an observation's brightness-difference in parts per million (PPM) that represents a signal-to-noise ratio of 1.


(measure,ratio)
Further reading:
https://ui.adsabs.harvard.edu/abs/2012PASP..124.1279C/abstract
https://keplerscience.arc.nasa.gov/ContributedSoftwareKepstddev.shtml

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