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Old 16-07-2013, 08:01 PM
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Shiraz (Ray)
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Join Date: Apr 2010
Location: ardrossan south australia
Posts: 4,918
Ngc6744 - repro added

crikey this was hard work. Object has fairly low surface brightness and seeing was 3-4 arcsec for lum and ~5 for RGB. Only managed very short total time on target over 2 nights due to clouds, so the processing was a fine tuning exercise to get back at least some detail without too much noise showing and while still keeping some of the the dimmer stuff. Colour was also compromised by gradients from thin cloud .

In the end though, was pleased with the outcome - deconvolution could only do so much and there are lots of technical faults, but it is such a beautiful object that the image is still worth keeping . Looking forward to imaging it under better conditions. thanks for looking - appreciate any feedback. Regards Ray

lum 50x2min@1x1
RGB 14:15:18 x2min@2x2
image cropped and scaled by 0.7 to improve appearance

200f4 + RCC1 at 1.17arcsec/pixel
SX H694
NEQ6

edit: on the basis of helpful and constructive comments, for second image, redid colour calibration, turned down stars a little and boosted dimmer regions slightly. Think I have reached the noise limit for this data. Thanks folks for the input.
Attached Thumbnails
Click for full-size image (ngc6744d.jpg)
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Click for full-size image (ngc6744f.jpg)
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Last edited by Shiraz; 18-07-2013 at 02:22 PM.
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