Many of you provided helpful critiques of my original bubble. It had problems, but I wasn't sure where to start in fixing them.
I redid the processing, going much easier on the saturation, and eliminating a nasty gradient in the green channel. I was also much more careful in applying curves and levels. The photo shows the final result (top) and the earlier effort (bottom) posted a few days back.
Once again, please be free with your criticisms and suggestions, which I find most helpful.
Rob Mackie
Note: I Imaged with AP 130 @ F/4.5 with SXV H9 CCD. Guided with SBIG STV. Luminance consists of 156 minutes with Hydrogen Alpha 13nm filter (6 minute subs). Red channel is combination of five 6 minute HA exposures and three 10 minute red filter exposures. Green and blue channels each consists of six 10-minute images.
Total exposure time was 336 minutes. HA portion was done in Sept 2006, colors acquired October 2006.
Color exposures were filtered through an IDAS LPS filter to combat light pollution at my SF Bay Area imaging home.
I redid the processing, going much easier on the saturation, and eliminating a nasty gradient in the green channel. I was also much more careful in applying curves and levels. The photo shows the final result (top) and the earlier effort (bottom) posted a few days back.
Once again, please be free with your criticisms and suggestions, which I find most helpful.
Rob Mackie
Note: I Imaged with AP 130 @ F/4.5 with SXV H9 CCD. Guided with SBIG STV. Luminance consists of 156 minutes with Hydrogen Alpha 13nm filter (6 minute subs). Red channel is combination of five 6 minute HA exposures and three 10 minute red filter exposures. Green and blue channels each consists of six 10-minute images.
Total exposure time was 336 minutes. HA portion was done in Sept 2006, colors acquired October 2006.
Color exposures were filtered through an IDAS LPS filter to combat light pollution at my SF Bay Area imaging home.
Attached Image:
