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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 Tuesday, 18 December 2029 · astronomical night 18:32 → 06:03 (11.5 h) · Moon 96% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:25–18:00: quality 0.1M31 18:00–18:05: quality 0.3M31 18:05–18:35: quality 0.2M31 18:35–19:10: quality 0.5M31 19:10–22:30: quality 0.4M31 22:30–01:25: quality 0.3M31 01:25–01:55: quality 0.2observe M31 21:30–01:00M42M42 20:20–20:30: quality 0.1M42 20:30–23:00: quality 0.2M42 23:00–03:35: quality 0.3M42 03:35–03:55: quality 0.2observe M42 01:25–02:55M45M45 17:30–18:00: quality 0.1M45 18:00–18:35: quality 0.2M45 18:35–03:30: quality 0.3M45 03:30–03:55: quality 0.2observe M45 02:55–03:10NGC 7000NGC 7000 17:25–18:00: quality 0.1NGC 7000 18:00–18:15: quality 0.4NGC 7000 18:15–18:35: quality 0.3NGC 7000 18:35–18:55: quality 0.7NGC 7000 18:55–20:25: quality 0.6NGC 7000 20:25–21:30: quality 0.5NGC 7000 21:30–22:00: quality 0.4NGC 7000 22:00–22:25: quality 0.3observe NGC 7000 19:30–21:00V1057 CygV1057 Cyg 17:25–18:00: quality 0.1V1057 Cyg 18:00–18:15: quality 0.4V1057 Cyg 18:15–18:35: quality 0.3V1057 Cyg 18:35–18:55: quality 0.7V1057 Cyg 18:55–20:30: quality 0.6V1057 Cyg 20:30–21:30: quality 0.5V1057 Cyg 21:30–22:00: quality 0.4V1057 Cyg 22:00–22:25: quality 0.3observe V1057 Cyg 18:00–19:30M33M33 17:25–18:00: quality 0.1M33 18:00–18:35: quality 0.2M33 18:35–19:50: quality 0.4M33 19:50–01:20: quality 0.3M33 01:20–02:05: quality 0.2observe M33 21:00–21:30scheduleV1057 CygNGC 7000M31M4218:0020:0022:0000:0002:0004:0006:00

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
16:50–18:00 — nothing worth pointing at — 1.17
18:00–19:30 V1057 Cyg 1.5 0.53
19:30–21:00 NGC 7000 1.5 0.56
21:00–21:30 M33 0.5 0.3
21:30–01:00 M31 3.5 0.34
01:00–01:25 — nothing worth pointing at — 0.42
01:25–02:55 M42 1.5 0.32
02:55–03:10 M45 0.25 0.32
03:10–07:45 — nothing worth pointing at — 4.58

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 33 unknown 18:35–01:00 (marginal) 89.7° at 19:15 46.8° 3.5
M42 Great Orion Nebula 17 unknown 01:25–03:10 (marginal) 42.9° at 00:05 35.2° 1.5
M45 Seven Sisters 23 unknown 18:35–20:10 (marginal) 72.5° at 22:20 5.6° 0.25
NGC 7000 North America Nebula 38 unknown 18:35–19:40 (good) 87.2° at 15:30 85.9° 1.5
V1057 Cyg 38 unknown 18:35–19:40 (good) 87.3° at 15:30 86.0° 1.5
M33 Triangulum Pinwheel 25 unknown 18:35–21:30 (marginal) 79.1° at 20:05 35.5° 0.5

💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2029-12-18"

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"}.