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Hi again Al.
With a 45 sec exposure time as an example using the 840K: Gain 20% Gamma 90% Brightness 60% If you dropped backed to 20 second exposures (for instance) I would then have to up the gain to roughly 50% dropping gamma to 60%
Totally different with the 900nc. The same exposure time (45 sec) would mean gain 70% gamma 80% brightness 75% contrast 90%.
The M42 pic I posted was 20 sec. exps. 10 stacked. With the 840K I can't get the detail seen even with 1 min.
I usually have to spend close to 1 hr on each target previewing different setting before I even consider capturing. What you see on the preview is what you get once capturing.
I use desire BTW I haven't tried K3 yet.
Make sure your running @ 5FPS & 1/25th.
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