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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 Monday, 16 February 2043 · astronomical night 19:28 → 05:41 (10.21 h) · Moon 53% (first quarter) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:25–19:00: quality 0.1M31 19:00–19:30: quality 0.3M31 19:30–20:20: quality 0.6M31 20:20–21:20: quality 0.5M31 21:20–21:45: quality 0.4M31 21:45–22:05: quality 0.3observe M31 19:30–20:35M42M42 18:25–19:00: quality 0.1M42 19:00–19:30: quality 0.3M42 19:30–23:00: quality 0.6M42 23:00–23:25: quality 0.5M42 23:25–23:50: quality 0.4M42 23:50–00:00: quality 0.3observe M42 22:45–00:00M45M45 18:25–19:00: quality 0.1M45 19:00–19:30: quality 0.3M45 19:30–23:05: quality 0.6M45 23:05–23:30: quality 0.5M45 23:30–23:50: quality 0.4M45 23:50–00:00: quality 0.3observe M45 21:40–22:45NGC 7000NGC 7000 04:40–04:50: quality 0.4NGC 7000 04:50–05:10: quality 0.5NGC 7000 05:10–05:25: quality 0.6NGC 7000 05:25–05:40: quality 0.7NGC 7000 05:40–05:45: quality 0.8NGC 7000 05:45–06:15: quality 0.4NGC 7000 06:15–06:50: quality 0.1observe NGC 7000 04:40–05:45V1057 CygV1057 Cyg 04:40–04:50: quality 0.4V1057 Cyg 04:50–05:10: quality 0.5V1057 Cyg 05:10–05:25: quality 0.6V1057 Cyg 05:25–05:45: quality 0.7V1057 Cyg 05:45–06:15: quality 0.4V1057 Cyg 06:15–06:50: quality 0.1observe V1057 Cyg 05:45–06:15M33M33 18:25–19:00: quality 0.1M33 19:00–19:30: quality 0.3M33 19:30–19:45: quality 0.6M33 19:45–21:30: quality 0.5M33 21:30–21:55: quality 0.4M33 21:55–22:15: quality 0.3observe M33 20:35–21:40scheduleM31M33M45M42NGC 700018:0020:0022:0000:0002:0004:0006:00

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
17:55–19:30 — nothing worth pointing at — 1.58
19:30–20:35 M31 1.08 0.56
20:35–21:40 M33 1.08 0.49
21:40–22:45 M45 1.08 0.57
22:45–00:00 M42 1.25 0.46
00:00–04:40 — nothing worth pointing at — 4.67
04:40–05:45 NGC 7000 1.08 0.57
05:45–06:15 V1057 Cyg 0.5 0.4
06:15–07:15 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 21 unknown 19:30–21:55 (marginal) 89.8° at 15:20 42.7° 1.08
M42 Great Orion Nebula 38 unknown 19:30–00:00 (marginal) 42.9° at 20:10 38.9° 1.25
M45 Seven Sisters 41 unknown 19:40–20:55 (good) 72.6° at 18:25 1.4° 1.08
NGC 7000 North America Nebula 17 unknown 05:15–05:45 (good) 87.2° at 11:30 82.1° 1.08
V1057 Cyg 17 unknown 05:15–05:45 (good) 87.2° at 11:30 82.1° 0.5
M33 Triangulum Pinwheel 21 unknown 19:30–22:05 (marginal) 79.2° at 16:10 31.2° 1.08
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2043-02-16"

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"}.