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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 Monday, 31 August 2026 · astronomical night 21:34 → 05:08 (7.56 h) · Moon 85% (waning gibbous) · weather: ERA5 history

HD 189733HD 189733 20:25–21:00: quality 0.1HD 189733 21:00–21:20: quality 0.5HD 189733 21:20–21:35: quality 0.4HD 189733 21:35–22:30: quality 0.8HD 189733 22:30–01:00: quality 0.7HD 189733 01:00–02:35: quality 0.6HD 189733 02:35–03:35: quality 0.5HD 189733 03:35–03:55: quality 0.4HD 189733 03:55–04:15: quality 0.3observe HD 189733 21:00–04:05scheduleHD 18973320:0022:0000:0002:0004:0006:00

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
19:55–21:00 — nothing worth pointing at — 1.08
21:00–04:05 HD 189733 7.08 0.62
04:05–06:50 — nothing worth pointing at — 2.75

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
HD 189733 79 78 21:35–01:40 (good) 71.1° at 22:45 76.6° 7.08

💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-08-31"

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"}.