I haven't enjoyed any luck at all with seeing conditions for Saturn this entire apparition until recently. This is a low altitude Saturn taken on August 11 in good seeing considering it's relatively low altitude of 25°. It's presented here as a demonstration of what is possible with a properly adjusted atmospheric dispersion corrector. Top image is actually mislabeled as the ADC is in the imaging train but adjusted to the neutral position, essentially acting as if it was OFF and showing strong atmospheric dispersion. Middle image is the same as the top, but with the RGB channels realigned. Bottom image is Saturn taken with the ADC properly adjusted to cancel out the dispersion.
These images were taken minutes apart at the same focus point and with the exact same capture settings. Processing steps were exactly the same, right down to the color balance weights in Registax 6 and wavelet settings. Mild high pass tweaking in PhotoShop was also identical.
About the only thing that may skew the apparent differences here is that with alignment and stacking on AutoStakkert, I expect that the software had an easier time accurately aligning the ADC corrected video. However I tried several different alignment point settings with the uncorrected video and to the eye the results were consistent.
Edited by John Boudreau, 23 August 2015 - 02:55 PM.