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Completion Rate of Grade-A and Grade-B programs in S19A-S20B semesters.

The following figures show the overall completion rate of accepted S19A-S20B Queue-mode programs against the allocated time in hours. Each symbol's color and mark size indicates the seeing size and the moon-phase constraints of each program, respectively. The completion rate is generally related to the seeing, transparency, and moon-phase constraints, as well as the program grade, the target visibility, and the filters.

  • The completion rate is the total exposure time of completed Observing Blocks (OB) over the allocated time.
  • The "completed" OBs mean the OBs passed the Quality Assessment.
  • The most strict one is used if the program set several constraints for different OBs.
  • The allocated hours of intensive programs are divided by each semester.