After downloading the last update of v3.5.3, I was upset because creation of dark library was not corrected.
We can't setup time over 60 sec and step over 20 sec.
I tipped already this issue.
Hi,
As i understand, the dark library is created in order to use it in Focus, Guide and Align module. In those modules, using more than 60s has no sense.
With narrowband filters, i'm using 10s for focus and align.
If you want to take dark frames with more than 60s, use module Capture as usual.