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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 Sunday, 16 November 2025 · astronomical night 18:36 → 05:35 (10.99 h) · Moon 10% (waning crescent) · weather: ERA5 history

M31M31 17:30–18:05: quality 0.1M31 18:05–18:40: quality 0.4M31 18:40–19:00: quality 0.9M31 19:00–21:00: quality 0.6M31 21:00–22:00: quality 0.2M31 23:00–00:00: quality 0.5M31 01:00–02:00: quality 0.3observe M31 19:55–20:50M42M42 23:00–23:10: quality 0.3M42 23:10–00:00: quality 0.4M42 01:00–02:00: quality 0.3M42 05:00–05:10: quality 0.4M42 05:10–05:40: quality 0.3M42 05:40–06:00: quality 0.1observe M42 05:00–05:30M45M45 18:50–19:00: quality 0.4M45 19:00–19:20: quality 0.3M45 19:20–19:40: quality 0.4M45 19:40–21:00: quality 0.5M45 21:00–22:00: quality 0.2M45 23:00–00:00: quality 0.5M45 01:00–02:00: quality 0.3M45 05:00–05:20: quality 0.4M45 05:20–05:40: quality 0.3M45 05:40–06:00: quality 0.1observe M45 23:45–00:00observe M45 01:00–01:40observe M45 01:55–02:00NGC 7000NGC 7000 17:30–18:00: quality 0.2NGC 7000 18:00–18:05: quality 0.1NGC 7000 18:05–18:40: quality 0.4NGC 7000 18:40–19:00: quality 0.9NGC 7000 19:00–20:35: quality 0.6NGC 7000 20:35–21:00: quality 0.5NGC 7000 21:00–22:00: quality 0.2NGC 7000 23:00–23:45: quality 0.4NGC 7000 23:45–00:00: quality 0.3observe NGC 7000 18:05–19:00V1057 CygV1057 Cyg 17:30–18:00: quality 0.2V1057 Cyg 18:00–18:05: quality 0.1V1057 Cyg 18:05–18:40: quality 0.4V1057 Cyg 18:40–19:00: quality 0.9V1057 Cyg 19:00–20:35: quality 0.6V1057 Cyg 20:35–21:00: quality 0.5V1057 Cyg 21:00–22:00: quality 0.2V1057 Cyg 23:00–23:45: quality 0.4V1057 Cyg 23:45–00:00: quality 0.3observe V1057 Cyg 19:00–19:55M33M33 17:30–18:05: quality 0.1M33 18:05–18:40: quality 0.4M33 18:40–19:00: quality 0.8M33 19:00–21:00: quality 0.6M33 21:00–22:00: quality 0.2M33 23:00–00:00: quality 0.5M33 01:00–02:00: quality 0.3observe M33 20:50–21:00observe M33 23:00–23:45observe M33 01:40–01:55scheduleNGC 7000V1057 CygM3118:0020:0022:0000:0002:0004:0006:00

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
16:55–18:05 — nothing worth pointing at — 1.17
18:05–19:00 NGC 7000 0.92 0.61
19:00–19:55 V1057 Cyg 0.92 0.59
19:55–20:50 M31 0.92 0.56
20:50–21:00 M33 0.17 0.56
21:00–23:00 — nothing worth pointing at — 2.0
23:00–23:45 M33 0.75 0.52
23:45–00:00 M45 0.25 0.52
00:00–01:00 — nothing worth pointing at — 1.0
01:00–01:40 M45 0.67 0.33
01:40–01:55 M33 0.25 0.3
01:55–02:00 M45 0.08 0.33
02:00–05:00 — nothing worth pointing at — 3.0
05:00–05:30 M42 0.5 0.34
05:30–07:15 — nothing worth pointing at — 1.75

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 32 18:40–19:00 (good) 89.7° at 21:20 148.1° 0.92
M42 Great Orion Nebula 89 14 23:00–00:00 (marginal) 42.9° at 02:10 110.6° 0.5
M45 Seven Sisters 100 23 19:05–21:00 (marginal) 72.5° at 00:25 138.6° 1.0
NGC 7000 North America Nebula 100 44 18:40–19:00 (good) 87.2° at 17:35 117.3° 0.92
V1057 Cyg 100 44 18:40–19:00 (good) 87.3° at 17:35 117.3° 0.92
M33 Triangulum Pinwheel 100 30 18:40–19:00 (good) 79.1° at 22:10 157.8° 1.17
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2025-11-16"

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"}.