I used the Spyder3 device to calibrate the monitor on the laptop. I found that there is a very small cone for viewing where the calibration appears good to the eye. The off-axis performance of the screen is lacking. Now that this has been done, I can at least confirm colors. The contrast is not so great, so I am unable to properly evaluate functions of noise reduction and clipping. Thus, these tasks must be done on a separate system or on a different display.
In the meantime, I reloaded the files into PI and did the ColorCalibration step again.
This fixed a lot of the green color cast and made the pictures look much better than they were before.
I can see that there are big problems in the dim areas of the sky where the noise reduction dropped off too much data. Also, I had a heavy hand on histogram stretching, clipping many of the stars.
For what it's worth, here are the modified images.
In the meantime, I reloaded the files into PI and did the ColorCalibration step again.
This fixed a lot of the green color cast and made the pictures look much better than they were before.
I can see that there are big problems in the dim areas of the sky where the noise reduction dropped off too much data. Also, I had a heavy hand on histogram stretching, clipping many of the stars.
For what it's worth, here are the modified images.
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| Crescent Nebula GSSP 2015 - Version 1 |
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| Annotated |
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