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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 Saturday, 04 October 2031 · astronomical night 20:30 → 05:49 (9.31 h) · Moon 82% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:30–20:00: quality 0.1M31 20:00–20:35: quality 0.4M31 20:35–21:15: quality 0.9M31 21:15–22:45: quality 0.7M31 22:45–00:55: quality 0.6M31 00:55–04:30: quality 0.5M31 04:30–05:50: quality 0.4M31 05:50–06:25: quality 0.2M31 06:25–06:55: quality 0.1observe M31 23:20–01:00M42M42 02:20–02:50: quality 0.2M42 02:50–05:25: quality 0.3M42 05:25–05:50: quality 0.4M42 05:50–06:25: quality 0.2M42 06:25–06:55: quality 0.1observe M42 04:20–05:50M45M45 22:40–22:45: quality 0.2M45 22:45–23:15: quality 0.3M45 23:15–05:50: quality 0.4M45 05:50–06:25: quality 0.2M45 06:25–06:55: quality 0.1observe M45 02:40–04:20NGC 7000NGC 7000 19:30–20:00: quality 0.2NGC 7000 20:00–20:35: quality 0.5NGC 7000 20:35–21:15: quality 1.0NGC 7000 21:15–00:20: quality 0.8NGC 7000 00:20–01:40: quality 0.7NGC 7000 01:40–03:15: quality 0.6NGC 7000 03:15–03:40: quality 0.5NGC 7000 03:40–04:05: quality 0.4NGC 7000 04:05–04:25: quality 0.3observe NGC 7000 20:00–21:40V1057 CygV1057 Cyg 19:30–20:00: quality 0.2V1057 Cyg 20:00–20:35: quality 0.5V1057 Cyg 20:35–21:15: quality 1.0V1057 Cyg 21:15–00:20: quality 0.8V1057 Cyg 00:20–01:40: quality 0.7V1057 Cyg 01:40–03:15: quality 0.6V1057 Cyg 03:15–03:40: quality 0.5V1057 Cyg 03:40–04:05: quality 0.4V1057 Cyg 04:05–04:25: quality 0.3observe V1057 Cyg 21:40–23:20M33M33 20:05–20:20: quality 0.2M33 20:20–20:35: quality 0.3M33 20:35–20:45: quality 0.6M33 20:45–20:55: quality 0.7M33 20:55–21:15: quality 0.8M33 21:15–23:45: quality 0.6M33 23:45–01:55: quality 0.5M33 01:55–05:50: quality 0.4M33 05:50–06:25: quality 0.2M33 06:25–06:55: quality 0.1observe M33 01:00–02:40scheduleNGC 7000V1057 CygM31M33M45M4220:0022:0000:0002:0004:0006:00

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
18:55–20:00 — nothing worth pointing at — 1.08
20:00–21:40 NGC 7000 1.67 0.78
21:40–23:20 V1057 Cyg 1.67 0.8
23:20–01:00 M31 1.67 0.58
01:00–02:40 M33 1.67 0.46
02:40–04:20 M45 1.67 0.38
04:20–05:50 M42 1.5 0.34
05:50–07:25 — nothing worth pointing at — 1.58

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 90 unknown 20:35–23:50 (good) 89.6° at 01:10 47.3° 1.67
M42 Great Orion Nebula 11 unknown 03:10–05:50 (marginal) 42.9° at 06:05 33.9° 1.5
M45 Seven Sisters 32 unknown 23:00–05:50 (marginal) 72.5° at 04:15 5.8° 1.67
NGC 7000 North America Nebula 100 unknown 20:35–02:30 (good) 87.2° at 21:30 87.1° 1.67
V1057 Cyg 100 unknown 20:35–02:30 (good) 87.3° at 21:30 87.1° 1.67
M33 Triangulum Pinwheel 81 unknown 20:35–21:15 (good) 79.1° at 02:05 35.1° 1.67
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2031-10-04"

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"}.