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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 Tuesday, 04 February 2031 · astronomical night 19:14 → 05:54 (10.66 h) · Moon 94% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:10–18:45: quality 0.1M31 18:45–19:15: quality 0.3M31 19:15–20:40: quality 0.6M31 20:40–21:55: quality 0.5M31 21:55–22:20: quality 0.4M31 22:20–22:50: quality 0.3observe M31 18:45–19:50M42M42 18:10–18:45: quality 0.1M42 18:45–19:15: quality 0.2M42 19:15–23:45: quality 0.3M42 23:45–00:45: quality 0.2M42 00:45–00:50: quality 0.1M45M45 18:10–18:45: quality 0.1M45 18:45–19:15: quality 0.2M45 19:15–19:40: quality 0.5M45 19:40–22:45: quality 0.4M45 22:45–00:20: quality 0.3M45 00:20–00:50: quality 0.2observe M45 20:55–22:00observe M45 22:40–00:05NGC 7000NGC 7000 18:10–18:45: quality 0.1NGC 7000 18:45–19:15: quality 0.2NGC 7000 19:15–19:20: quality 0.3NGC 7000 05:30–05:45: quality 0.4NGC 7000 05:45–05:55: quality 0.5NGC 7000 05:55–06:20: quality 0.3NGC 7000 06:20–06:30: quality 0.4NGC 7000 06:30–07:05: quality 0.1observe NGC 7000 05:30–05:55observe NGC 7000 06:05–06:30V1057 CygV1057 Cyg 18:10–18:45: quality 0.1V1057 Cyg 18:45–19:15: quality 0.2V1057 Cyg 19:15–19:20: quality 0.3V1057 Cyg 05:30–05:50: quality 0.4V1057 Cyg 05:50–05:55: quality 0.5V1057 Cyg 05:55–06:20: quality 0.3V1057 Cyg 06:20–06:30: quality 0.4V1057 Cyg 06:30–07:05: quality 0.1M33M33 18:10–18:45: quality 0.1M33 18:45–19:15: quality 0.3M33 19:15–20:25: quality 0.6M33 20:25–22:05: quality 0.5M33 22:05–22:30: quality 0.4M33 22:30–22:55: quality 0.3M33 22:55–23:00: quality 0.2observe M33 19:50–20:55observe M33 22:00–22:40scheduleM31M33M45M4518:0020:0022:0000:0002:0004:0006:00

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
17:35–18:45 — nothing worth pointing at — 1.17
18:45–19:50 M31 1.08 0.49
19:50–20:55 M33 1.08 0.55
20:55–22:00 M45 1.08 0.39
22:00–22:40 M33 0.67 0.39
22:40–00:05 M45 1.42 0.33
00:05–05:30 — nothing worth pointing at — 5.42
05:30–05:55 NGC 7000 0.42 0.44
05:55–06:05 — nothing worth pointing at — 0.17
06:05–06:30 NGC 7000 0.42 0.34
06:30–07:30 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 33 unknown 19:15–19:55 (good) 89.5° at 16:05 82.8° 1.08
M42 Great Orion Nebula 13 unknown 19:15–20:30 (marginal) 42.9° at 21:00 34.0° 0.0
M45 Seven Sisters 26 unknown 19:15–00:05 (marginal) 72.5° at 19:10 47.8° 2.5
NGC 7000 North America Nebula 8 unknown 05:30–05:55 (marginal) 87.2° at 12:25 112.1° 0.83
V1057 Cyg 8 unknown 05:30–05:55 (marginal) 87.3° at 12:25 112.2° 0.0
M33 Triangulum Pinwheel 32 unknown 19:15–19:40 (good) 79.1° at 17:00 75.8° 1.75

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2031-02-04"

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"}.