The fundamental width of the detector photo-site, assumed to be square.
To calculate for a binned image, change the
Binning field but do not change the fundamental Pixel Size.
For example, suppose your CCD has a 9 micron pixel. To use a 2x2 binned
image with effective 18 micron pixels, set Pixel Size=9 and Binning=2.
All calculations are made for binned pixels.
The number of detector pixels per image pixel.
This assumes the detector is binned n x n, where n = 1, 2,
etc. See the Pixel Size parameter.
The detector readout noise is the intrinsic rms noise in a zero second exposure.
The number of electrons per ADU (Analog to Digital Unit) or DN (Digital Number) in the image.
The temperature of the detector.
The doubling temperature for dark current approximated as a line in a
log-log plot of dark current versus temperature. See the detector's data sheet.
The reference temperature for the detector Dark Current. See the detector's data sheet.
The rate of thermal electron production at a refernece temperature. See the detector's data sheet.
The dark current is calculated using a simple
doubling rule starting from a known reference dark current at a
reference temperature. This is a very good approximation when the
sensor temperature is not too far below the reference temperature,
say within 5 or 6 doublings. However, getting
even further below the reference temperature, the dark current can
become so small that it has negligible effect on the calculated SNR.