Havent used SGP, but am a great fan of PixInsight. I acquire in Maxim then do the rest of the processing in PI. No photoshop here. As one of the previous posters suggested, go to Harry's astroshed. It's really good and enough to give you a great start. I don't have Warren Kellers DVDs, but I wasn't too impressed with the free samples on his website. Stick with the PI--you won't regret it.
Geoff
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