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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, 06 December 2026 · astronomical night 18:30 → 05:54 (11.41 h) · Moon 4% (waning crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M45M45 17:35–18:00: quality 0.1M45 18:00–18:15: quality 0.3M45 18:15–18:35: quality 0.4M45 18:35–19:10: quality 0.8M45 19:10–20:30: quality 0.9M45 20:30–01:50: quality 1.0M45 01:50–03:10: quality 0.9M45 03:10–03:55: quality 0.8M45 03:55–04:10: quality 0.7M45 04:10–04:25: quality 0.6M45 04:25–04:40: quality 0.5M45 04:40–04:45: quality 0.4observe M45 18:00–04:45scheduleM4518:0020:0022:0000:0002:0004:0006:00

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
16:50–18:00 — nothing worth pointing at — 1.17
18:00–04:45 M45 10.75 0.88
04:45–07:35 — nothing worth pointing at — 2.83

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M45 Seven Sisters 100 unknown 18:35–04:15 (good) 72.5° at 23:05 171.6° 10.75

💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-12-06"

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"}.