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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 Tuesday, 12 February 2030 · astronomical night 19:24 → 05:45 (10.36 h) · Moon 72% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:20–18:55: quality 0.1M31 18:55–19:25: quality 0.3M31 19:25–21:20: quality 0.5M31 21:20–21:45: quality 0.4M31 21:45–22:15: quality 0.3observe M31 19:25–20:25M42M42 18:20–18:55: quality 0.1M42 18:55–19:25: quality 0.2M42 19:25–23:30: quality 0.4M42 23:30–00:05: quality 0.3M42 00:05–00:15: quality 0.2observe M42 22:25–23:50M45M45 18:20–18:55: quality 0.1M45 18:55–19:25: quality 0.2M45 19:25–23:40: quality 0.4M45 23:40–00:05: quality 0.3M45 00:05–00:15: quality 0.2observe M45 21:25–22:25observe M45 23:50–23:55NGC 7000NGC 7000 18:20–18:40: quality 0.1NGC 7000 04:55–05:05: quality 0.4NGC 7000 05:05–05:25: quality 0.5NGC 7000 05:25–05:40: quality 0.6NGC 7000 05:40–05:50: quality 0.7NGC 7000 05:50–06:20: quality 0.4NGC 7000 06:20–06:55: quality 0.1observe NGC 7000 04:55–05:55V1057 CygV1057 Cyg 18:20–18:40: quality 0.1V1057 Cyg 04:55–05:05: quality 0.4V1057 Cyg 05:05–05:25: quality 0.5V1057 Cyg 05:25–05:40: quality 0.6V1057 Cyg 05:40–05:50: quality 0.7V1057 Cyg 05:50–06:20: quality 0.4V1057 Cyg 06:20–06:55: quality 0.1observe V1057 Cyg 05:55–06:20M33M33 18:20–18:55: quality 0.1M33 18:55–19:25: quality 0.3M33 19:25–21:10: quality 0.5M33 21:10–21:55: quality 0.4M33 21:55–22:20: quality 0.3M33 22:20–22:25: quality 0.2observe M33 20:25–21:25scheduleM31M33M45M42NGC 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
17:50–19:25 — nothing worth pointing at — 1.58
19:25–20:25 M31 1.0 0.52
20:25–21:25 M33 1.0 0.46
21:25–22:25 M45 1.0 0.42
22:25–23:50 M42 1.42 0.38
23:50–23:55 M45 0.08 0.3
23:55–04:55 — nothing worth pointing at — 5.0
04:55–05:55 NGC 7000 1.0 0.53
05:55–06:20 V1057 Cyg 0.42 0.4
06:20–07:20 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 20 unknown 19:25–22:00 (marginal) 89.7° at 15:35 59.7° 1.0
M42 Great Orion Nebula 19 unknown 19:25–23:50 (marginal) 42.9° at 20:25 29.0° 1.42
M45 Seven Sisters 23 unknown 19:25–23:55 (marginal) 72.5° at 18:40 21.5° 1.08
NGC 7000 North America Nebula 14 unknown 05:30–05:50 (good) 87.2° at 11:45 95.9° 1.0
V1057 Cyg 14 unknown 05:30–05:50 (good) 87.3° at 11:45 95.9° 0.42
M33 Triangulum Pinwheel 19 unknown 19:25–22:05 (marginal) 79.1° at 16:25 50.5° 1.0
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2030-02-12"

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"}.