Up to ten targets, one night: each gets its good/marginal/poor windows (darkness × altitude × Moon × clouds, as on the single-target page), then the night is handed out five minutes at a time to whichever target is best — with hysteresis, so you get a few solid blocks of at least 30 minutes, not a flicker. Targets that never win a block are listed with the reason.
Try: an autumn deep-sky night · ← previous night · next night →
Night of Friday, 31 October 2031 · astronomical night 18:51 → 05:18 (10.46 h) · Moon 97% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown
Each row is the target's quality through the night, white → amber → green for 0 → 0.3 → 0.6 → 1 (the same thresholds as poor / marginal / good). Dark blue: the schedule. Grey columns: twilight. Download: schedule CSV · targets CSV · JSON
| local | target | hours | mean quality |
|---|---|---|---|
| 17:15–20:35 | — nothing worth pointing at — | 3.33 | |
| 20:35–22:45 | M45 | 2.17 | 0.32 |
| 22:45–04:05 | — nothing worth pointing at — | 5.33 | |
| 04:05–05:20 | M45 | 1.25 | 0.31 |
| 05:20–06:55 | — nothing worth pointing at — | 1.58 |
| target | astronomy | overall | best window | highest | Moon sep. | scheduled h |
|---|---|---|---|---|---|---|
| M45 Seven Sisters | 24 | unknown | 20:35–22:45 (marginal) | 72.5° at 01:30 | 5.4° | 3.42 |
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2031-10-31"targets: names or RA Dec, separated by commas, semicolons or newlines, at most ten. The response carries targets[] (score, verdict, best_window, windows, transit, moon_separation), schedule[] (blocks with target, start/end in UTC and local, hours, mean_quality; target: null is idle time), unscheduled[] with a why, forecast_source, warnings[]. Missing targets → 400 {"error", "code": "targets_missing"}; an unreadable date → 400 {"error", "code": "invalid_date"}.