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Originally Posted by gregbradley
I agree with the other posts, that is a super image. That AO8 helps do you think? The stars are very tight.
Greg.
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Thanks Greg,
Yes the AO8 does help. That said, I didn't use particularly fast corrections with it. I change the corrections depending on the sky / filters, with deep reds, i.e Ha and SII, the observed oscillations are kind of slow so I stick with around 2Hz. Anything higher keeps the same FWHM but the lower spread appears amplified. I don't understand it, I just use gut feeling and fiddle a bit. I'll leave the math for the professors on here... lol
I am sampling at 0.44", with FWHM consistently below 2".
My mount is pretty smooth, probably well within 1" with PEC applied (my graphs say +/- 0.3" but I tend to take this with a grain of salt), so the AO doesn't need to do a whole lot in that regard.
I'm sitting around 586m above sea level, so that probably helps a little? I wish I had this thing sitting on the mountains a few km away!
Quote:
Originally Posted by Paul Haese
Good detail Chris with nice tight stars. Maybe just a little dark as the luminance on the large Bok globule is not well seen. The striations emanating from the bottom gas and dust cloud at well defined too. Not sure about the colour though but that is really personal preference. Well done.
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Thanks Paul, not sure how to boost this as the bok has a similar profile to the background in the lower right corner, If I boost that part of the histogram the weaker background falls apart so I left it a bit darker. It's like someone or something is puffing on a cigar and blowing the smoke over the boks. The scene reminds me of a series of novels (the rift-war saga), two sorcerers are effectively observing the creation of the universe.
). The SII has some very tight detail, effectively it appears as a structural highlight. Initial test subs of this were pretty useless as I had the wrong settings and there was very little signal there. I gave it another go last night during a fairly full moon and random clouds passing over, neither of which seemed to impact the long subs.
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