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Old 19-11-2008, 09:41 AM
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Large Natural Tarantula

I thought I would process the colour data to get a more 'natural' look now I am more awake. Let me know what you think.

Large full resolution image 3.8MB
http://members.optusnet.com.au/~avan...ngc2070nat.jpg

Details. Canon 5DH. SN10 with Paracorr, Colour with Hutech LPR filter 10x(1m, 2m, 4m and 8m) at 800 ISO at -10.0C. Usual HDR method.

Bert
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Old 19-11-2008, 10:44 AM
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jjjnettie (Jeanette)
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I like it a lot Bert. The subtle colouring, as you said, makes it very natural.
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Old 19-11-2008, 01:59 PM
jase (Jason)
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hear hear

Very nice work. Does look natural. Think the data could be stretched a little more, but you don't want to lose the subtle hues so its a tough call. Good job.
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Old 19-11-2008, 02:03 PM
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multiweb (Marc)
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Great colours Bert. Not surprised now that this area always looks grainy in the dark spots. Look at the amount of red stuff everywhere. It's subtle but it's all over the place.
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Old 19-11-2008, 05:46 PM
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Thanks jjjenettie for your careful consideration of the colour. It is a scientific fact that colour vision is carried on the X chromosome. Us blokes are at a disadvantage with subtle colour as human females can discern far more or finer colour differences than us blokes because they have two X chromosomes. Even with my limited senses I bow to your better colour sensitivity. I hope I got it near 'correct' whatever that is.

Jase it is very tempting to fiddle with curves etc with HDR. It only ends up losing dynamic range. I want to show from the brightest star to the faint nebulous bits and faint stars that pepper this galaxy. The trouble with our monitors and/or prints is they have at best eight bits of dynamic range. Some monitors only have six bits!

You are correct marc the 'graininess' usually is noise modulating the faint stuff so most people suppress it.

Bert
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Old 20-11-2008, 08:16 PM
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I redid the colour plus narrow band.

Natural image 3.0MB
http://members.optusnet.com.au/~avan...ngc2070nat.jpg

Natural plus NB enhanced 3.2MB
http://members.optusnet.com.au/~avan...2070nat+nb.jpg

I think this is about the best compromise though not the final answer.

bert
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  #7  
Old 20-11-2008, 10:24 PM
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dugnsuz (Doug)
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The stretch is very nice Bert - I like the ability to blink compare that the IIS images popup(!) allows
Very nice
Doug
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