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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 Tuesday, 13 April 2027 · astronomical night 21:38 → 05:03 (7.42 h) · Moon 50% (first quarter) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 06:00–06:15: quality 0.1M42M42 20:30–21:05: quality 0.1M42 21:05–21:15: quality 0.2M42 21:15–21:20: quality 0.1M45M45 20:30–21:05: quality 0.1M45 21:05–21:20: quality 0.2NGC 7000NGC 7000 02:00–02:15: quality 0.4NGC 7000 02:15–02:35: quality 0.5NGC 7000 02:35–02:50: quality 0.6NGC 7000 02:50–03:05: quality 0.7NGC 7000 03:05–04:00: quality 0.8NGC 7000 04:00–05:05: quality 0.9NGC 7000 05:05–05:45: quality 0.5NGC 7000 05:45–06:10: quality 0.1NGC 7000 06:10–06:15: quality 0.2observe NGC 7000 02:00–03:55V1057 CygV1057 Cyg 02:00–02:15: quality 0.4V1057 Cyg 02:15–02:35: quality 0.5V1057 Cyg 02:35–02:55: quality 0.6V1057 Cyg 02:55–03:05: quality 0.7V1057 Cyg 03:05–04:00: quality 0.8V1057 Cyg 04:00–05:05: quality 0.9V1057 Cyg 05:05–05:45: quality 0.5V1057 Cyg 05:45–06:10: quality 0.1V1057 Cyg 06:10–06:15: quality 0.2observe V1057 Cyg 03:55–05:45M33scheduleNGC 7000V1057 Cyg20:0022:0000:0002:0004:0006:00

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
19:55–02:00 — nothing worth pointing at — 6.08
02:00–03:55 NGC 7000 1.92 0.66
03:55–05:45 V1057 Cyg 1.83 0.74
05:45–06:45 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 0 unknown — 89.7° at 12:40 85.1° 0.0
M42 Great Orion Nebula 0 unknown — 42.9° at 17:30 42.4° 0.0
M45 Seven Sisters 0 unknown — 72.5° at 15:45 53.6° 0.0
NGC 7000 North America Nebula 62 unknown 02:45–05:05 (good) 87.2° at 08:50 110.0° 1.92
V1057 Cyg 62 unknown 02:45–05:05 (good) 87.3° at 08:50 110.0° 1.83
M33 Triangulum Pinwheel 0 unknown — 79.1° at 13:30 80.0° 0.0

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-04-13"

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"}.