Home › Forums › Variable Stars › Introducing MetroPSF – a program for ensemble photometry › SNR calculation
18 April 2021 at 11:07 pm #584105
There is an old discussion on calculating SNR here. Basically I ended up calculating all of the non-photon sources directly by measuring the RMS value in the sky estimation. To calculate the photon, sqrt(N), noise you need to know the camera gain. I’ve implemented this in an automated aperture photometry tool that I use and it seems reasonable to me.