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Old 12-12-2010, 04:38 PM
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CoolhandJo (Paul)
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NGC 253 - Sculptor Galaxy

This image is LRGB 40:32:32:32 8inch Newt Atik 314L+ (-9.5deg)

Everything seemed to work fine on the night, guiding was good, sky was clear, moon wasn't too bright.

As always, I find the Sculptor reasonably hard to process.

Comments welcomed

Thanks for viewing
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Old 12-12-2010, 04:46 PM
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multiweb (Marc)
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Great framing and excellent data. Bit pushed and clipped in the process but I'm sure there will be many sids. It's a corker in the making.
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Old 12-12-2010, 05:05 PM
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I think it looks great. You must have been happy to at least get the scope out. I think I will have to spray my scope with exit mould if it does not stop raining soon.
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Old 12-12-2010, 05:16 PM
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Yes it's a difficult one to get just right as per Marc but well done
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Old 12-12-2010, 05:25 PM
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Yep Dr Paul.

I agree with Mark, perhaps a little clipped but, the data is there. A little more tweaking, maybe a little less and you'll have a superb image.

Well done.


Darren
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Old 12-12-2010, 09:00 PM
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Thanks for the comments. Yes, definatly see the clipping issue. It was because of the dynamic range from the core. So I fixed this now by using a mask on a more stretched version.

I think this is better now - not sure I can squeeze anymore detail from this. Think I pushed the mirror to its limit with the exposure time given
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Old 13-12-2010, 02:47 AM
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Much better still a tad too red though look at the background stars you shouldn't see any red stars as such. I"d be interested to get hold of the TIFF file for processing if I can
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Old 13-12-2010, 07:12 AM
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Second one looks very nice Paul! Lovely detail captured!, See if you can neutralize the background like Trev mentions (little reddish) or color balance the darktones...
Other than that it`s a great 253!
cheers Gary
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Old 13-12-2010, 08:11 AM
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Thanks Gary - Trevor - Yes Iwill try and reduce the background red and post later. I will also get a tiff off to your Trevor.
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Old 13-12-2010, 08:33 AM
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The detail in your second image really jumps out at you! I like it. Fix the background and you've got one for the office wall!


Darren
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  #11  
Old 13-12-2010, 10:05 AM
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Looking good.
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  #12  
Old 13-12-2010, 02:00 PM
jase (Jason)
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The repro is looking much better Paul. Keep an eye on the histogram, as its quick to catch you out. Relatively short exposure time but a pleasing result none the less. Well done.
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Old 13-12-2010, 08:00 PM
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Thanks Darren, Mark, Jase - Yeah now that I am happy with guiding and the new camera testing I will put the effort in for longer exposure over multiple nights on my next target.

I pulled down the red background now! Yep - much less red in space!
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  #14  
Old 13-12-2010, 09:02 PM
Hagar (Doug)
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Nice one Paul, even got the surface jets on the galaxy.
Well done.
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