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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, 13 January 2041 · astronomical night 18:52 → 06:07 (11.26 h) · Moon 90% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:45–18:20: quality 0.1M31 18:20–18:55: quality 0.3M31 18:55–20:40: quality 0.5M31 20:40–23:20: quality 0.4M31 23:20–23:55: quality 0.3M31 23:55–00:15: quality 0.2observe M31 20:35–21:50M42M42 18:40–18:55: quality 0.1M42 18:55–19:30: quality 0.2M42 19:30–01:45: quality 0.3M42 01:45–02:15: quality 0.2observe M42 00:20–01:15M45M45 17:45–18:20: quality 0.1M45 18:20–18:55: quality 0.2M45 18:55–19:10: quality 0.4M45 19:10–01:45: quality 0.3M45 01:45–02:15: quality 0.2observe M45 23:05–00:20observe M45 01:15–01:25NGC 7000NGC 7000 17:45–18:20: quality 0.1NGC 7000 18:20–18:55: quality 0.3NGC 7000 18:55–19:40: quality 0.6NGC 7000 19:40–20:00: quality 0.5NGC 7000 20:00–20:25: quality 0.4NGC 7000 20:25–20:45: quality 0.3NGC 7000 06:55–07:20: quality 0.1observe NGC 7000 18:20–19:35V1057 CygV1057 Cyg 17:45–18:20: quality 0.1V1057 Cyg 18:20–18:55: quality 0.3V1057 Cyg 18:55–19:40: quality 0.6V1057 Cyg 19:40–20:00: quality 0.5V1057 Cyg 20:00–20:25: quality 0.4V1057 Cyg 20:25–20:45: quality 0.3V1057 Cyg 06:55–07:20: quality 0.1observe V1057 Cyg 19:35–20:35M33M33 17:45–18:20: quality 0.1M33 18:20–18:55: quality 0.2M33 18:55–19:00: quality 0.5M33 19:00–22:30: quality 0.4M33 22:30–00:00: quality 0.3M33 00:00–00:25: quality 0.2observe M33 21:50–23:05scheduleNGC 7000V1057 CygM31M33M45M4218:0020:0022:0000:0002:0004:0006:00

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
17:10–18:20 — nothing worth pointing at — 1.17
18:20–19:35 NGC 7000 1.25 0.46
19:35–20:35 V1057 Cyg 1.0 0.43
20:35–21:50 M31 1.25 0.43
21:50–23:05 M33 1.25 0.35
23:05–00:20 M45 1.25 0.3
00:20–01:15 M42 0.92 0.31
01:15–01:25 M45 0.17 0.31
01:25–07:50 — nothing worth pointing at — 6.42

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 30 unknown 18:55–23:35 (marginal) 89.6° at 17:30 55.5° 1.25
M42 Great Orion Nebula 16 unknown 00:20–01:15 (marginal) 42.9° at 22:25 31.3° 0.92
M45 Seven Sisters 21 unknown 22:15–01:25 (marginal) 72.5° at 20:35 17.4° 1.42
NGC 7000 North America Nebula 17 unknown 18:20–20:35 (marginal) 87.2° at 13:50 92.3° 1.25
V1057 Cyg 17 unknown 18:20–20:35 (marginal) 87.3° at 13:50 92.3° 1.0
M33 Triangulum Pinwheel 25 unknown 18:55–23:40 (marginal) 79.2° at 18:25 46.2° 1.25

💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2041-01-13"

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"}.