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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, 17 September 2043 · astronomical night 21:01 → 05:29 (8.47 h) · Moon 98% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 20:00–20:30: quality 0.1M31 20:30–21:05: quality 0.2M31 21:05–02:35: quality 0.5M31 02:35–05:00: quality 0.6M31 05:00–05:30: quality 0.7M31 05:30–06:00: quality 0.3M31 06:00–06:05: quality 0.5M31 06:05–06:40: quality 0.1observe M31 23:50–01:30M42M42 03:25–03:30: quality 0.3M42 03:30–03:50: quality 0.4M42 03:50–04:10: quality 0.5M42 04:10–04:30: quality 0.6M42 04:30–05:30: quality 0.7M42 05:30–06:05: quality 0.4M42 06:05–06:40: quality 0.1observe M42 04:50–06:05M45M45 23:50–00:10: quality 0.3M45 00:10–00:30: quality 0.4M45 00:30–01:20: quality 0.5M45 01:20–02:55: quality 0.6M45 02:55–05:10: quality 0.7M45 05:10–05:30: quality 0.8M45 05:30–06:00: quality 0.4M45 06:00–06:05: quality 0.5M45 06:05–06:40: quality 0.2observe M45 01:30–03:10NGC 7000NGC 7000 20:00–20:30: quality 0.1NGC 7000 20:30–21:05: quality 0.3NGC 7000 21:05–22:50: quality 0.6NGC 7000 22:50–04:40: quality 0.5NGC 7000 04:40–05:10: quality 0.4NGC 7000 05:10–05:30: quality 0.3observe NGC 7000 20:30–22:10V1057 CygV1057 Cyg 20:00–20:30: quality 0.1V1057 Cyg 20:30–21:05: quality 0.3V1057 Cyg 21:05–22:45: quality 0.6V1057 Cyg 22:45–04:40: quality 0.5V1057 Cyg 04:40–05:05: quality 0.4V1057 Cyg 05:05–05:30: quality 0.3observe V1057 Cyg 22:10–23:50M33M33 21:15–21:20: quality 0.2M33 21:20–21:45: quality 0.3M33 21:45–22:45: quality 0.4M33 22:45–02:45: quality 0.5M33 02:45–05:05: quality 0.6M33 05:05–05:30: quality 0.7M33 05:30–06:00: quality 0.3M33 06:00–06:05: quality 0.5M33 06:05–06:40: quality 0.1observe M33 03:10–04:50scheduleNGC 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
19:25–20:30 — nothing worth pointing at — 1.08
20:30–22:10 NGC 7000 1.67 0.49
22:10–23:50 V1057 Cyg 1.67 0.55
23:50–01:30 M31 1.67 0.52
01:30–03:10 M45 1.67 0.61
03:10–04:50 M33 1.67 0.6
04:50–06:05 M42 1.25 0.54
06:05–07:05 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 65 unknown 04:00–05:30 (good) 89.7° at 02:20 57.1° 1.67
M42 Great Orion Nebula 27 unknown 04:20–05:30 (good) 42.9° at 07:10 100.5° 1.25
M45 Seven Sisters 72 unknown 02:10–05:30 (good) 72.5° at 05:20 79.9° 1.67
NGC 7000 North America Nebula 60 unknown 21:05–21:15 (good) 87.2° at 22:35 59.3° 1.67
V1057 Cyg 60 unknown 21:05–21:15 (good) 87.3° at 22:35 59.2° 1.67
M33 Triangulum Pinwheel 67 unknown 04:00–05:30 (good) 79.2° at 03:10 56.4° 1.67
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2043-09-17"

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"}.