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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 Wednesday, 18 February 2037 · astronomical night 19:31 → 05:37 (10.11 h) · Moon 12% (waxing crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:30–19:00: quality 0.1M31 19:00–19:35: quality 0.4M31 19:35–20:50: quality 0.8M31 20:50–21:10: quality 0.7M31 21:10–21:25: quality 0.6M31 21:25–21:45: quality 0.5M31 21:45–21:50: quality 0.4observe M31 20:10–21:20M42M42 18:30–19:00: quality 0.1M42 19:00–19:35: quality 0.4M42 19:35–19:40: quality 0.8M42 19:40–20:55: quality 0.9M42 20:55–21:00: quality 0.8M42 21:00–21:45: quality 0.9M42 21:45–22:55: quality 0.8M42 22:55–23:15: quality 0.7M42 23:15–23:30: quality 0.6M42 23:30–23:45: quality 0.5M42 23:45–23:50: quality 0.4observe M42 21:55–23:50M45M45 18:30–19:00: quality 0.1M45 19:00–19:35: quality 0.5M45 19:35–19:40: quality 0.9M45 19:40–20:20: quality 1.0M45 20:20–22:15: quality 0.9M45 22:15–23:05: quality 0.8M45 23:05–23:20: quality 0.7M45 23:20–23:30: quality 0.6M45 23:30–23:45: quality 0.5M45 23:45–23:50: quality 0.4observe M45 19:00–20:10NGC 7000NGC 7000 04:30–04:40: quality 0.4NGC 7000 04:40–05:00: quality 0.5NGC 7000 05:00–05:15: quality 0.6NGC 7000 05:15–05:30: quality 0.7NGC 7000 05:30–05:40: quality 0.8NGC 7000 05:40–06:15: quality 0.4NGC 7000 06:15–06:45: quality 0.1observe NGC 7000 04:30–05:40V1057 CygV1057 Cyg 04:35–04:40: quality 0.4V1057 Cyg 04:40–05:00: quality 0.5V1057 Cyg 05:00–05:15: quality 0.6V1057 Cyg 05:15–05:35: quality 0.7V1057 Cyg 05:35–05:40: quality 0.8V1057 Cyg 05:40–06:15: quality 0.4V1057 Cyg 06:15–06:45: quality 0.1observe V1057 Cyg 05:40–06:15M33M33 18:30–19:00: quality 0.1M33 19:00–19:35: quality 0.4M33 19:35–19:40: quality 0.9M33 19:40–21:15: quality 0.8M33 21:15–21:25: quality 0.7M33 21:25–21:40: quality 0.6M33 21:40–21:55: quality 0.5M33 21:55–22:05: quality 0.4observe M33 21:20–21:55scheduleM45M31M42NGC 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
17:55–19:00 — nothing worth pointing at — 1.08
19:00–20:10 M45 1.17 0.71
20:10–21:20 M31 1.17 0.74
21:20–21:55 M33 0.58 0.57
21:55–23:50 M42 1.92 0.71
23:50–04:30 — nothing worth pointing at — 4.67
04:30–05:40 NGC 7000 1.17 0.59
05:40–06:15 V1057 Cyg 0.58 0.41
06:15–07:15 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 39 unknown 19:35–21:20 (good) 89.8° at 15:10 41.2° 1.17
M42 Great Orion Nebula 80 unknown 19:35–23:20 (good) 42.9° at 20:00 71.9° 1.92
M45 Seven Sisters 93 unknown 19:35–23:25 (good) 72.5° at 18:15 49.4° 1.17
NGC 7000 North America Nebula 19 unknown 05:05–05:40 (good) 87.2° at 11:20 67.2° 1.17
V1057 Cyg 19 unknown 05:10–05:40 (good) 87.3° at 11:25 67.2° 0.58
M33 Triangulum Pinwheel 46 unknown 19:35–21:35 (good) 79.2° at 16:00 32.5° 0.58
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2037-02-18"

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"}.