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 Saturday, 20 December 2025 · astronomical night 18:33 → 06:04 (11.51 h) · Moon 1% (new moon) · 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 |
|---|---|---|---|
| 16:50–18:00 | — nothing worth pointing at — | 1.17 | |
| 18:00–18:35 | M31 | 0.58 | 0.46 |
| 18:35–19:00 | M33 | 0.42 | 0.91 |
| 19:00–07:45 | — nothing worth pointing at — | 12.75 |
| target | astronomy | overall | best window | highest | Moon sep. | scheduled h |
|---|---|---|---|---|---|---|
| M31 Andromeda Galaxy | 100 | 10 | 18:35–19:00 (good) | 89.5° at 19:05 | 108.4° | 0.58 |
| M42 Great Orion Nebula | 89 | 0 | — | 42.9° at 00:00 | 143.5° | 0.0 |
| M45 Seven Sisters | 100 | 7 | 18:35–19:00 (good) | 72.5° at 22:10 | 141.1° | 0.0 |
| NGC 7000 North America Nebula | 81 | 17 | 18:35–19:00 (good) | 87.2° at 15:25 | 78.7° | 0.0 |
| V1057 Cyg | 81 | 17 | 18:35–19:00 (good) | 87.3° at 15:25 | 78.6° | 0.0 |
| M33 Triangulum Pinwheel | 100 | 10 | 18:35–19:00 (good) | 79.1° at 20:00 | 114.5° | 0.42 |
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2025-12-20"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"}.