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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 Friday, 02 September 2039 · astronomical night 21:31 → 05:10 (7.66 h) · Moon 100% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 21:00–21:35: quality 0.2M31 21:35–03:35: quality 0.5M31 03:35–05:15: quality 0.6M31 05:15–05:50: quality 0.3M31 05:50–06:25: quality 0.1observe M31 00:00–01:30M42M42 04:25–04:30: quality 0.3M42 04:30–04:50: quality 0.4M42 04:50–05:10: quality 0.5M42 05:10–05:15: quality 0.6M42 05:15–05:50: quality 0.3M42 05:50–06:25: quality 0.1observe M42 04:30–05:15observe M42 05:45–05:50M45M45 00:50–01:10: quality 0.3M45 01:10–01:30: quality 0.4M45 01:30–02:30: quality 0.5M45 02:30–04:05: quality 0.6M45 04:05–05:15: quality 0.7M45 05:15–05:50: quality 0.4M45 05:50–06:25: quality 0.1observe M45 03:00–04:30observe M45 05:15–05:45NGC 7000NGC 7000 20:25–21:00: quality 0.1NGC 7000 21:00–21:35: quality 0.3NGC 7000 21:35–21:40: quality 0.7NGC 7000 21:40–01:25: quality 0.6NGC 7000 01:25–01:55: quality 0.5NGC 7000 01:55–02:25: quality 0.6NGC 7000 02:25–05:15: quality 0.5NGC 7000 05:15–05:25: quality 0.3NGC 7000 05:25–05:50: quality 0.2NGC 7000 05:50–06:10: quality 0.1observe NGC 7000 21:00–22:30V1057 CygV1057 Cyg 20:25–21:00: quality 0.1V1057 Cyg 21:00–21:35: quality 0.3V1057 Cyg 21:35–21:40: quality 0.7V1057 Cyg 21:40–01:20: quality 0.6V1057 Cyg 01:20–02:05: quality 0.5V1057 Cyg 02:05–02:25: quality 0.6V1057 Cyg 02:25–05:15: quality 0.5V1057 Cyg 05:15–05:25: quality 0.3V1057 Cyg 05:25–05:50: quality 0.2V1057 Cyg 05:50–06:10: quality 0.1observe V1057 Cyg 22:30–00:00M33M33 22:15–22:45: quality 0.3M33 22:45–23:25: quality 0.4M33 23:25–03:55: quality 0.5M33 03:55–05:15: quality 0.6M33 05:15–05:50: quality 0.3M33 05:50–06:25: quality 0.1observe M33 01:30–03:00scheduleNGC 7000V1057 CygM31M33M45M4220:0022:0000:0002:0004:0006:00

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
19:50–21:00 — nothing worth pointing at — 1.17
21:00–22:30 NGC 7000 1.5 0.52
22:30–00:00 V1057 Cyg 1.5 0.59
00:00–01:30 M31 1.5 0.53
01:30–03:00 M33 1.5 0.52
03:00–04:30 M45 1.5 0.63
04:30–05:15 M42 0.75 0.46
05:15–05:45 M45 0.5 0.36
05:45–05:50 M42 0.08 0.33
05:50–06:50 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 61 unknown 05:05–05:15 (good) 89.6° at 03:20 57.9° 1.5
M42 Great Orion Nebula 9 unknown 04:25–05:15 (marginal) 42.9° at 08:10 97.3° 0.83
M45 Seven Sisters 49 unknown 03:20–05:15 (good) 72.5° at 06:20 78.3° 2.0
NGC 7000 North America Nebula 65 unknown 21:35–22:55 (good) 87.2° at 23:35 62.5° 1.5
V1057 Cyg 65 unknown 21:35–22:55 (good) 87.3° at 23:35 62.4° 1.5
M33 Triangulum Pinwheel 55 unknown 22:30–05:50 (marginal) 79.2° at 04:10 56.1° 1.5
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2039-09-02"

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"}.