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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 Thursday, 11 February 2027 · astronomical night 19:22 → 05:47 (10.41 h) · Moon 25% (waxing crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:20–18:55: quality 0.1M31 18:55–19:25: quality 0.4M31 19:25–20:00: quality 0.8M31 20:00–21:25: quality 0.7M31 21:25–21:45: quality 0.6M31 21:45–22:05: quality 0.5M31 22:05–22:20: quality 0.4observe M31 21:15–22:10M42M42 18:20–18:55: quality 0.1M42 18:55–19:25: quality 0.4M42 19:25–23:25: quality 0.8M42 23:25–23:40: quality 0.7M42 23:40–00:00: quality 0.6M42 00:00–00:15: quality 0.5M42 00:15–00:20: quality 0.4observe M42 22:10–00:20M45M45 18:20–18:55: quality 0.1M45 18:55–19:25: quality 0.4M45 19:25–19:40: quality 0.8M45 19:40–21:05: quality 0.9M45 21:05–23:35: quality 0.8M45 23:35–23:45: quality 0.7M45 23:45–00:00: quality 0.6M45 00:00–00:15: quality 0.5M45 00:15–00:20: quality 0.4observe M45 20:05–21:15NGC 7000NGC 7000 18:20–18:50: quality 0.1NGC 7000 05:00–05:10: quality 0.4NGC 7000 05:10–05:30: quality 0.5NGC 7000 05:30–05:45: quality 0.6NGC 7000 05:45–05:50: quality 0.7NGC 7000 05:50–05:55: quality 0.3NGC 7000 05:55–06:20: quality 0.4NGC 7000 06:20–06:55: quality 0.1observe NGC 7000 05:00–06:10V1057 CygV1057 Cyg 18:20–18:50: quality 0.1V1057 Cyg 05:00–05:10: quality 0.4V1057 Cyg 05:10–05:30: quality 0.5V1057 Cyg 05:30–05:45: quality 0.6V1057 Cyg 05:45–05:50: quality 0.7V1057 Cyg 05:50–05:55: quality 0.3V1057 Cyg 05:55–06:20: quality 0.4V1057 Cyg 06:20–06:55: quality 0.1observe V1057 Cyg 06:10–06:20M33M33 18:20–18:55: quality 0.1M33 18:55–19:25: quality 0.4M33 19:25–20:30: quality 0.8M33 20:30–21:45: quality 0.7M33 21:45–22:00: quality 0.6M33 22:00–22:15: quality 0.5M33 22:15–22:30: quality 0.4observe M33 18:55–20:05scheduleM33M45M31M42NGC 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
17:45–18:55 — nothing worth pointing at — 1.17
18:55–20:05 M33 1.17 0.62
20:05–21:15 M45 1.17 0.86
21:15–22:10 M31 0.92 0.56
22:10–00:20 M42 2.17 0.7
00:20–05:00 — nothing worth pointing at — 4.67
05:00–06:10 NGC 7000 1.17 0.49
06:10–06:20 V1057 Cyg 0.17 0.4
06:20–07:25 — nothing worth pointing at — 1.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 42 unknown 19:25–21:35 (good) 89.7° at 15:40 28.9° 0.92
M42 Great Orion Nebula 81 unknown 19:25–23:50 (good) 42.9° at 20:30 66.3° 2.17
M45 Seven Sisters 87 unknown 19:25–23:55 (good) 72.5° at 18:45 36.3° 1.17
NGC 7000 North America Nebula 12 unknown 05:35–05:50 (good) 87.2° at 11:50 62.9° 1.17
V1057 Cyg 12 unknown 05:35–05:50 (good) 87.3° at 11:50 62.9° 0.17
M33 Triangulum Pinwheel 48 unknown 19:25–21:50 (good) 79.1° at 16:30 17.5° 1.17
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-02-11"

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"}.