technical question re dual exposure

[Pete]

Advanced imagers capture objects with bright and dim features by combining short exposures that don't burn out the bright section with long exposures that capture the dim fine details. I'm looking at a lovely image of the Cat's Eye Nebula created with 100X30s and 19X600s. And I know that this approach is used by some on M42.

Anyone use this approach? How are they combined? Are both batches simply stacked and processed together as a single batch?

[menardre]

I know you use Images Plus. I think that have a tutorial in which they imaged M42 twice and then combined.

I will see if I can find the tutorial and then e-mail it to you.

Roger