Hi Nigel,
In fact, the way that these scripts are developed (just like PixInsight in general), it is really NEVER 'too late'.
The only restriction will be down to when someone has the skill and time to implement it - and I can certainly see the merit of your suggestion (the ability to 'score' a series of images by virtue of the FWHM of just a single star - obviously the images have to be registered/aligned to make the 'detection' of the star a 'trivial' process for all images.
There is one other minor restriction, and that is that we do not yet really have a fully integrated 'FWHM Calculator' - this has existed in various forms, but is not yet part of the 'core' of PI. Therefore, anybody adding a facility such as yours is going to have to rely on the work of others (which might not be present in a given installation), or is going to have to seek permission to have it included with THEIR code, or is going to have to write the code from scratch.
If I had Nikolay's skills (I wish
) then I would be waiting for an FWHM option to appear 'inside' the core of PI - and then just make simple calls to that process from withim my script.
All that said, looking at the 'Noise Estimate' in ImageIntegration has actually given me a better 'feel' for image quality than almost all other methods - to the extent that, yes, whilst I would like to be able to 'graph' the FWHM data (not just for 'one' star, but for 'all easily detectable' stars), I would only be using the knowledge as a 'sanity check' - to help me visualise how an imaging session actually 'performed'.
