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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, 12 November 2025 · astronomical night 18:39 → 05:31 (10.88 h) · Moon 43% (waning crescent) · weather: ERA5 history

M31M31 20:00–21:00: quality 0.7M31 21:00–00:25: quality 1.0M31 00:25–01:45: quality 0.9M31 01:45–03:10: quality 0.8M31 03:10–03:30: quality 0.7M31 03:30–03:45: quality 0.6M31 03:45–04:00: quality 0.5M31 04:00–04:20: quality 0.4observe M31 23:20–01:00M42M42 22:45–22:50: quality 0.4M42 22:50–23:05: quality 0.5M42 23:05–23:20: quality 0.6M42 23:20–23:40: quality 0.7M42 23:40–00:20: quality 0.8M42 00:20–00:55: quality 0.7M42 00:55–02:30: quality 0.8M42 02:30–04:50: quality 0.7M42 04:50–05:30: quality 0.6M42 05:30–05:35: quality 0.5M42 05:35–05:40: quality 0.3M42 05:40–06:05: quality 0.2M42 06:05–06:15: quality 0.1observe M42 04:20–05:35M45M45 20:00–20:30: quality 0.5M45 20:30–21:00: quality 0.6M45 21:00–22:00: quality 0.9M45 22:00–00:20: quality 1.0M45 00:20–03:10: quality 0.9M45 03:10–04:15: quality 0.8M45 04:15–05:25: quality 0.7M45 05:25–05:35: quality 0.6M45 05:35–05:50: quality 0.3M45 05:50–06:05: quality 0.2M45 06:05–06:20: quality 0.1observe M45 02:40–04:20NGC 7000NGC 7000 20:00–20:45: quality 0.7NGC 7000 20:45–21:00: quality 0.6NGC 7000 21:00–21:15: quality 1.0NGC 7000 21:15–22:50: quality 0.9NGC 7000 22:50–23:50: quality 0.8NGC 7000 23:50–00:05: quality 0.7NGC 7000 00:05–00:20: quality 0.6NGC 7000 00:20–00:35: quality 0.5NGC 7000 00:35–00:50: quality 0.4observe NGC 7000 21:40–23:20V1057 CygV1057 Cyg 20:00–20:45: quality 0.7V1057 Cyg 20:45–21:00: quality 0.6V1057 Cyg 21:00–21:15: quality 1.0V1057 Cyg 21:15–22:50: quality 0.9V1057 Cyg 22:50–23:45: quality 0.8V1057 Cyg 23:45–00:05: quality 0.7V1057 Cyg 00:05–00:20: quality 0.6V1057 Cyg 00:20–00:35: quality 0.5V1057 Cyg 00:35–00:45: quality 0.4observe V1057 Cyg 20:00–21:40M33M33 20:00–20:05: quality 0.6M33 20:05–21:00: quality 0.7M33 21:00–00:50: quality 1.0M33 00:50–02:10: quality 0.9M33 02:10–03:30: quality 0.8M33 03:30–03:45: quality 0.7M33 03:45–04:00: quality 0.6M33 04:00–04:15: quality 0.5M33 04:15–04:30: quality 0.4observe M33 01:00–02:40scheduleV1057 CygNGC 7000M31M33M45M4218:0020:0022:0000:0002:0004:0006:00

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
17:00–20:00 — nothing worth pointing at — 3.0
20:00–21:40 V1057 Cyg 1.67 0.77
21:40–23:20 NGC 7000 1.67 0.87
23:20–01:00 M31 1.67 0.97
01:00–02:40 M33 1.67 0.87
02:40–04:20 M45 1.67 0.82
04:20–05:35 M42 1.25 0.63
05:35–07:10 — nothing worth pointing at — 1.58

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 78 20:00–03:40 (good) 89.6° at 21:35 114.7° 1.67
M42 Great Orion Nebula 83 83 23:15–05:20 (good) 42.9° at 02:30 69.9° 1.25
M45 Seven Sisters 100 90 21:00–05:35 (good) 72.5° at 00:40 89.2° 1.67
NGC 7000 North America Nebula 100 65 20:00–00:15 (good) 87.2° at 17:55 120.4° 1.67
V1057 Cyg 100 64 20:00–00:10 (good) 87.3° at 17:55 120.5° 1.67
M33 Triangulum Pinwheel 100 79 20:00–03:55 (good) 79.1° at 22:25 113.7° 1.67
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2025-11-12"

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"}.