Mark I shoot in raw because I like the pic to be an original representation of the sky. That way, I can add or reduce aspects of the shot to suit my preferences. To be honest though, the camera's jpegs do a pretty good job anyway. It's really up to you because the program I use to stack ( Deep Sky Stacker) which is a freeware program, will stack jpegs as well. I think in regard to cameras, whether we're talking Canon or Nikon, there isn't much between them. I'd look up reviews online and see how they compare in regard to noise at high isos, sensitivity (to Ha especially) and features such as a variable Lcd screen, which is a real asset to have for astro shots when the camera can be at all sorts of angles. There may be others on this forum that will know more about this. By the way, thanks for the compliment about the Milky Way shot.
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