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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 Wednesday, 04 December 2030 · astronomical night 18:30 → 05:52 (11.38 h) · Moon 78% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:25–18:00: quality 0.1M31 18:00–18:35: quality 0.2M31 18:35–22:15: quality 0.4M31 22:15–02:00: quality 0.5M31 02:00–02:30: quality 0.4M31 02:30–02:55: quality 0.3observe M31 01:25–02:45M42M42 21:20–21:40: quality 0.3M42 21:40–22:05: quality 0.4M42 22:05–23:00: quality 0.5M42 23:00–01:20: quality 0.6M42 01:20–03:10: quality 0.7M42 03:10–03:55: quality 0.8M42 03:55–04:15: quality 0.7M42 04:15–04:30: quality 0.6M42 04:30–04:45: quality 0.5M42 04:45–04:55: quality 0.4observe M42 23:35–01:25observe M42 02:55–04:55M45M45 18:00–18:05: quality 0.1M45 18:05–18:35: quality 0.2M45 18:35–20:25: quality 0.4M45 20:25–23:40: quality 0.5M45 23:40–03:10: quality 0.6M45 03:10–03:20: quality 0.9M45 03:20–04:05: quality 0.8M45 04:05–04:20: quality 0.7M45 04:20–04:30: quality 0.6M45 04:30–04:45: quality 0.5M45 04:45–04:55: quality 0.4observe M45 21:45–23:35NGC 7000NGC 7000 17:25–18:00: quality 0.1NGC 7000 18:00–18:35: quality 0.3NGC 7000 18:35–20:00: quality 0.6NGC 7000 20:00–22:25: quality 0.5NGC 7000 22:25–22:50: quality 0.4NGC 7000 22:50–23:20: quality 0.3observe NGC 7000 18:00–18:30observe NGC 7000 18:35–19:55V1057 CygV1057 Cyg 17:25–18:00: quality 0.1V1057 Cyg 18:00–18:35: quality 0.3V1057 Cyg 18:35–20:00: quality 0.6V1057 Cyg 20:00–22:25: quality 0.5V1057 Cyg 22:25–22:50: quality 0.4V1057 Cyg 22:50–23:20: quality 0.3observe V1057 Cyg 19:55–21:45M33M33 17:25–18:00: quality 0.1M33 18:00–18:35: quality 0.2M33 18:35–22:20: quality 0.4M33 22:20–02:20: quality 0.5M33 02:20–02:45: quality 0.4M33 02:45–03:05: quality 0.3observe M33 02:45–02:55scheduleNGC 7000V1057 CygM45M42M31M4218:0020:0022:0000:0002:0004:0006:00

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
18:00–18:30 NGC 7000 0.5 0.3
18:30–18:35 — nothing worth pointing at — 0.08
18:35–19:55 NGC 7000 1.33 0.58
19:55–21:45 V1057 Cyg 1.83 0.52
21:45–23:35 M45 1.83 0.52
23:35–01:25 M42 1.83 0.62
01:25–02:45 M31 1.33 0.42
02:45–02:55 M33 0.17 0.33
02:55–04:55 M42 2.0 0.68
04:55–07:35 — nothing worth pointing at — 2.67

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 47 unknown 18:35–02:45 (marginal) 89.7° at 20:10 30.8° 1.33
M42 Great Orion Nebula 83 unknown 00:00–04:20 (good) 42.9° at 01:05 70.6° 3.83
M45 Seven Sisters 86 unknown 00:45–04:25 (good) 72.5° at 23:15 41.9° 1.83
NGC 7000 North America Nebula 39 unknown 18:35–23:05 (marginal) 87.2° at 16:25 61.3° 1.83
V1057 Cyg 39 unknown 18:35–23:05 (marginal) 87.3° at 16:25 61.3° 1.83
M33 Triangulum Pinwheel 50 unknown 18:35–02:55 (marginal) 79.1° at 21:00 21.5° 0.17
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2030-12-04"

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"}.