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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 Monday, 23 December 2047 · astronomical night 18:35 → 06:05 (11.51 h) · Moon 48% (first quarter) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:30–18:05: quality 0.1M31 18:05–18:40: quality 0.3M31 18:40–00:20: quality 0.7M31 00:20–00:45: quality 0.8M31 00:45–01:00: quality 0.7M31 01:00–01:15: quality 0.6M31 01:15–01:30: quality 0.5M31 01:30–01:40: quality 0.4observe M31 00:30–01:15M42M42 20:05–20:25: quality 0.4M42 20:25–20:45: quality 0.5M42 20:45–21:05: quality 0.6M42 21:05–22:30: quality 0.7M42 22:30–00:20: quality 0.8M42 00:20–01:35: quality 0.9M42 01:35–02:45: quality 0.8M42 02:45–03:00: quality 0.7M42 03:00–03:15: quality 0.6M42 03:15–03:30: quality 0.5M42 03:30–03:40: quality 0.4observe M42 23:05–00:30observe M42 01:45–03:40M45M45 17:30–18:05: quality 0.1M45 18:05–18:40: quality 0.3M45 18:40–19:55: quality 0.7M45 19:55–00:20: quality 0.8M45 00:20–00:45: quality 1.0M45 00:45–02:05: quality 0.9M45 02:05–02:50: quality 0.8M45 02:50–03:05: quality 0.7M45 03:05–03:20: quality 0.6M45 03:20–03:35: quality 0.5M45 03:35–03:40: quality 0.4observe M45 21:25–23:05NGC 7000NGC 7000 17:30–18:05: quality 0.1NGC 7000 18:05–18:40: quality 0.4NGC 7000 18:40–19:50: quality 0.7NGC 7000 19:50–21:15: quality 0.6NGC 7000 21:15–21:35: quality 0.5NGC 7000 21:35–22:00: quality 0.4NGC 7000 22:00–22:10: quality 0.3observe NGC 7000 19:45–21:25V1057 CygV1057 Cyg 17:30–18:05: quality 0.1V1057 Cyg 18:05–18:40: quality 0.4V1057 Cyg 18:40–19:50: quality 0.7V1057 Cyg 19:50–21:15: quality 0.6V1057 Cyg 21:15–21:35: quality 0.5V1057 Cyg 21:35–22:00: quality 0.4V1057 Cyg 22:00–22:10: quality 0.3observe V1057 Cyg 18:05–19:45M33M33 17:30–18:05: quality 0.1M33 18:05–18:40: quality 0.3M33 18:40–00:20: quality 0.7M33 00:20–01:00: quality 0.8M33 01:00–01:15: quality 0.7M33 01:15–01:30: quality 0.6M33 01:30–01:45: quality 0.5M33 01:45–01:50: quality 0.4observe M33 01:15–01:45scheduleV1057 CygNGC 7000M45M42M4218:0020:0022:0000:0002:0004:0006:00

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
16:50–18:05 — nothing worth pointing at — 1.25
18:05–19:45 V1057 Cyg 1.67 0.56
19:45–21:25 NGC 7000 1.67 0.61
21:25–23:05 M45 1.67 0.8
23:05–00:30 M42 1.42 0.8
00:30–01:15 M31 0.75 0.69
01:15–01:45 M33 0.5 0.54
01:45–03:40 M42 1.92 0.7
03:40–07:50 — nothing worth pointing at — 4.17

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 81 unknown 18:40–01:05 (good) 89.6° at 19:00 38.0° 0.75
M42 Great Orion Nebula 88 unknown 20:55–03:10 (good) 42.9° at 23:50 86.1° 3.33
M45 Seven Sisters 98 unknown 18:40–03:10 (good) 72.6° at 22:00 59.2° 1.67
NGC 7000 North America Nebula 41 unknown 18:40–21:05 (good) 87.2° at 15:15 54.7° 1.67
V1057 Cyg 41 unknown 18:40–21:05 (good) 87.2° at 15:15 54.7° 1.67
M33 Triangulum Pinwheel 84 unknown 18:40–01:20 (good) 79.2° at 19:50 35.0° 0.5
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2047-12-23"

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"}.