Improve Image Statisics through Master Dark Subtraction


Hi, hopefully this would be of use to a reasonably wide number of users regardless of equipment used.

I tend to use the image statistics maximum value to gauge if I’m in danger of saturating star cores as it provides a maximum ADU value, however as this is processing the entire image this will also select hot/warm pixels giving an artificially high value.

Now in practice, I perform a “manual” image calibration using a master dark in an attempt to gain a true value of the maximum I can expect during processing, so the nature of this request would be to provide an option that would apply and “in-flight” image subtraction against a specified Master Dark possibly as an extension in the Tools menu.