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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 Wednesday, 29 October 2025 · astronomical night 18:52 → 05:16 (10.4 h) · Moon 52% (first quarter) · weather: ERA5 history

M31M31 17:50–18:25: quality 0.1M31 18:25–18:55: quality 0.4M31 18:55–20:40: quality 0.8M31 20:40–23:15: quality 0.9M31 23:15–01:55: quality 1.0M31 01:55–03:25: quality 0.9M31 03:25–04:15: quality 0.8M31 04:15–04:30: quality 0.7M31 04:30–04:50: quality 0.6M31 04:50–05:05: quality 0.5M31 05:05–05:15: quality 0.4observe M31 20:20–22:15M42M42 23:40–23:45: quality 0.4M42 23:45–00:00: quality 0.5M42 00:00–00:15: quality 0.6M42 00:15–00:35: quality 0.7M42 00:35–01:45: quality 0.8M42 01:45–05:05: quality 0.9M42 05:05–05:20: quality 0.8M42 05:20–05:50: quality 0.4M42 05:50–06:25: quality 0.1observe M42 03:25–05:50M45M45 20:00–20:15: quality 0.4M45 20:15–20:30: quality 0.5M45 20:30–20:45: quality 0.6M45 20:45–21:05: quality 0.7M45 21:05–22:25: quality 0.8M45 22:25–23:15: quality 0.9M45 23:15–04:15: quality 1.0M45 04:15–05:20: quality 0.9M45 05:20–05:50: quality 0.4M45 05:50–06:25: quality 0.1observe M45 01:30–03:25NGC 7000NGC 7000 17:50–18:25: quality 0.1NGC 7000 18:25–18:55: quality 0.4NGC 7000 18:55–23:15: quality 0.8NGC 7000 23:15–23:45: quality 0.9NGC 7000 23:45–00:45: quality 0.8NGC 7000 00:45–01:00: quality 0.7NGC 7000 01:00–01:15: quality 0.6NGC 7000 01:15–01:35: quality 0.5NGC 7000 01:35–01:45: quality 0.4observe NGC 7000 00:10–01:30V1057 CygV1057 Cyg 17:50–18:25: quality 0.1V1057 Cyg 18:25–18:55: quality 0.4V1057 Cyg 18:55–23:15: quality 0.8V1057 Cyg 23:15–23:45: quality 0.9V1057 Cyg 23:45–00:40: quality 0.8V1057 Cyg 00:40–01:00: quality 0.7V1057 Cyg 01:00–01:15: quality 0.6V1057 Cyg 01:15–01:35: quality 0.5V1057 Cyg 01:35–01:40: quality 0.4observe V1057 Cyg 18:25–20:20M33M33 17:50–18:25: quality 0.1M33 18:25–18:45: quality 0.3M33 18:45–18:55: quality 0.4M33 18:55–19:30: quality 0.7M33 19:30–20:55: quality 0.8M33 20:55–23:15: quality 0.9M33 23:15–02:25: quality 1.0M33 02:25–03:45: quality 0.9M33 03:45–04:35: quality 0.8M33 04:35–04:50: quality 0.7M33 04:50–05:00: quality 0.6M33 05:00–05:15: quality 0.5M33 05:15–05:20: quality 0.4M33 05:20–05:25: quality 0.2observe M33 22:15–00:10scheduleV1057 CygM31M33NGC 7000M45M4218:0020:0022:0000:0002:0004:0006:00

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
17:15–18:25 — nothing worth pointing at — 1.17
18:25–20:20 V1057 Cyg 1.92 0.69
20:20–22:15 M31 1.92 0.86
22:15–00:10 M33 1.92 0.94
00:10–01:30 NGC 7000 1.33 0.69
01:30–03:25 M45 1.92 1.0
03:25–05:50 M42 2.42 0.78
05:50–06:55 — nothing worth pointing at — 1.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 100 18:55–04:40 (good) 89.6° at 22:30 82.0° 1.92
M42 Great Orion Nebula 89 89 00:10–05:20 (good) 42.9° at 03:25 125.2° 2.42
M45 Seven Sisters 100 100 20:35–05:20 (good) 72.5° at 01:35 110.4° 1.92
NGC 7000 North America Nebula 88 88 18:55–01:10 (good) 87.2° at 18:50 65.2° 1.33
V1057 Cyg 88 88 18:55–01:05 (good) 87.3° at 18:50 65.2° 1.92
M33 Triangulum Pinwheel 100 100 18:55–04:55 (good) 79.1° at 23:25 85.1° 1.92

💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2025-10-29"

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"}.