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 Wednesday, 10 September 2025 · astronomical night 21:14 → 05:21 (8.12 h) · Moon 87% (waning gibbous) · weather: ERA5 history
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 |
|---|---|---|---|
| 19:35–22:00 | — nothing worth pointing at — | 2.42 | |
| 22:00–00:15 | M31 | 2.25 | 0.45 |
| 00:15–01:00 | — nothing worth pointing at — | 0.75 | |
| 01:00–03:00 | M31 | 2.0 | 0.36 |
| 03:00–07:00 | — nothing worth pointing at — | 4.0 |
| target | astronomy | overall | best window | highest | Moon sep. | scheduled h |
|---|---|---|---|---|---|---|
| M31 Andromeda Galaxy | 47 | 28 | 22:00–00:15 (marginal) | 89.7° at 02:45 | 29.9° | 4.25 |
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2025-09-10"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"}.