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Rozhen Night Plan

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, 12 April 2030 · astronomical night 21:37 → 05:05 (7.46 h) · Moon 68% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

3C 2733C 273 20:35–21:05: quality 0.13C 273 21:05–21:40: quality 0.23C 273 21:40–22:55: quality 0.53C 273 22:55–03:45: quality 0.63C 273 03:45–03:55: quality 0.83C 273 03:55–04:10: quality 0.73C 273 04:10–04:25: quality 0.63C 273 04:25–04:40: quality 0.53C 273 04:40–04:45: quality 0.4observe 3C 273 21:40–04:45schedule3C 27320:0022:0000:0002:0004:0006:00

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

Schedule

localtargethoursmean quality
19:55–21:40 — nothing worth pointing at — 1.75
21:40–04:45 3C 273 7.08 0.6
04:45–06:45 — nothing worth pointing at — 2.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
3C 273 80 unknown 00:05–04:20 (good) 50.2° at 00:25 52.4° 7.08

💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2030-04-12"

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"}.