Wow man - I promise I wasn't smoking anything during processing. The 450D is unmodded, so it does often bring out the oxygen (blues) in emission nebs. I'm pretty sure the blue greens this time around are from the ED barlow used.
There's a decent whack of noise reduction used too - was a bit disappointed how much of that there was, but as you've said Dave, 50 mins ISO 800 is hardly a marathon.
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