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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 Tuesday, 22 June 2027 · astronomical night 23:10 → 03:35 (4.42 h) · Moon 87% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

3C 2733C 273 21:35–22:20: quality 0.13C 273 22:20–23:15: quality 0.43C 273 23:15–23:20: quality 0.83C 273 23:20–23:30: quality 0.73C 273 23:30–23:40: quality 0.63C 273 23:40–23:55: quality 0.53C 273 23:55–00:10: quality 0.4observe 3C 273 22:20–00:10schedule3C 27322:0000:0002:0004:00

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
20:55–22:20 — nothing worth pointing at — 1.42
22:20–00:10 3C 273 1.83 0.49
00:10–05:50 — nothing worth pointing at — 5.67

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
3C 273 19 unknown 23:15–23:35 (good) 50.2° at 19:50 127.9° 1.83

💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-06-22"

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"}.