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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 Sunday, 17 February 2041 · astronomical night 19:30 → 05:39 (10.15 h) · Moon 97% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:30–19:00: quality 0.1M31 19:00–19:25: quality 0.5M31 19:25–19:35: quality 0.4M31 19:35–20:25: quality 0.8M31 20:25–21:05: quality 0.7M31 21:05–21:20: quality 0.6M31 21:20–21:40: quality 0.5M31 21:40–21:55: quality 0.4observe M31 20:10–21:20M42M42 18:30–19:00: quality 0.1M42 19:00–19:35: quality 0.4M42 19:35–21:25: quality 0.7M42 21:25–22:55: quality 0.6M42 22:55–23:20: quality 0.5M42 23:20–23:40: quality 0.4M42 23:40–23:55: quality 0.3observe M42 22:30–23:50M45M45 18:30–19:00: quality 0.2M45 19:00–19:25: quality 0.5M45 19:25–19:35: quality 0.4M45 19:35–20:30: quality 0.9M45 20:30–21:45: quality 0.8M45 21:45–23:00: quality 0.7M45 23:00–23:20: quality 0.6M45 23:20–23:35: quality 0.5M45 23:35–23:50: quality 0.4M45 23:50–23:55: quality 0.3observe M45 21:20–22:30observe M45 23:50–23:55NGC 7000NGC 7000 04:35–04:40: quality 0.3NGC 7000 04:40–05:00: quality 0.4NGC 7000 05:00–05:15: quality 0.5NGC 7000 05:15–05:35: quality 0.6NGC 7000 05:35–05:40: quality 0.7NGC 7000 05:40–05:45: quality 0.3NGC 7000 05:45–06:15: quality 0.4NGC 7000 06:15–06:45: quality 0.1observe NGC 7000 04:35–05:45V1057 CygV1057 Cyg 04:35–04:40: quality 0.3V1057 Cyg 04:40–05:00: quality 0.4V1057 Cyg 05:00–05:20: quality 0.5V1057 Cyg 05:20–05:35: quality 0.6V1057 Cyg 05:35–05:40: quality 0.7V1057 Cyg 05:40–05:45: quality 0.3V1057 Cyg 05:45–06:15: quality 0.4V1057 Cyg 06:15–06:45: quality 0.1observe V1057 Cyg 05:45–06:15M33M33 18:30–19:00: quality 0.1M33 19:00–19:25: quality 0.5M33 19:25–19:35: quality 0.4M33 19:35–20:45: quality 0.8M33 20:45–21:20: 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 19:00–20:10scheduleM33M31M45M42NGC 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 M33 1.17 0.64
20:10–21:20 M31 1.17 0.7
21:20–22:30 M45 1.17 0.74
22:30–23:50 M42 1.33 0.47
23:50–23:55 M45 0.08 0.34
23:55–04:35 — nothing worth pointing at — 4.67
04:35–05:45 NGC 7000 1.17 0.49
05:45–06:15 V1057 Cyg 0.5 0.36
06:15–07:15 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 38 unknown 19:35–21:10 (good) 89.8° at 15:15 127.9° 1.17
M42 Great Orion Nebula 52 unknown 19:35–22:15 (good) 42.9° at 20:05 89.3° 1.33
M45 Seven Sisters 77 unknown 19:35–23:10 (good) 72.5° at 18:20 109.6° 1.25
NGC 7000 North America Nebula 13 unknown 05:25–05:40 (good) 87.2° at 11:25 117.7° 1.17
V1057 Cyg 13 unknown 05:25–05:40 (good) 87.3° at 11:25 117.7° 0.5
M33 Triangulum Pinwheel 43 unknown 19:35–21:30 (good) 79.2° at 16:05 131.2° 1.17
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2041-02-17"

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"}.