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, 05 June 2026 · astronomical night 22:59 → 03:39 (4.66 h) · Moon 74% (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 |
|---|---|---|---|
| 20:50–22:10 | — nothing worth pointing at — | 1.33 | |
| 22:10–00:50 | 3C 273 | 2.67 | 0.53 |
| 00:50–01:00 | — nothing worth pointing at — | 0.17 | |
| 01:00–01:10 | 3C 273 | 0.17 | 0.33 |
| 01:10–05:50 | — nothing worth pointing at — | 4.67 |
| target | astronomy | overall | best window | highest | Moon sep. | scheduled h |
|---|---|---|---|---|---|---|
| 3C 273 | 46 | 35 | 23:00–00:00 (good) | 50.2° at 20:55 | 130.5° | 2.83 |
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-06-05"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"}.