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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, 21 May 2025 · astronomical night 22:39 → 03:55 (5.26 h) · Moon 34% (waning crescent) · weather: ERA5 history

VegaVega 23:00–00:00: quality 0.7Vega 00:00–00:10: quality 0.8Vega 00:10–01:00: quality 0.9Vega 01:00–02:00: quality 1.0Vega 02:00–03:00: quality 0.4Vega 03:00–03:10: quality 0.7Vega 03:10–04:00: quality 0.6Vega 04:00–04:45: quality 0.3Vega 04:45–05:25: quality 0.1observe Vega 23:00–04:00scheduleVega22:0000:0002:0004:00

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
20:35–23:00 — nothing worth pointing at — 2.42
23:00–04:00 Vega 5.0 0.72
04:00–06:00 — nothing worth pointing at — 2.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
Vega Vega 100 68 23:00–02:00 (good) 87.1° at 04:00 78.5° 5.0

💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2025-05-21"

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"}.