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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, 18 January 2043 · astronomical night 18:56 → 06:06 (11.16 h) · Moon 56% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:50–18:25: quality 0.1M31 18:25–19:00: quality 0.3M31 19:00–22:00: quality 0.6M31 22:00–23:15: quality 0.5M31 23:15–23:40: quality 0.4M31 23:40–23:55: quality 0.3observe M31 22:55–23:45M42M42 18:25–18:30: quality 0.1M42 18:30–19:00: quality 0.2M42 19:00–19:05: quality 0.4M42 19:05–19:45: quality 0.5M42 19:45–23:00: quality 0.6M42 23:00–00:10: quality 0.7M42 00:10–01:10: quality 0.6M42 01:10–01:35: quality 0.5M42 01:35–01:40: quality 0.4M42 01:40–01:50: quality 0.5M42 01:50–01:55: quality 0.4observe M42 23:45–01:55M45M45 17:50–18:25: quality 0.1M45 18:25–19:00: quality 0.3M45 19:00–01:10: quality 0.6M45 01:10–01:30: quality 0.5M45 01:30–01:40: quality 0.4M45 01:40–01:50: quality 0.5M45 01:50–01:55: quality 0.4observe M45 21:40–22:55NGC 7000NGC 7000 17:50–18:25: quality 0.1NGC 7000 18:25–19:00: quality 0.3NGC 7000 19:00–19:25: quality 0.6NGC 7000 19:25–19:50: quality 0.5NGC 7000 19:50–20:10: quality 0.4NGC 7000 20:10–20:25: quality 0.3NGC 7000 06:35–06:40: quality 0.2NGC 7000 06:40–07:15: quality 0.1observe NGC 7000 18:25–18:55observe NGC 7000 19:00–19:45V1057 CygV1057 Cyg 17:50–18:25: quality 0.1V1057 Cyg 18:25–19:00: quality 0.3V1057 Cyg 19:00–19:25: quality 0.6V1057 Cyg 19:25–19:50: quality 0.5V1057 Cyg 19:50–20:10: quality 0.4V1057 Cyg 20:10–20:25: quality 0.3V1057 Cyg 06:35–06:40: quality 0.2V1057 Cyg 06:40–07:15: quality 0.1observe V1057 Cyg 19:45–20:25M33M33 17:50–18:25: quality 0.1M33 18:25–19:00: quality 0.3M33 19:00–22:40: quality 0.6M33 22:40–23:30: quality 0.5M33 23:30–23:55: quality 0.4M33 23:55–00:05: quality 0.3observe M33 20:25–21:40scheduleM33M45M31M4218:0020:0022:0000:0002:0004:0006:00

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
17:15–18:25 — nothing worth pointing at — 1.17
18:25–18:55 NGC 7000 0.5 0.31
18:55–19:00 — nothing worth pointing at — 0.08
19:00–19:45 NGC 7000 0.75 0.55
19:45–20:25 V1057 Cyg 0.67 0.38
20:25–21:40 M33 1.25 0.58
21:40–22:55 M45 1.25 0.64
22:55–23:45 M31 0.83 0.43
23:45–01:55 M42 2.17 0.58
01:55–07:45 — nothing worth pointing at — 5.83

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 42 unknown 19:00–23:55 (marginal) 89.8° at 17:15 32.2° 0.83
M42 Great Orion Nebula 65 unknown 20:55–01:00 (good) 42.9° at 22:05 54.5° 2.17
M45 Seven Sisters 64 unknown 20:45–01:00 (good) 72.5° at 20:20 23.8° 1.25
NGC 7000 North America Nebula 14 unknown 19:00–20:25 (marginal) 87.2° at 13:30 70.9° 1.25
V1057 Cyg 14 unknown 19:00–20:25 (marginal) 87.3° at 13:30 70.9° 0.67
M33 Triangulum Pinwheel 44 unknown 19:00–00:05 (marginal) 79.2° at 18:05 17.5° 1.25

💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2043-01-18"

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"}.