Hi all
Being in the imaging/pre-press game I've always used (and had to pay for) Adobe Photoshop. It's arguably the best app in the business when it comes to press work as it handles pretty-well all colour models including CMYK. There are other image editors around such as the GIMP which are free (as in fall under the GPL) but are still lacking in development and user-friendliness.
I've just come across another image editor (not GPL as such) called Pixel. It's still in its final beta development stage and costs the measly sum of US$32 to grab a licensed copy prior to final release. After release it will be around the US$79.00 mark - still a far cry from what Adobe want for Photoshop CS2. It's such a close functional copy of Photoshop it's scary. Not quite as polished in the GUI - but very good for the price. It's also prone to performing slowly unless, once installed, you go in to prefs and up both the cache and allocated momory to at least 1024kb and 512Mb respectively.
Pixel seems to do everything you guys in asro-imaging might need - and well. You can download a demo at
http://www.kanzelsberger.com/pixel/?page_id=12 to see if it suits. You won't lose anything to find out I guess.
It's probably old news to some of you but I couldn't find any mention of it here - so I thought that it was better to post than not.
FYI - I have absolutely no affiliation with the Pixel project.
Cheers
Chris