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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, 18 February 2041 · astronomical night 19:31 → 05:37 (10.11 h) · Moon 93% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:30–19:00: quality 0.1M31 19:00–19:20: quality 0.5M31 19:20–19:35: quality 0.4M31 19:35–20:00: quality 0.9M31 20:00–20:35: quality 0.8M31 20:35–21:00: quality 0.7M31 21:00–21:20: quality 0.6M31 21:20–21:35: quality 0.5M31 21:35–21:55: quality 0.4observe M31 21:10–21:55M42M42 18:30–19:00: quality 0.1M42 19:00–19:35: quality 0.4M42 19:35–20:25: quality 0.9M42 20:25–20:40: quality 0.8M42 20:40–22:35: quality 0.7M42 22:35–23:05: quality 0.6M42 23:05–23:25: quality 0.5M42 23:25–23:45: quality 0.4M42 23:45–23:50: quality 0.3observe M42 21:55–23:00M45M45 18:30–19:00: quality 0.2M45 19:00–19:35: quality 0.5M45 19:35–20:25: quality 1.0M45 20:25–21:15: quality 0.9M45 21:15–22:30: quality 0.8M45 22:30–23:05: quality 0.7M45 23:05–23:20: quality 0.6M45 23:20–23:35: quality 0.5M45 23:35–23:50: quality 0.4observe M45 20:05–21:10observe M45 23:00–23:50NGC 7000NGC 7000 04:30–04:35: quality 0.3NGC 7000 04:35–04:55: quality 0.4NGC 7000 04:55–05:15: quality 0.5NGC 7000 05:15–05:35: quality 0.6NGC 7000 05:35–05:40: quality 0.7NGC 7000 05:40–05:50: quality 0.3NGC 7000 05:50–06:10: quality 0.4NGC 7000 06:10–06:45: quality 0.1observe NGC 7000 04:30–05:35V1057 CygV1057 Cyg 04:35–04:55: quality 0.4V1057 Cyg 04:55–05:15: quality 0.5V1057 Cyg 05:15–05:35: quality 0.6V1057 Cyg 05:35–05:40: quality 0.7V1057 Cyg 05:40–05:45: quality 0.3V1057 Cyg 05:45–06:10: quality 0.4V1057 Cyg 06:10–06:45: quality 0.1observe V1057 Cyg 05:35–06:10M33M33 18:30–19:00: quality 0.1M33 19:00–19:35: quality 0.5M33 19:35–20:25: quality 0.9M33 20:25–20:55: quality 0.8M33 20:55–21:20: quality 0.7M33 21:20–21:35: quality 0.6M33 21:35–21:50: quality 0.5M33 21:50–22:05: quality 0.4observe M33 19:00–20:05scheduleM33M45M31M42M45NGC 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
19:00–20:05 M33 1.08 0.66
20:05–21:10 M45 1.08 0.92
21:10–21:55 M31 0.75 0.47
21:55–23:00 M42 1.08 0.65
23:00–23:50 M45 0.83 0.53
23:50–04:30 — nothing worth pointing at — 4.67
04:30–05:35 NGC 7000 1.08 0.49
05:35–06:10 V1057 Cyg 0.58 0.4
06:10–07:15 — nothing worth pointing at — 1.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 42 unknown 19:35–21:10 (good) 89.8° at 15:10 135.6° 0.75
M42 Great Orion Nebula 72 unknown 19:35–22:55 (good) 42.9° at 20:00 99.5° 1.08
M45 Seven Sisters 93 unknown 19:35–23:15 (good) 72.5° at 18:15 121.6° 1.92
NGC 7000 North America Nebula 14 unknown 05:25–05:40 (good) 87.2° at 11:20 116.2° 1.08
V1057 Cyg 14 unknown 05:25–05:40 (good) 87.2° at 11:25 116.3° 0.58
M33 Triangulum Pinwheel 48 unknown 19:35–21:25 (good) 79.2° at 16:00 141.5° 1.08
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2041-02-18"

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"}.