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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.

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Night of Saturday, 01 May 2027 · astronomical night 22:06 → 04:29 (6.38 h) · Moon 22% (waning crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

3C 2733C 273 20:50–21:30: quality 0.13C 273 21:30–21:45: quality 0.43C 273 21:45–22:10: quality 0.53C 273 22:10–01:50: quality 0.93C 273 01:50–02:45: quality 0.83C 273 02:45–03:00: quality 0.73C 273 03:00–03:15: quality 0.63C 273 03:15–03:25: quality 0.53C 273 03:25–03:35: quality 0.4observe 3C 273 21:30–03:35schedule3C 27322:0000:0002:0004:0006:00

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
20:15–21:30 — nothing worth pointing at — 1.25
21:30–03:35 3C 273 6.08 0.8
03:35–06:20 — nothing worth pointing at — 2.75

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
3C 273 93 unknown 22:10–03:05 (good) 50.2° at 23:15 158.5° 6.08

💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-05-01"

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"}.