Calculator for Determiming the Signal-to-Noise of a Star/Pixel in a CCD Image
Use this calculator to make your life easier! Enter values measured in your image into the form below.
Click the "Calculate S/N" button.
The input variables, and the calculation itself, are explained in the document
Measuring the Signal-to-Noise Ratio S/N
of the CCD Image of a Star or Nebula. In that document (and in this calculator) S/N is calculated as
where the variables are listed below.