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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, 03 February 2031 · astronomical night 19:13 → 05:55 (10.7 h) · Moon 88% (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 19:15–19:55: quality 0.6M31 19:55–21:50: quality 0.5M31 21:50–22:20: quality 0.4M31 22:20–22:50: quality 0.3M31 22:50–22:55: quality 0.2observe M31 18:45–19:05observe M31 19:15–19:55observe M31 21:55–22:35M42M42 18:45–19:15: quality 0.2M42 19:15–00:05: quality 0.3M42 00:05–00:55: quality 0.2M45M45 18:10–18:45: quality 0.1M45 18:45–19:15: quality 0.2M45 19:15–21:25: quality 0.4M45 21:25–00:25: quality 0.3M45 00:25–00:55: quality 0.2observe M45 20:55–21:55observe 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 05:35–05:40: quality 0.4NGC 7000 05:40–06:00: quality 0.5NGC 7000 06:00–06:25: quality 0.3NGC 7000 06:25–06:30: quality 0.4NGC 7000 06:30–07:05: quality 0.1observe NGC 7000 05:35–06:00observe NGC 7000 06:10–06:30V1057 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 05:35–05:45: quality 0.4V1057 Cyg 05:45–06:00: quality 0.5V1057 Cyg 06:00–06:25: quality 0.3V1057 Cyg 06:25–06:30: 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 19:15–19:30: quality 0.6M33 19:30–21:20: quality 0.5M33 21:20–22:25: quality 0.4M33 22:25–22:55: quality 0.3M33 22:55–23:05: quality 0.2observe M33 19:55–20:55observe M33 22:35–22:40scheduleM33M45M4518:0020:0022:0000:0002:0004:0006:00

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
18:45–19:05 M31 0.33 0.31
19:05–19:15 — nothing worth pointing at — 0.17
19:15–19:55 M31 0.67 0.57
19:55–20:55 M33 1.0 0.5
20:55–21:55 M45 1.0 0.35
21:55–22:35 M31 0.67 0.36
22:35–22:40 M33 0.08 0.31
22:40–00:05 M45 1.42 0.32
00:05–05:35 — nothing worth pointing at — 5.5
05:35–06:00 NGC 7000 0.42 0.48
06:00–06:10 — nothing worth pointing at — 0.17
06:10–06:30 NGC 7000 0.33 0.33
06:30–07:35 — nothing worth pointing at — 1.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 28 unknown 19:15–22:35 (marginal) 89.7° at 16:10 72.6° 1.67
M42 Great Orion Nebula 13 unknown 19:15–19:50 (marginal) 42.9° at 21:05 28.5° 0.0
M45 Seven Sisters 20 unknown 19:15–00:05 (marginal) 72.5° at 19:15 35.9° 2.42
NGC 7000 North America Nebula 8 unknown 05:35–06:00 (marginal) 87.2° at 12:25 105.6° 0.75
V1057 Cyg 8 unknown 05:35–06:00 (marginal) 87.3° at 12:25 105.7° 0.0
M33 Triangulum Pinwheel 26 unknown 19:15–22:40 (marginal) 79.1° at 17:00 64.5° 1.08

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2031-02-03"

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"}.