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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, 23 February 2037 · astronomical night 19:36 → 05:30 (9.9 h) · Moon 57% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:35–19:05: quality 0.1M31 19:05–19:40: quality 0.3M31 19:40–20:20: quality 0.6M31 20:20–20:50: quality 0.5M31 20:50–21:15: quality 0.4M31 21:15–21:35: quality 0.3observe M31 19:40–20:40M42M42 18:35–19:05: quality 0.1M42 19:05–19:15: quality 0.2M42 19:15–19:40: quality 0.3M42 19:40–22:45: quality 0.5M42 22:45–23:10: quality 0.4M42 23:10–23:30: quality 0.3observe M42 22:35–23:25M45M45 18:35–19:05: quality 0.1M45 19:05–19:40: quality 0.3M45 19:40–20:45: quality 0.6M45 20:45–22:50: quality 0.5M45 22:50–23:15: quality 0.4M45 23:15–23:30: quality 0.3observe M45 21:35–22:35NGC 7000NGC 7000 04:15–04:20: quality 0.4NGC 7000 04:20–04:40: quality 0.5NGC 7000 04:40–04:55: quality 0.6NGC 7000 04:55–05:15: quality 0.7NGC 7000 05:15–05:35: quality 0.8NGC 7000 05:35–06:05: quality 0.4NGC 7000 06:05–06:40: quality 0.1observe NGC 7000 04:15–05:15V1057 CygV1057 Cyg 04:15–04:20: quality 0.4V1057 Cyg 04:20–04:40: quality 0.5V1057 Cyg 04:40–04:55: quality 0.6V1057 Cyg 04:55–05:15: quality 0.7V1057 Cyg 05:15–05:35: quality 0.8V1057 Cyg 05:35–06:05: quality 0.4V1057 Cyg 06:05–06:40: quality 0.1observe V1057 Cyg 05:15–06:05M33M33 18:35–19:05: quality 0.1M33 19:05–19:40: quality 0.3M33 19:40–19:50: quality 0.6M33 19:50–21:00: quality 0.5M33 21:00–21:25: quality 0.4M33 21:25–21:45: quality 0.3observe M33 20:40–21:35scheduleM31M33M45M42NGC 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
18:00–19:40 — nothing worth pointing at — 1.67
19:40–20:40 M31 1.0 0.55
20:40–21:35 M33 0.92 0.42
21:35–22:35 M45 1.0 0.52
22:35–23:25 M42 0.83 0.39
23:25–04:15 — nothing worth pointing at — 4.83
04:15–05:15 NGC 7000 1.0 0.59
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 16 unknown 19:40–21:30 (marginal) 89.7° at 14:50 57.3° 1.0
M42 Great Orion Nebula 26 unknown 19:40–23:25 (marginal) 42.9° at 19:40 26.0° 0.83
M45 Seven Sisters 31 unknown 19:40–23:25 (marginal) 72.5° at 17:55 16.2° 1.0
NGC 7000 North America Nebula 23 unknown 04:50–05:35 (good) 87.2° at 11:05 95.8° 1.0
V1057 Cyg 23 unknown 04:50–05:35 (good) 87.3° at 11:05 95.9° 0.83
M33 Triangulum Pinwheel 16 unknown 19:40–21:35 (marginal) 79.2° at 15:40 46.2° 0.92
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2037-02-23"

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"}.