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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, 26 October 2031 · astronomical night 18:57 → 05:13 (10.27 h) · Moon 87% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:55–18:30: quality 0.1M31 18:30–19:00: quality 0.2M31 19:00–00:30: quality 0.5M31 00:30–03:25: quality 0.6M31 03:25–03:35: quality 0.9M31 03:35–04:30: quality 0.8M31 04:30–04:45: quality 0.7M31 04:45–05:00: quality 0.6M31 05:00–05:15: quality 0.5M31 05:15–05:25: quality 0.2observe M31 00:30–02:20M42M42 23:50–00:00: quality 0.3M42 00:00–00:20: quality 0.4M42 00:20–00:40: quality 0.5M42 00:40–01:15: quality 0.6M42 01:15–03:20: quality 0.7M42 03:20–03:25: quality 0.8M42 03:25–05:15: quality 0.9M42 05:15–05:50: quality 0.4M42 05:50–06:20: quality 0.1observe M42 02:20–04:10M45M45 20:15–20:40: quality 0.3M45 20:40–21:00: quality 0.4M45 21:00–22:25: quality 0.5M45 22:25–00:10: quality 0.6M45 00:10–02:55: quality 0.7M45 02:55–03:25: quality 0.8M45 03:25–04:30: quality 1.0M45 04:30–05:15: quality 0.9M45 05:15–05:50: quality 0.4M45 05:50–06:20: quality 0.1observe M45 22:40–00:30observe M45 05:15–05:50NGC 7000NGC 7000 17:55–18:30: quality 0.1NGC 7000 18:30–19:00: quality 0.3NGC 7000 19:00–19:20: quality 0.6NGC 7000 19:20–01:00: quality 0.5NGC 7000 01:00–01:30: quality 0.4NGC 7000 01:30–01:55: quality 0.3observe NGC 7000 19:00–20:50V1057 CygV1057 Cyg 17:55–18:30: quality 0.1V1057 Cyg 18:30–19:00: quality 0.3V1057 Cyg 19:00–19:20: quality 0.6V1057 Cyg 19:20–01:00: quality 0.5V1057 Cyg 01:00–01:30: quality 0.4V1057 Cyg 01:30–01:55: quality 0.3observe V1057 Cyg 20:50–22:40M33M33 18:10–18:30: quality 0.1M33 18:30–19:00: quality 0.2M33 19:00–20:30: quality 0.4M33 20:30–00:35: quality 0.5M33 00:35–03:25: quality 0.6M33 03:25–04:00: quality 0.9M33 04:00–04:50: quality 0.8M33 04:50–05:00: quality 0.7M33 05:00–05:15: quality 0.6M33 05:15–05:25: quality 0.3M33 05:25–05:40: quality 0.2observe M33 04:10–05:15scheduleNGC 7000V1057 CygM45M31M42M3318:0020:0022:0000:0002:0004:0006:00

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
17:20–19:00 — nothing worth pointing at — 1.67
19:00–20:50 NGC 7000 1.83 0.54
20:50–22:40 V1057 Cyg 1.83 0.52
22:40–00:30 M45 1.83 0.62
00:30–02:20 M31 1.83 0.58
02:20–04:10 M42 1.83 0.8
04:10–05:15 M33 1.08 0.74
05:15–05:50 M45 0.58 0.44
05:50–06:50 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 86 unknown 02:25–04:55 (good) 89.7° at 22:45 45.1° 1.83
M42 Great Orion Nebula 89 unknown 00:50–05:15 (good) 42.9° at 03:35 94.3° 1.83
M45 Seven Sisters 100 unknown 23:15–05:15 (good) 72.5° at 01:50 69.0° 2.42
NGC 7000 North America Nebula 50 unknown 19:00–01:45 (marginal) 87.2° at 19:00 53.7° 1.83
V1057 Cyg 50 unknown 19:00–01:45 (marginal) 87.3° at 19:00 53.7° 1.83
M33 Triangulum Pinwheel 89 unknown 01:40–05:10 (good) 79.1° at 23:35 44.2° 1.08
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2031-10-26"

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"}.