And first photons indicate...WOW
Compared to the old 300D it's chalk and cheese.
Only tried standard photos so far, but soon to try it
on the back of the Mak.
Using "live view" will be heaven me thinks.
1) I think ISO 800 on bulb shots is the sweet point
2) Noise reduction is default on for shots > 30 seconds, (the camera will automatically take a dark frame for the same length as your exposure and subtract it) turning it off doesn't seem to dramatically decrease shots quality - but it halves exposure time. So maybe ignore it or at most take 1, 2, 3, 4, 5, 6, 7, 8, 9 , 10 minute dark frames and use these in DeepSkyStacker (Freeware)
Also suggest if you're imaging near mains - get a AC / DC converter.
Yes - its a great camera for visual and so far in my newbie hands you can see its decent for astrophotography. If you do a custom mod to it - like I think Jase or Houghty did - mounting a mother of a peltier to the CCD to cool it to -40 celcius - well it turns into a whole different capability beastie!