Alex,
I saved it in Photoshop Elements 5.0. So any Photoshop would work too.
Mike,
Thanks. Right now I'm just dabbling with some of the brighter DSO's. After I get a little experience, I'll probably lay out some more money. I am getting more and more into it so I think the extra set-up will be worth it. I figured that there was a lot I could do now and then when the itch got too big, I'd upgrade my camera and set-up. I may be better off with two telescopes too
. I may get something with wider field and that's more portable. That way, I don't have to fill up the whole backseat of my car with the CPC when I head off to darker skies.