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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 Sunday, 12 October 2031 · astronomical night 20:17 → 05:58 (9.68 h) · Moon 12% (waning crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:15–19:50: quality 0.1M31 19:50–20:20: quality 0.4M31 20:20–21:20: quality 0.9M31 21:20–04:05: quality 1.0M31 04:05–05:25: quality 0.9M31 05:25–06:00: quality 0.8M31 06:00–06:30: quality 0.4M31 06:30–06:35: quality 0.3M31 06:35–07:05: quality 0.1observe M31 23:30–01:20M42M42 01:45–01:55: quality 0.4M42 01:55–02:10: quality 0.5M42 02:10–02:25: quality 0.6M42 02:25–02:45: quality 0.7M42 02:45–03:55: quality 0.8M42 03:55–04:30: quality 0.9M42 04:30–04:45: quality 0.8M42 04:45–06:00: quality 0.9M42 06:00–06:35: quality 0.4M42 06:35–07:05: quality 0.1observe M42 05:00–06:35M45M45 22:10–22:15: quality 0.4M45 22:15–22:30: quality 0.5M45 22:30–22:45: quality 0.6M45 22:45–23:00: quality 0.7M45 23:00–23:45: quality 0.8M45 23:45–01:05: quality 0.9M45 01:05–06:00: quality 1.0M45 06:00–06:35: quality 0.5M45 06:35–07:05: quality 0.1observe M45 03:10–05:00NGC 7000NGC 7000 19:15–19:50: quality 0.2NGC 7000 19:50–20:20: quality 0.5NGC 7000 20:20–00:25: quality 1.0NGC 7000 00:25–01:55: quality 0.9NGC 7000 01:55–02:50: quality 0.8NGC 7000 02:50–03:10: quality 0.7NGC 7000 03:10–03:25: quality 0.6NGC 7000 03:25–03:45: quality 0.5NGC 7000 03:45–03:50: quality 0.4observe NGC 7000 19:50–21:40V1057 CygV1057 Cyg 19:15–19:50: quality 0.2V1057 Cyg 19:50–20:20: quality 0.5V1057 Cyg 20:20–00:25: quality 1.0V1057 Cyg 00:25–01:55: quality 0.9V1057 Cyg 01:55–02:50: quality 0.8V1057 Cyg 02:50–03:10: quality 0.7V1057 Cyg 03:10–03:25: quality 0.6V1057 Cyg 03:25–03:40: quality 0.5V1057 Cyg 03:40–03:50: quality 0.4observe V1057 Cyg 21:40–23:30M33M33 19:35–19:50: quality 0.1M33 19:50–20:20: quality 0.3M33 20:20–20:25: quality 0.7M33 20:25–21:15: quality 0.8M33 21:15–22:35: quality 0.9M33 22:35–04:30: quality 1.0M33 04:30–05:45: quality 0.9M33 05:45–06:00: quality 0.8M33 06:00–06:35: quality 0.4M33 06:35–07:05: quality 0.1observe M33 01:20–03:10scheduleNGC 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
18:45–19:50 — nothing worth pointing at — 1.08
19:50–21:40 NGC 7000 1.83 0.86
21:40–23:30 V1057 Cyg 1.83 1.0
23:30–01:20 M31 1.83 1.0
01:20–03:10 M33 1.83 1.0
03:10–05:00 M45 1.83 0.99
05:00–06:35 M42 1.58 0.7
06:35–07:35 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 20:20–06:00 (good) 89.7° at 00:40 126.3° 1.83
M42 Great Orion Nebula 79 unknown 02:20–06:00 (good) 42.9° at 05:30 75.1° 1.58
M45 Seven Sisters 100 unknown 22:40–06:00 (good) 72.5° at 03:45 99.3° 1.83
NGC 7000 North America Nebula 100 unknown 20:20–03:15 (good) 87.2° at 20:55 127.4° 1.83
V1057 Cyg 100 unknown 20:20–03:15 (good) 87.3° at 20:55 127.5° 1.83
M33 Triangulum Pinwheel 100 unknown 20:20–06:00 (good) 79.1° at 01:30 125.0° 1.83
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2031-10-12"

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"}.