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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 Thursday, 02 January 2031 · astronomical night 18:41 → 06:08 (11.44 h) · Moon 72% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:35–18:10: quality 0.1M31 18:10–18:45: quality 0.2M31 18:45–23:55: quality 0.5M31 23:55–00:25: quality 0.4M31 00:25–01:00: quality 0.3observe M31 21:15–22:45M42M42 19:25–19:30: quality 0.2M42 19:30–20:00: quality 0.3M42 20:00–20:30: quality 0.4M42 20:30–23:20: quality 0.5M42 23:20–02:00: quality 0.6M42 02:00–02:25: quality 0.5M42 02:25–02:50: quality 0.4M42 02:50–03:00: quality 0.3observe M42 22:45–00:15observe M42 02:55–03:00M45M45 17:35–18:10: quality 0.1M45 18:10–18:45: quality 0.2M45 18:45–19:25: quality 0.4M45 19:25–19:30: quality 0.5M45 19:30–20:15: quality 0.4M45 20:15–02:20: quality 0.5M45 02:20–02:45: quality 0.4M45 02:45–03:00: quality 0.3observe M45 00:55–02:55NGC 7000NGC 7000 17:35–18:10: quality 0.1NGC 7000 18:10–18:45: quality 0.3NGC 7000 18:45–19:40: quality 0.6NGC 7000 19:40–20:40: quality 0.5NGC 7000 20:40–21:05: quality 0.4NGC 7000 21:05–21:30: quality 0.3observe NGC 7000 18:45–20:15V1057 CygV1057 Cyg 17:35–18:10: quality 0.1V1057 Cyg 18:10–18:45: quality 0.3V1057 Cyg 18:45–19:40: quality 0.6V1057 Cyg 19:40–20:40: quality 0.5V1057 Cyg 20:40–21:05: quality 0.4V1057 Cyg 21:05–21:30: quality 0.3observe V1057 Cyg 18:10–18:40observe V1057 Cyg 20:15–21:15M33M33 17:35–18:10: quality 0.1M33 18:10–18:45: quality 0.2M33 18:45–19:30: quality 0.5M33 19:30–20:15: quality 0.4M33 20:15–00:15: quality 0.5M33 00:15–00:40: quality 0.4M33 00:40–01:10: quality 0.3observe M33 00:15–00:55scheduleNGC 7000V1057 CygM31M42M4518:0020:0022:0000:0002:0004:0006:00

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
17:00–18:10 — nothing worth pointing at — 1.17
18:10–18:40 V1057 Cyg 0.5 0.31
18:40–18:45 — nothing worth pointing at — 0.08
18:45–20:15 NGC 7000 1.5 0.56
20:15–21:15 V1057 Cyg 1.0 0.43
21:15–22:45 M31 1.5 0.46
22:45–00:15 M42 1.5 0.55
00:15–00:55 M33 0.67 0.37
00:55–02:55 M45 2.0 0.48
02:55–03:00 M42 0.08 0.31
03:00–07:50 — nothing worth pointing at — 4.83

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 35 unknown 18:45–00:40 (marginal) 89.5° at 18:15 32.7° 1.5
M42 Great Orion Nebula 54 unknown 19:45–03:00 (marginal) 42.9° at 23:10 52.3° 1.58
M45 Seven Sisters 53 unknown 18:45–02:55 (marginal) 72.5° at 21:20 20.7° 2.0
NGC 7000 North America Nebula 23 unknown 18:45–21:20 (marginal) 87.2° at 14:35 72.1° 1.5
V1057 Cyg 23 unknown 18:45–21:20 (marginal) 87.3° at 14:35 72.1° 1.5
M33 Triangulum Pinwheel 35 unknown 18:45–00:55 (marginal) 79.1° at 19:10 17.9° 0.67
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2031-01-02"

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"}.