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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 Sunday, 23 August 2026 · astronomical night 21:50 → 04:56 (7.1 h) · Moon 83% (waxing gibbous) · weather: ERA5 history

VegaVega 20:40–21:15: quality 0.1Vega 21:15–21:55: quality 0.3Vega 21:55–22:00: quality 0.6Vega 22:00–23:00: quality 0.5Vega 23:00–02:20: quality 0.6Vega 02:20–03:05: quality 0.8Vega 03:05–03:35: quality 0.7Vega 03:35–03:50: quality 0.6Vega 03:50–04:00: quality 0.5Vega 04:00–04:15: quality 0.4Vega 04:15–04:20: quality 0.3observe Vega 21:55–04:20scheduleVega22:0000:0002:0004:0006:00

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
20:05–21:55 — nothing worth pointing at — 1.83
21:55–04:20 Vega 6.42 0.61
04:20–06:40 — nothing worth pointing at — 2.33

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
Vega Vega 86 75 23:00–03:40 (good) 87.1° at 21:50 65.7° 6.42

💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-08-23"

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"}.