Quote Originally Posted by Bob Denny View Post
However on further thought, adding a parameter to an existing ASCOM standard method is a bad idea.
Agreed.

Quote Originally Posted by Bob Denny View Post
Better to add a new property to specify the sub-exposure duration or maybe better a new ExposeEx() method that takes two parameters. I prefer the new method but I won't fight either.

The new method makes sense to me too. ExposeWithAccumulate() would make it pretty clear what it does. Maybe ExposeStack()?