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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 Wednesday, 04 September 2047 · astronomical night 21:27 → 05:13 (7.77 h) · Moon 100% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 20:55–21:30: quality 0.2M31 21:30–04:00: quality 0.4M31 04:00–05:15: quality 0.5M31 05:15–05:50: quality 0.3M31 05:50–06:25: quality 0.1observe M31 00:10–01:35M42M42 04:15–04:25: quality 0.3M42 04:25–04:50: 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 04:25–05:15observe M42 05:45–05:50M45M45 00:40–00:45: quality 0.2M45 00:45–01:10: quality 0.3M45 01:10–01:40: quality 0.4M45 01:40–03:35: quality 0.5M45 03:35–05:15: quality 0.6M45 05:15–05:50: quality 0.3M45 05:50–06:25: quality 0.1observe M45 01:35–03:00observe M45 05:15–05:45NGC 7000NGC 7000 20:20–20:55: quality 0.1NGC 7000 20:55–21:30: quality 0.3NGC 7000 21:30–22:05: quality 0.6NGC 7000 22:05–02:25: quality 0.5NGC 7000 02:25–05:15: quality 0.4NGC 7000 05:15–05:50: quality 0.2observe NGC 7000 20:55–21:05observe NGC 7000 21:30–22:45V1057 CygV1057 Cyg 20:20–20:55: quality 0.1V1057 Cyg 20:55–21:30: quality 0.3V1057 Cyg 21:30–22:05: quality 0.6V1057 Cyg 22:05–02:25: quality 0.5V1057 Cyg 02:25–05:15: quality 0.4V1057 Cyg 05:15–05:50: quality 0.2observe V1057 Cyg 22:45–00:10M33M33 22:05–22:20: quality 0.2M33 22:20–22:55: quality 0.3M33 22:55–04:05: quality 0.4M33 04:05–05:15: quality 0.5M33 05:15–05:50: quality 0.3M33 05:50–06:25: quality 0.1observe M33 03:00–04:25scheduleNGC 7000V1057 CygM31M45M33M4220:0022:0000:0002:0004:0006:00

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
19:45–20:55 — nothing worth pointing at — 1.17
20:55–21:05 NGC 7000 0.17 0.3
21:05–21:30 — nothing worth pointing at — 0.42
21:30–22:45 NGC 7000 1.25 0.55
22:45–00:10 V1057 Cyg 1.42 0.49
00:10–01:35 M31 1.42 0.41
01:35–03:00 M45 1.42 0.48
03:00–04:25 M33 1.42 0.44
04:25–05:15 M42 0.83 0.46
05:15–05:45 M45 0.5 0.32
05:45–05:50 M42 0.08 0.32
05:50–06:55 — nothing worth pointing at — 1.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 46 unknown 21:30–05:15 (marginal) 89.8° at 03:10 46.3° 1.42
M42 Great Orion Nebula 10 unknown 04:15–05:15 (marginal) 42.9° at 08:00 95.8° 0.92
M45 Seven Sisters 40 unknown 04:20–05:15 (good) 72.6° at 06:15 70.7° 1.92
NGC 7000 North America Nebula 58 unknown 21:30–05:15 (marginal) 87.2° at 23:25 53.4° 1.42
V1057 Cyg 58 unknown 21:30–05:15 (marginal) 87.2° at 23:25 53.4° 1.42
M33 Triangulum Pinwheel 38 unknown 22:35–05:15 (marginal) 79.2° at 04:00 45.7° 1.42
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2047-09-04"

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"}.