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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 Friday, 07 February 2031 · astronomical night 19:18 → 05:51 (10.56 h) · Moon 100% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:15–18:50: quality 0.1M31 18:50–19:20: quality 0.4M31 19:20–20:25: quality 0.8M31 20:25–21:35: quality 0.7M31 21:35–21:55: quality 0.6M31 21:55–22:15: quality 0.5M31 22:15–22:35: quality 0.4observe M31 18:50–19:55M42M42 18:15–18:50: quality 0.1M42 18:50–19:20: quality 0.3M42 19:20–19:40: quality 0.6M42 19:40–22:10: quality 0.5M42 22:10–23:45: quality 0.4M42 23:45–00:20: quality 0.3M42 00:20–00:35: quality 0.2observe M42 22:05–23:40M45M45 18:15–18:50: quality 0.1M45 18:50–19:20: quality 0.4M45 19:20–21:30: quality 0.7M45 21:30–22:55: quality 0.6M45 22:55–23:55: quality 0.5M45 23:55–00:15: quality 0.4M45 00:15–00:35: quality 0.3observe M45 21:00–22:05observe M45 23:40–00:25NGC 7000NGC 7000 18:15–18:50: quality 0.1NGC 7000 18:50–19:05: quality 0.2NGC 7000 05:20–05:35: quality 0.4NGC 7000 05:35–05:55: quality 0.5NGC 7000 05:55–06:20: quality 0.3NGC 7000 06:20–06:25: quality 0.4NGC 7000 06:25–07:00: quality 0.1observe NGC 7000 05:20–05:55observe NGC 7000 06:05–06:25V1057 CygV1057 Cyg 18:15–18:50: quality 0.1V1057 Cyg 18:50–19:05: quality 0.2V1057 Cyg 05:20–05:35: quality 0.4V1057 Cyg 05:35–05:55: quality 0.5V1057 Cyg 05:55–06:20: quality 0.3V1057 Cyg 06:20–06:25: quality 0.4V1057 Cyg 06:25–07:00: quality 0.1M33M33 18:15–18:50: quality 0.1M33 18:50–19:20: quality 0.4M33 19:20–20:35: quality 0.8M33 20:35–21:50: quality 0.7M33 21:50–22:10: quality 0.6M33 22:10–22:25: quality 0.5M33 22:25–22:45: quality 0.4M33 22:45–22:50: quality 0.3observe M33 19:55–21:00scheduleM31M33M45M42M4518:0020:0022:0000:0002:0004:0006:00

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
17:40–18:50 — nothing worth pointing at — 1.17
18:50–19:55 M31 1.08 0.63
19:55–21:00 M33 1.08 0.76
21:00–22:05 M45 1.08 0.65
22:05–23:40 M42 1.58 0.42
23:40–00:25 M45 0.75 0.41
00:25–05:20 — nothing worth pointing at — 4.92
05:20–05:55 NGC 7000 0.58 0.46
05:55–06:05 — nothing worth pointing at — 0.17
06:05–06:25 NGC 7000 0.33 0.33
06:25–07:30 — nothing worth pointing at — 1.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 51 unknown 19:20–21:45 (good) 89.7° at 15:55 114.2° 1.08
M42 Great Orion Nebula 35 unknown 19:20–00:00 (marginal) 42.9° at 20:45 62.0° 1.58
M45 Seven Sisters 63 unknown 19:20–22:10 (good) 72.5° at 19:00 84.3° 1.83
NGC 7000 North America Nebula 8 unknown 05:20–05:55 (marginal) 87.2° at 12:10 126.0° 0.92
V1057 Cyg 8 unknown 05:20–05:55 (marginal) 87.3° at 12:10 126.1° 0.0
M33 Triangulum Pinwheel 56 unknown 19:20–22:00 (good) 79.1° at 16:45 110.9° 1.08

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2031-02-07"

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"}.