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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 Thursday, 01 September 2039 · astronomical night 21:33 → 05:09 (7.6 h) · Moon 99% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 21:00–21:35: quality 0.2M31 21:35–23:05: quality 0.5M31 23:05–03:40: quality 0.6M31 03:40–05:10: quality 0.7M31 05:10–05:50: quality 0.4M31 05:50–05:55: quality 0.1M31 05:55–06:05: quality 0.2M31 06:05–06:20: quality 0.1observe M31 00:00–01:30M42M42 04:30–04:45: quality 0.4M42 04:45–05:05: quality 0.5M42 05:05–05:10: quality 0.6M42 05:10–05:35: quality 0.3M42 05:35–05:50: quality 0.4M42 05:50–06:20: quality 0.1observe M42 04:30–05:10observe M42 05:40–05:50M45M45 00:50–01:05: quality 0.3M45 01:05–01:20: quality 0.4M45 01:20–01:40: quality 0.5M45 01:40–02:45: quality 0.6M45 02:45–04:05: quality 0.7M45 04:05–05:10: quality 0.8M45 05:10–05:50: quality 0.4M45 05:50–05:55: quality 0.1M45 05:55–06:20: quality 0.2observe M45 03:00–04:30observe M45 05:10–05:40NGC 7000NGC 7000 20:25–21:00: quality 0.1NGC 7000 21:00–21:35: quality 0.3NGC 7000 21:35–05:10: quality 0.6NGC 7000 05:10–05:40: quality 0.3NGC 7000 05:40–05:50: quality 0.2NGC 7000 05:50–06:20: 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 21:35–05:10: quality 0.6V1057 Cyg 05:10–05:40: quality 0.3V1057 Cyg 05:40–05:50: quality 0.2V1057 Cyg 05:50–06:20: quality 0.1observe V1057 Cyg 22:30–00:00M33M33 22:15–22:40: quality 0.3M33 22:40–23:00: quality 0.4M33 23:00–00:40: quality 0.5M33 00:40–03:35: quality 0.6M33 03:35–05:10: quality 0.7M33 05:10–05:50: quality 0.4M33 05:50–05:55: quality 0.1M33 05:55–06:20: quality 0.2observe 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 0.51
22:30–00:00 V1057 Cyg 1.5 0.59
00:00–01:30 M31 1.5 0.6
01:30–03:00 M33 1.5 0.62
03:00–04:30 M45 1.5 0.72
04:30–05:10 M42 0.67 0.47
05:10–05:40 M45 0.5 0.4
05:40–05:50 M42 0.17 0.36
05:50–06:50 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 70 unknown 00:35–05:10 (good) 89.6° at 03:20 68.0° 1.5
M42 Great Orion Nebula 8 unknown 04:30–05:10 (marginal) 42.9° at 08:15 109.2° 0.83
M45 Seven Sisters 63 unknown 02:00–05:10 (good) 72.5° at 06:25 92.0° 2.0
NGC 7000 North America Nebula 64 unknown 21:35–22:55 (good) 87.2° at 23:40 62.9° 1.5
V1057 Cyg 64 unknown 21:35–22:55 (good) 87.3° at 23:40 62.8° 1.5
M33 Triangulum Pinwheel 71 unknown 01:40–05:10 (good) 79.2° at 04:15 68.4° 1.5

💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2039-09-01"

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"}.