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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 Wednesday, 22 September 2027 · astronomical night 20:52 → 05:35 (8.72 h) · Moon 56% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M33M33 20:55–21:00: quality 0.4M33 21:00–21:15: quality 0.5M33 21:15–21:30: quality 0.6M33 21:30–21:45: quality 0.7M33 21:45–22:30: quality 0.8M33 22:30–23:00: quality 0.9M33 23:00–23:45: quality 0.7M33 23:45–01:20: quality 0.8M33 01:20–05:20: quality 0.7M33 05:20–05:40: quality 0.6M33 05:40–06:10: quality 0.3M33 06:10–06:45: quality 0.1observe M33 20:55–06:10scheduleM3320:0022:0000:0002:0004:0006:00

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
19:15–20:55 — nothing worth pointing at — 1.67
20:55–06:10 M33 9.25 0.7
06:10–07:10 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M33 Triangulum Pinwheel 88 unknown 21:25–05:40 (good) 79.1° at 02:50 51.2° 9.25

💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-09-22"

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"}.