Observatory Watch: Twelve Nights

Schedule exposures between visible windows and moonlight limits; leave a calibration gap before changing lenses. All values are abstract puzzle rules, not a real observing plan.
Night Shift1 / 12
Scheduled Targets0 / 0
Risk0
Compact Span-
Best☆☆☆

Twelve Nights of Observation Windows

The four chapters of night shifts progressively add consecutive exposures, moonlight limits, and instrument-change calibration. Each night has a fixed forecast; the official enumerator searches all valid schedules and verifies the published minimum-span line.