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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, 09 December 2029 · astronomical night 18:30 → 05:57 (11.45 h) · Moon 23% (waxing crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:25–18:00: quality 0.1M31 18:00–18:35: quality 0.5M31 18:35–21:15: quality 0.9M31 21:15–23:15: quality 1.0M31 23:15–00:40: quality 0.9M31 00:40–01:35: quality 0.8M31 01:35–01:50: quality 0.7M31 01:50–02:05: quality 0.6M31 02:05–02:25: quality 0.5M31 02:25–02:30: quality 0.4observe M31 22:45–00:35M42M42 20:55–21:05: quality 0.4M42 21:05–21:20: quality 0.5M42 21:20–21:35: quality 0.6M42 21:35–21:55: quality 0.7M42 21:55–23:05: quality 0.8M42 23:05–02:25: quality 0.9M42 02:25–03:35: quality 0.8M42 03:35–03:55: quality 0.7M42 03:55–04:10: quality 0.6M42 04:10–04:25: quality 0.5M42 04:25–04:30: quality 0.4observe M42 02:25–04:30M45M45 17:25–18:00: quality 0.1M45 18:00–18:05: quality 0.3M45 18:05–18:35: quality 0.4M45 18:35–19:25: quality 0.8M45 19:25–20:45: quality 0.9M45 20:45–01:35: quality 1.0M45 01:35–02:55: quality 0.9M45 02:55–03:45: quality 0.8M45 03:45–04:00: quality 0.7M45 04:00–04:10: quality 0.6M45 04:10–04:25: quality 0.5M45 04:25–04:30: quality 0.4observe M45 00:35–02:25NGC 7000NGC 7000 17:25–18:00: quality 0.1NGC 7000 18:00–18:10: quality 0.4NGC 7000 18:10–18:35: quality 0.5NGC 7000 18:35–19:55: quality 0.9NGC 7000 19:55–22:00: quality 0.8NGC 7000 22:00–22:20: quality 0.7NGC 7000 22:20–22:35: quality 0.6NGC 7000 22:35–22:55: quality 0.5NGC 7000 22:55–23:00: quality 0.4observe NGC 7000 18:00–19:50V1057 CygV1057 Cyg 17:25–18:00: quality 0.1V1057 Cyg 18:00–18:10: quality 0.4V1057 Cyg 18:10–18:35: quality 0.5V1057 Cyg 18:35–19:55: quality 0.9V1057 Cyg 19:55–22:00: quality 0.8V1057 Cyg 22:00–22:20: quality 0.7V1057 Cyg 22:20–22:35: quality 0.6V1057 Cyg 22:35–22:50: quality 0.5V1057 Cyg 22:50–23:00: quality 0.4observe V1057 Cyg 21:40–22:45M33M33 17:25–18:00: quality 0.1M33 18:00–18:05: quality 0.4M33 18:05–18:35: quality 0.5M33 18:35–21:15: quality 0.9M33 21:15–23:45: quality 1.0M33 23:45–01:05: quality 0.9M33 01:05–01:55: quality 0.8M33 01:55–02:05: quality 0.7M33 02:05–02:20: quality 0.6M33 02:20–02:35: quality 0.5M33 02:35–02:40: quality 0.4observe M33 19:50–21:40scheduleNGC 7000M33V1057 CygM31M45M4218:0020:0022:0000:0002:0004:0006:00

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
18:00–19:50 NGC 7000 1.83 0.75
19:50–21:40 M33 1.83 0.95
21:40–22:45 V1057 Cyg 1.08 0.68
22:45–00:35 M31 1.83 0.92
00:35–02:25 M45 1.83 0.96
02:25–04:30 M42 2.08 0.72
04:30–07:40 — nothing worth pointing at — 3.17

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 18:35–02:00 (good) 89.7° at 19:50 73.5° 1.83
M42 Great Orion Nebula 89 unknown 21:30–04:00 (good) 42.9° at 00:40 124.9° 2.08
M45 Seven Sisters 100 unknown 18:35–04:05 (good) 72.5° at 22:55 104.4° 1.83
NGC 7000 North America Nebula 86 unknown 18:35–22:25 (good) 87.2° at 16:05 56.8° 1.83
V1057 Cyg 86 unknown 18:35–22:25 (good) 87.3° at 16:05 56.8° 1.08
M33 Triangulum Pinwheel 100 unknown 18:35–02:15 (good) 79.1° at 20:40 77.6° 1.83
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2029-12-09"

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"}.