You have captured some great data there Tony. Given those objects were relatively low in the sky makes them even more impressive. Just watch your black clipping, I downloaded your images and had a play with them on my phone's picture editing app. There is so much more detail to extract from your images which has been hidden by your processing. The data is good and holds a lot more than you have shown. Good work all the same and your focus and colour look correct. Regarding monitor calibration, I think PS has monitor adjustments available in colour settings. Your monitor will also have colour profiles to choose from, normally some form of RGB profile will be used. Just make sure it matches the PS profile, if it isn't on the list then I guess you'll have to experiment by choosing the one that gives the best result.
