Taking a preview In the CCD and Filter Wheel tab with "Auto Dark" enabled triggers a requester "Remove cover from the telescope in order to continue" even when an existing dark frame from the data base is being used. The requester should come up only when a dark picture has actually been taken.

Other than that "Auto Dark" works very well and resulting previews are much improved.

Thanks for report. It's fixed in GIT.

Thanks, Jasem! Tested and works as expected.

Along those lines... when I add an exposure to the sequence queue while "auto dark" is enabled, a requester pops up: "Auto dark subtract is not supported in batch mode".

While it's good to know no auto dark is available in batch mode, how about getting rid of the requester altogether? Instead, the "auto dark" option could be renamed "preview auto dark" which 1. is self-explaining and 2. removes the need for any requester when exposures are added to the queue in the first place.