Igor,
The best way to integrate a mix of exposure times depends on what you're trying to do.
A common reason to do this is to achieve higher dynamic range in the integrated image. You want to use the short exposures to avoid overexposing the brightest areas in your image (for example to preserve star colors) AND the long exposures for the dim areas in the same final image (for example to bring out faint nebular details without as much noise).
I don't think you will achieve that optimal mix if you just integrate all the exposures into a single stack.
Rather, you want to use the HDRComposition process. This lets you set thresholds for choosing the dimmer values in the final HDR composite. You first have to prepare all the subs as John suggests, including registering all of them to a common reference. Then you integrate each exposure length into its own stack. And finally you run HDRComposition to combine the resulting stacks.
Hi John,
Many thanks.
After CosmeticCorrection, Weighting and Alignment of each frame, I understand that you will mix 600s and 1200s frames into one unique Integration Process ?
Regards
Igor
