Observing system

NOTCam observations typically consists of multiple short exposures. Thus, checking whether the rotator will reach limit for each exposure, as is implemented for the other instruments, does not make sense. Instead, it was decided to add this check into the template dither scripts we offer.

The implementation has been done by calculating the total time the script with the selected parameters will take, using a conservative estimate of the overheads, and compare this to the time to reach rotator limit (requesting the TCS). If there is not sufficient time to terminate the script, it is aborted at the start with an error. The user can then decide to try the script with modified parameters (i.e. faster) or to turn the rotator. All the standard dither scripts have been modified and tested. The new versions of these scripts are now in use.