Quote:
Originally Posted by higginsdj
How well have you accounted for linearity in your images? How about saturated stars? You need to realise that Astrometrica was not designed with photometry in mind.
|
Thanks for your reply David,
There is one star that is saturated. Would that be excluded or can I manually exclude it in some way? I don't understand what you mean by linearity, I will read up on it tomorrow (run out of time right now). The images are quite consistent in terms of overall image quality, and al have a slight amount of RA drift evident, if that is what's meant by linearity (I doubt it). I will look up what programs othe than Astrometrica are suitable too (more suitable), and continue trying to work with CCDSoft. Think I need to work out what a "good" number for dmag is too. It's great that Astrometrica help has explanations of these terms but it (probably intentionally for good reason, like context) never says what value is expected/good
Thanks,
Roger.