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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.

Try: an autumn deep-sky night  ·  ← previous night · next night →

Night of Friday, 24 October 2025 · astronomical night 19:59 → 06:11 (10.21 h) · Moon 10% (waxing crescent) · weather: ERA5 history

M31M31 18:55–19:30: quality 0.1M31 19:30–20:00: quality 0.4M31 20:00–20:30: quality 0.7M31 20:30–21:00: quality 0.8M31 21:00–23:00: quality 0.5M31 23:00–00:00: quality 0.3M31 00:00–01:00: quality 0.4M31 01:00–02:00: quality 0.8M31 02:00–03:00: quality 1.0M31 03:00–03:20: quality 0.9M31 03:20–04:50: quality 0.8M31 04:50–05:00: quality 0.7M31 05:00–05:35: quality 0.8M31 05:35–05:50: quality 0.7M31 05:50–06:00: quality 0.6observe M31 23:10–01:00M42M42 01:00–01:20: quality 0.4M42 01:20–01:40: quality 0.5M42 01:40–02:00: quality 0.6M42 02:00–05:00: quality 0.8M42 05:00–05:55: quality 0.9M42 05:55–06:00: quality 0.8M42 07:00–07:20: quality 0.1observe M42 04:40–06:00M45M45 21:20–21:30: quality 0.2M45 21:30–21:55: quality 0.3M45 21:55–23:00: quality 0.4M45 23:00–00:45: quality 0.3M45 00:45–01:00: quality 0.4M45 01:00–02:00: quality 0.8M45 02:00–03:00: quality 1.0M45 03:00–05:00: quality 0.9M45 05:00–05:20: quality 1.0M45 05:20–06:00: quality 0.9M45 07:00–07:20: quality 0.1observe M45 01:00–02:50NGC 7000NGC 7000 18:55–19:30: quality 0.1NGC 7000 19:30–20:00: quality 0.4NGC 7000 20:00–21:00: quality 0.8NGC 7000 21:00–23:00: quality 0.5NGC 7000 23:00–01:00: quality 0.3NGC 7000 01:00–01:55: quality 0.7NGC 7000 01:55–02:00: quality 0.6NGC 7000 02:00–02:20: quality 0.7NGC 7000 02:20–02:35: quality 0.6NGC 7000 02:35–02:50: quality 0.5NGC 7000 02:50–03:00: quality 0.4observe NGC 7000 19:30–21:20V1057 CygV1057 Cyg 18:55–19:30: quality 0.1V1057 Cyg 19:30–20:00: quality 0.4V1057 Cyg 20:00–21:00: quality 0.8V1057 Cyg 21:00–23:00: quality 0.5V1057 Cyg 23:00–01:00: quality 0.3V1057 Cyg 01:00–01:55: quality 0.7V1057 Cyg 01:55–02:00: quality 0.6V1057 Cyg 02:00–02:15: quality 0.7V1057 Cyg 02:15–02:35: quality 0.6V1057 Cyg 02:35–02:50: quality 0.5V1057 Cyg 02:50–03:00: quality 0.4observe V1057 Cyg 21:20–23:10M33M33 18:55–19:30: quality 0.1M33 19:30–19:40: quality 0.3M33 19:40–20:00: quality 0.4M33 20:00–20:05: quality 0.6M33 20:05–21:00: quality 0.7M33 21:00–23:00: quality 0.5M33 23:00–00:00: quality 0.3M33 00:00–01:00: quality 0.4M33 01:00–02:00: quality 0.8M33 02:00–03:00: quality 1.0M33 03:00–03:50: quality 0.9M33 03:50–05:50: quality 0.8M33 05:50–06:00: quality 0.7observe M33 02:50–04:40scheduleNGC 7000V1057 CygM31M45M33M4220:0022:0000:0002:0004:0006:00

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
18:25–19:30 — nothing worth pointing at — 1.08
19:30–21:20 NGC 7000 1.83 0.65
21:20–23:10 V1057 Cyg 1.83 0.5
23:10–01:00 M31 1.83 0.35
01:00–02:50 M45 1.83 0.89
02:50–04:40 M33 1.83 0.86
04:40–06:00 M42 1.33 0.84
06:00–07:45 — nothing worth pointing at — 1.75

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 69 01:00–06:00 (good) 89.6° at 23:50 132.6° 1.83
M42 Great Orion Nebula 89 74 01:50–06:00 (good) 42.9° at 04:45 143.6° 1.33
M45 Seven Sisters 100 68 01:00–06:00 (good) 72.5° at 02:55 171.0° 1.83
NGC 7000 North America Nebula 100 61 01:00–02:25 (good) 87.2° at 20:05 94.6° 1.83
V1057 Cyg 100 61 01:00–02:25 (good) 87.3° at 20:05 94.6° 1.83
M33 Triangulum Pinwheel 100 69 01:00–06:00 (good) 79.1° at 00:40 142.6° 1.83
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2025-10-24"

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"}.