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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, 24 February 2031 · astronomical night 19:37 → 05:30 (9.88 h) · Moon 13% (waxing crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:35–19:10: quality 0.1M31 19:10–19:40: quality 0.4M31 19:40–20:25: quality 0.8M31 20:25–20:45: quality 0.7M31 20:45–21:00: quality 0.6M31 21:00–21:20: quality 0.5M31 21:20–21:30: quality 0.4observe M31 20:15–21:05M42M42 18:35–19:10: quality 0.1M42 19:10–19:40: quality 0.4M42 19:40–22:35: quality 0.8M42 22:35–22:50: quality 0.7M42 22:50–23:05: quality 0.6M42 23:05–23:25: quality 0.5M42 23:25–23:30: quality 0.4observe M42 21:35–23:30M45M45 18:35–19:10: quality 0.1M45 19:10–19:40: quality 0.5M45 19:40–21:20: quality 0.9M45 21:20–21:30: quality 0.8M45 21:30–21:55: quality 0.9M45 21:55–22:40: quality 0.8M45 22:40–22:55: quality 0.7M45 22:55–23:10: quality 0.6M45 23:10–23:25: quality 0.5M45 23:25–23:30: quality 0.4observe M45 19:10–20:15NGC 7000NGC 7000 04:10–04:20: quality 0.4NGC 7000 04:20–04:35: quality 0.5NGC 7000 04:35–04:55: quality 0.6NGC 7000 04:55–05:10: quality 0.7NGC 7000 05:10–05:35: quality 0.8NGC 7000 05:35–06:05: quality 0.4NGC 7000 06:05–06:35: quality 0.1observe NGC 7000 04:10–05:15V1057 CygV1057 Cyg 04:10–04:20: quality 0.4V1057 Cyg 04:20–04:40: quality 0.5V1057 Cyg 04:40–04:55: quality 0.6V1057 Cyg 04:55–05:10: quality 0.7V1057 Cyg 05:10–05:35: quality 0.8V1057 Cyg 05:35–06:05: quality 0.4V1057 Cyg 06:05–06:35: quality 0.1observe V1057 Cyg 05:15–06:05M33M33 18:35–19:10: quality 0.1M33 19:10–19:40: quality 0.4M33 19:40–20:45: quality 0.8M33 20:45–21:00: quality 0.7M33 21:00–21:15: quality 0.6M33 21:15–21:35: quality 0.5M33 21:35–21:40: quality 0.4observe M33 21:05–21:35scheduleM45M31M42NGC 7000V1057 Cyg20:0022:0000:0002:0004:0006:00

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
18:05–19:10 — nothing worth pointing at — 1.08
19:10–20:15 M45 1.08 0.72
20:15–21:05 M31 0.83 0.66
21:05–21:35 M33 0.5 0.52
21:35–23:30 M42 1.92 0.7
23:30–04:10 — nothing worth pointing at — 4.67
04:10–05:15 NGC 7000 1.08 0.58
05:15–06:05 V1057 Cyg 0.83 0.57
06:05–07:05 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 29 unknown 19:40–20:50 (good) 89.6° at 14:50 31.2° 0.83
M42 Great Orion Nebula 69 unknown 19:40–23:00 (good) 42.9° at 19:40 70.1° 1.92
M45 Seven Sisters 80 unknown 19:40–23:05 (good) 72.5° at 17:50 41.6° 1.08
NGC 7000 North America Nebula 24 unknown 04:45–05:35 (good) 87.2° at 11:00 61.9° 1.08
V1057 Cyg 24 unknown 04:45–05:35 (good) 87.3° at 11:00 61.9° 0.83
M33 Triangulum Pinwheel 34 unknown 19:40–21:05 (good) 79.1° at 15:40 21.7° 0.5
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2031-02-24"

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"}.