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I’ve slept on what many of you said and I think I can see what you see on most counts, bar one. I still can’t perceive the “missing detail” issue. To my eye, the image abounds with detail. I will keep on trying to see what you see; it might take me months for my perception to change.
When saving the TIF file as JPG, the resulting image size is 7 MB for 95% compression. The image is very low noise; hence I infer that most of the 7 MB of data is detail in some sense.
Paul: Thanks for highlighting the Primalucelab electronic focusser. It’s a terrific suggestion. I will study it carefully. IMO, electronic focussing is essential for high quality astro work.
Bart: I did not use Adaptive Contrast Driven Noise Reduction (ACNR). From memory, I applied a single pass of the Local Histogram Equalisation algorithm; it is a powerful tool. I think I would have used a scale size of 512 pixels.
Andy: I have included a thumbnail of a single stretched raw H alpha sub, no calibration or processing whatsoever, exception for a single application of the PI screen transfer function. I don’t like sharing my raw unprocessed data, but you are special, so I will share it with you.
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