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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, 30 December 2041 · astronomical night 18:39 → 06:07 (11.47 h) · Moon 59% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:35–18:10: quality 0.1M31 18:10–18:40: quality 0.3M31 18:40–00:15: quality 0.6M31 00:15–00:35: quality 0.5M31 00:35–01:00: quality 0.4M31 01:00–01:10: quality 0.3observe M31 21:10–22:40M42M42 19:35–19:50: quality 0.3M42 19:50–20:10: quality 0.4M42 20:10–20:30: quality 0.5M42 20:30–22:05: quality 0.6M42 22:05–01:20: quality 0.7M42 01:20–02:15: quality 0.8M42 02:15–02:30: quality 0.7M42 02:30–02:45: quality 0.6M42 02:45–03:00: quality 0.5M42 03:00–03:10: quality 0.4observe M42 01:10–03:10M45M45 17:35–18:10: quality 0.1M45 18:10–18:40: quality 0.3M45 18:40–21:25: quality 0.6M45 21:25–01:20: quality 0.7M45 01:20–01:35: quality 0.9M45 01:35–02:20: quality 0.8M45 02:20–02:35: quality 0.7M45 02:35–02:50: quality 0.6M45 02:50–03:05: quality 0.5M45 03:05–03:10: quality 0.4observe M45 22:40–00:10NGC 7000NGC 7000 17:35–18:10: quality 0.1NGC 7000 18:10–18:40: quality 0.3NGC 7000 18:40–18:50: quality 0.7NGC 7000 18:50–20:40: quality 0.6NGC 7000 20:40–21:00: quality 0.5NGC 7000 21:00–21:25: quality 0.4NGC 7000 21:25–21:40: quality 0.3observe NGC 7000 19:40–21:10V1057 CygV1057 Cyg 17:35–18:10: quality 0.1V1057 Cyg 18:10–18:40: quality 0.3V1057 Cyg 18:40–18:50: quality 0.7V1057 Cyg 18:50–20:40: quality 0.6V1057 Cyg 20:40–21:00: quality 0.5V1057 Cyg 21:00–21:25: quality 0.4V1057 Cyg 21:25–21:40: quality 0.3observe V1057 Cyg 18:10–19:40M33M33 17:35–18:10: quality 0.1M33 18:10–18:40: quality 0.3M33 18:40–00:30: quality 0.6M33 00:30–00:50: quality 0.5M33 00:50–01:10: quality 0.4M33 01:10–01:20: quality 0.3observe M33 00:10–01:10scheduleV1057 CygNGC 7000M31M45M33M4218:0020:0022:0000:0002:0004:0006:00

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
16:55–18:10 — nothing worth pointing at — 1.25
18:10–19:40 V1057 Cyg 1.5 0.54
19:40–21:10 NGC 7000 1.5 0.55
21:10–22:40 M31 1.5 0.61
22:40–00:10 M45 1.5 0.71
00:10–01:10 M33 1.0 0.49
01:10–03:10 M42 2.0 0.69
03:10–07:50 — nothing worth pointing at — 4.67

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 62 unknown 19:25–22:45 (good) 89.6° at 18:30 35.4° 1.5
M42 Great Orion Nebula 84 unknown 21:00–02:40 (good) 42.9° at 23:20 66.2° 2.0
M45 Seven Sisters 87 unknown 19:10–02:40 (good) 72.5° at 21:30 40.4° 1.5
NGC 7000 North America Nebula 31 unknown 18:40–20:00 (good) 87.2° at 14:45 66.9° 1.5
V1057 Cyg 31 unknown 18:40–20:00 (good) 87.3° at 14:45 66.9° 1.5
M33 Triangulum Pinwheel 62 unknown 20:50–23:05 (good) 79.2° at 19:20 24.5° 1.0
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2041-12-30"

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"}.