Here, you can (optionally) define any special instructions that modify the start or end time of an AutoFlats run.



Start Time Properties (Optional): In the case that no start time option is chosen, AutoFlats will start the run immediately upon clicking the “Run” button.  In order to delay start, you may choose:


  • Start at dusk (for Sky Flats): When this option is selected, clicking on the “Run” button will validate the run, connect required equipment and then await the next occurrence of dusk. When this option is checked, the next occurrence of dusk will appear at the end of the option’s text so that you can more easily figure out when the run will start.  AutoFlats calculates this value as the time associated with standard sunset (use the offset below to modify this value).
  • Start at dawn (for Sky Flats): When this option is selected, clicking on the “Run” button will validate the run, connect required equipment and then await the next occurrence of dawn. When this option is checked, the next occurrence of dawn will appear at the end of the option’s text so that you can more easily figure out when the run will start. AutoFlats will use the start of “astronomical twilight” for this option (use the offset below to modify this value).
  • Start at a specific time: Alternatively, you can specify the exact time you’d like to start the AutoFlats run.
  • Start offset: For any start time option, you may specify a start offset. The offset value is most useful for dusk / dawn options in that it creates the ability to specify a start time like “15 minutes after dusk”. This value can also be used when no start time delay option was chosen (see above). In this case, AutoFlats will interpret this value as “start (n) minutes from now”.


End Time Properties (Optional): In the case that no end time option is chosen, AutoFlats will end the run when all events are completed or it determines that it can no longer continue due to an issue like insufficient light. In order to override the default end time, you may choose:


  • End at dark (for Sky Flats): When this option is selected, the AutoFlats run will preemptively terminate when it is too dark to continue. AutoFlats is capable of determining, by itself, when not enough light exists, but specifying this option may allow for AutoFlats to finish without needing to go through the process of failing. When this option is checked, the next occurrence of ‘“too dark” will appear at the end of the option’s text so that you can more easily figure out when the run will end.  AutoFlats calculates this value as the end of Astronomical Twilight (use the offset below to modify this value).
  • End at light (for Sky Flats): When this option is selected, the AutoFlats run will preemptively terminate when it is too light to continue. AutoFlats is capable of determining, by itself, when too much light exists, but specifying this option may allow for AutoFlats to finish without needing to go through the process of failing. When this option is checked, the next occurrence of ‘“too light” will appear at the end of the option’s text so that you can more easily figure out when the run will end. AutoFlats calculates this value using the time associated with standard sunrise (use the offset below to modify this value).
  • End at first target start: When this option is selected, AutoFlats will terminate the run using the start time of the first target in the sequence. If the first target does not use a start time, enabling this option will produce an error. When this option is checked, the next sequence’s first target start time will appear at the end of the option’s text so that you can more easily figure out when the run will end.
  • End offset: For any end time option, you may specify an end offset. The offset value is most useful for “too dark” / “too light” options in that it creates the ability to specify an end time like “15 minutes before too dark”.