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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, 31 January 2047 · astronomical night 19:10 → 05:58 (10.79 h) · Moon 30% (waxing crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:05–18:40: quality 0.1M31 18:40–19:15: quality 0.4M31 19:15–20:15: quality 0.8M31 20:15–22:05: quality 0.7M31 22:05–22:25: quality 0.6M31 22:25–22:45: quality 0.5M31 22:45–23:05: quality 0.4observe M31 18:40–19:50M42M42 18:05–18:40: quality 0.1M42 18:40–19:15: quality 0.4M42 19:15–19:40: quality 0.7M42 19:40–00:10: quality 0.8M42 00:10–00:25: quality 0.7M42 00:25–00:40: quality 0.6M42 00:40–00:55: quality 0.5M42 00:55–01:05: quality 0.4observe M42 22:10–01:05M45M45 18:05–18:40: quality 0.1M45 18:40–19:15: quality 0.4M45 19:15–21:00: quality 0.8M45 21:00–21:40: quality 0.9M45 21:40–23:15: quality 0.8M45 23:15–23:30: quality 0.9M45 23:30–00:15: quality 0.8M45 00:15–00:30: quality 0.7M45 00:30–00:45: quality 0.6M45 00:45–01:00: quality 0.5M45 01:00–01:05: quality 0.4observe M45 21:00–22:10NGC 7000NGC 7000 18:05–18:40: quality 0.1NGC 7000 18:40–19:00: quality 0.3NGC 7000 19:00–19:15: quality 0.2NGC 7000 19:15–19:35: quality 0.4NGC 7000 05:45–05:55: quality 0.4NGC 7000 05:55–06:00: quality 0.5NGC 7000 06:00–06:05: quality 0.2NGC 7000 06:05–06:35: quality 0.3NGC 7000 06:35–07:05: quality 0.1observe NGC 7000 05:45–06:00observe NGC 7000 06:20–06:35V1057 CygV1057 Cyg 18:05–18:40: quality 0.1V1057 Cyg 18:40–19:00: quality 0.3V1057 Cyg 19:00–19:15: quality 0.2V1057 Cyg 19:15–19:35: quality 0.4V1057 Cyg 05:45–05:55: quality 0.4V1057 Cyg 05:55–06:00: quality 0.5V1057 Cyg 06:00–06:05: quality 0.2V1057 Cyg 06:05–06:35: quality 0.3V1057 Cyg 06:35–07:05: quality 0.1M33M33 18:05–18:40: quality 0.1M33 18:40–19:15: quality 0.4M33 19:15–20:55: quality 0.8M33 20:55–22:25: quality 0.7M33 22:25–22:40: quality 0.6M33 22:40–23:00: quality 0.5M33 23:00–23:15: quality 0.4observe M33 19:50–21:00scheduleM31M33M45M4218:0020:0022:0000:0002:0004:0006:00

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
17:30–18:40 — nothing worth pointing at — 1.17
18:40–19:50 M31 1.17 0.59
19:50–21:00 M33 1.17 0.77
21:00–22:10 M45 1.17 0.85
22:10–01:05 M42 2.92 0.73
01:05–05:45 — nothing worth pointing at — 4.67
05:45–06:00 NGC 7000 0.25 0.44
06:00–06:20 — nothing worth pointing at — 0.33
06:20–06:35 NGC 7000 0.25 0.32
06:35–07:35 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 57 unknown 19:15–22:15 (good) 89.7° at 16:25 29.6° 1.17
M42 Great Orion Nebula 84 unknown 19:15–00:35 (good) 42.9° at 21:15 70.9° 2.92
M45 Seven Sisters 87 unknown 19:15–00:40 (good) 72.6° at 19:25 41.5° 1.17
NGC 7000 North America Nebula 8 unknown 19:15–19:35 (marginal) 87.2° at 12:40 60.4° 0.5
V1057 Cyg 8 unknown 19:15–19:35 (marginal) 87.2° at 12:40 60.3° 0.0
M33 Triangulum Pinwheel 63 unknown 19:15–22:35 (good) 79.2° at 17:15 20.4° 1.17

Left out


💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2047-01-31"

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"}.