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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 Saturday, 24 December 2039 · astronomical night 18:35 → 06:05 (11.5 h) · Moon 74% (waxing gibbous) · 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 18:40–00:40: quality 0.5M31 00:40–01:10: quality 0.4M31 01:10–01:35: quality 0.3observe M31 21:25–23:05M42M42 20:00–20:05: quality 0.2M42 20:05–20:30: quality 0.3M42 20:30–21:00: quality 0.4M42 21:00–23:10: quality 0.5M42 23:10–02:45: quality 0.6M42 02:45–02:50: quality 0.5M42 02:50–02:55: quality 0.7M42 02:55–03:10: quality 0.6M42 03:10–03:30: quality 0.5M42 03:30–03:35: quality 0.4observe M42 23:05–00:45M45M45 17:30–18:05: quality 0.1M45 18:05–18:40: quality 0.2M45 18:40–19:45: quality 0.4M45 19:45–23:55: quality 0.5M45 23:55–02:40: quality 0.6M45 02:40–02:50: quality 0.5M45 02:50–03:00: quality 0.7M45 03:00–03:15: quality 0.6M45 03:15–03:30: quality 0.5M45 03:30–03:35: quality 0.4observe M45 01:35–03:35NGC 7000NGC 7000 17:30–18:05: quality 0.1NGC 7000 18:05–18:40: quality 0.3NGC 7000 18:40–20:35: quality 0.6NGC 7000 20:35–21:20: quality 0.5NGC 7000 21:20–21:45: quality 0.4NGC 7000 21:45–22:05: quality 0.3observe NGC 7000 19:45–21:25V1057 CygV1057 Cyg 17:30–18:05: quality 0.1V1057 Cyg 18:05–18:40: quality 0.3V1057 Cyg 18:40–20:35: quality 0.6V1057 Cyg 20:35–21:20: quality 0.5V1057 Cyg 21:20–21:45: quality 0.4V1057 Cyg 21:45–22:05: quality 0.3observe V1057 Cyg 18:05–19:45M33M33 17:30–18:05: quality 0.1M33 18:05–18:40: quality 0.2M33 18:40–00:55: quality 0.5M33 00:55–01:25: quality 0.4M33 01:25–01:45: quality 0.3observe M33 00:45–01:35scheduleV1057 CygNGC 7000M31M42M33M4518:0020:0022:0000:0002:0004:0006:00

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
16:55–18:05 — nothing worth pointing at — 1.17
18:05–19:45 V1057 Cyg 1.67 0.52
19:45–21:25 NGC 7000 1.67 0.54
21:25–23:05 M31 1.67 0.5
23:05–00:45 M42 1.67 0.57
00:45–01:35 M33 0.83 0.4
01:35–03:35 M45 2.0 0.56
03:35–07:50 — nothing worth pointing at — 4.25

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 44 unknown 18:40–01:25 (marginal) 89.7° at 18:55 37.0° 1.67
M42 Great Orion Nebula 67 unknown 01:05–02:30 (good) 42.9° at 23:45 54.5° 1.67
M45 Seven Sisters 71 unknown 02:50–03:10 (good) 72.5° at 21:55 28.7° 2.0
NGC 7000 North America Nebula 33 unknown 18:40–19:30 (good) 87.2° at 15:10 74.0° 1.67
V1057 Cyg 33 unknown 18:40–19:30 (good) 87.3° at 15:10 74.0° 1.67
M33 Triangulum Pinwheel 41 unknown 18:40–01:35 (marginal) 79.2° at 19:45 22.9° 0.83
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2039-12-24"

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"}.