darditti Posted November 8, 2008 Share Posted November 8, 2008 I'm not particularly pleased with this image. The object was in the mirk of the light pollution from central London that I have to the south particularly in the early evening, and there were bad LP effects in this image, of which I have removed the worst by cropping the corners. In addition all the stars look a bit comatic, which suggests a collimation error, but actually I think it is more atmospheric effects from the low altitude. They were also chromatically dispersed, which I have corrected by nudging the channels in Photoshop.Anyway, I had not imaged this object before, so now I have.David Link to comment Share on other sites More sharing options...
Beyond_Vision Posted November 8, 2008 Share Posted November 8, 2008 Under your conditions thats a fine M2 RegardsKevin Link to comment Share on other sites More sharing options...
barkis Posted November 8, 2008 Share Posted November 8, 2008 You can't win em all David, but as Kev. said, It is as good as the conditions allowed.Anyway, you give us some excellent stuff, so we ain't complaining. Ron. Link to comment Share on other sites More sharing options...
LostNSpace Posted November 8, 2008 Share Posted November 8, 2008 Thats not a bad image David.........With the effects of the LP you suffer along with the bright moon last night, then to top it off its low position when you imaged this one, youve done well in capturing M2Mark Link to comment Share on other sites More sharing options...
darditti Posted November 8, 2008 Author Share Posted November 8, 2008 I have had another go at this, and, using a different selection of flats, I have been able to get a flatter background and include the whole frame. I have also been able to bring out the outer regions of the cluster more. The stars are still comets though.Not taken last night, but more than a weeks ago, BTW Mark, so the Moon is no excuse, as there was none.David Link to comment Share on other sites More sharing options...
661-pete Posted November 8, 2008 Share Posted November 8, 2008 That's getting to look really nice now David, well 'rounded' and good colours. Shows what the old 350D can bring out! Pity about the 'coma' effect, perhaps you could find a way of losing it? Tried any sort of deconvolution tool?As it happens, M2 was one of the first things I tried imaging with my kit (also 350D) when I still had it in sussex, I just dug it out. It also shows 'coma' but I don't think mine's down to the atmosphere, my 'coma' goes the other way than yours, so it probably really is coma - or trailing!Looking forward to your DSo work in progress - inspiration to all those of us who live under far far better skies! Link to comment Share on other sites More sharing options...
Psychobilly Posted November 8, 2008 Share Posted November 8, 2008 Very Nice David...I haven't done much with GC's but images like yours make me think it's time, to give them a go...Billy... Link to comment Share on other sites More sharing options...
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