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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, 05 October 2025 · astronomical night 20:28 → 05:50 (9.38 h) · Moon 98% (full moon) · weather: ERA5 history

M31M31 19:25–20:00: quality 0.1M31 20:00–20:30: quality 0.2M31 20:30–22:00: quality 0.4M31 22:00–23:00: quality 0.3M31 23:00–00:00: quality 0.2M31 00:00–01:00: quality 0.3M31 01:00–02:00: quality 0.2M31 02:00–03:00: quality 0.1observe M31 22:00–23:00M42M42 02:10–03:00: quality 0.1M45M45 22:35–23:00: quality 0.2M45 23:00–23:05: quality 0.1M45 23:05–00:00: quality 0.2M45 00:00–01:00: quality 0.4M45 01:00–02:00: quality 0.2M45 02:00–03:00: quality 0.1observe M45 00:00–00:45NGC 7000NGC 7000 19:25–20:00: quality 0.1NGC 7000 20:00–20:30: quality 0.3NGC 7000 20:30–20:35: quality 0.6NGC 7000 20:35–22:00: quality 0.5NGC 7000 22:00–23:00: quality 0.4NGC 7000 23:00–00:00: quality 0.2NGC 7000 00:00–01:00: quality 0.4NGC 7000 01:00–02:00: quality 0.2NGC 7000 02:00–03:00: quality 0.1observe NGC 7000 20:30–21:15V1057 CygV1057 Cyg 19:25–20:00: quality 0.1V1057 Cyg 20:00–20:30: quality 0.3V1057 Cyg 20:30–20:35: quality 0.6V1057 Cyg 20:35–22:00: quality 0.5V1057 Cyg 22:00–23:00: quality 0.4V1057 Cyg 23:00–00:00: quality 0.2V1057 Cyg 00:00–01:00: quality 0.4V1057 Cyg 01:00–02:00: quality 0.2V1057 Cyg 02:00–03:00: quality 0.1observe V1057 Cyg 21:15–22:00M33M33 20:00–20:30: quality 0.1M33 20:30–20:55: quality 0.3M33 20:55–21:00: quality 0.4M33 21:00–23:00: quality 0.3M33 23:00–00:00: quality 0.2M33 00:00–01:00: quality 0.3M33 01:00–02:00: quality 0.2M33 02:00–03:00: quality 0.1observe M33 00:45–01:00scheduleNGC 7000V1057 CygM31M4520:0022:0000:0002:0004:0006:00

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
18:55–20:30 — nothing worth pointing at — 1.58
20:30–21:15 NGC 7000 0.75 0.52
21:15–22:00 V1057 Cyg 0.75 0.46
22:00–23:00 M31 1.0 0.31
23:00–00:00 — nothing worth pointing at — 1.0
00:00–00:45 M45 0.75 0.36
00:45–01:00 M33 0.25 0.31
01:00–07:25 — nothing worth pointing at — 6.42

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 54 21 20:30–23:00 (marginal) 89.7° at 01:05 44.3° 1.0
M42 Great Orion Nebula 43 1 — 42.9° at 05:55 87.7° 0.0
M45 Seven Sisters 71 16 00:00–01:00 (marginal) 72.5° at 04:10 63.8° 0.75
NGC 7000 North America Nebula 57 32 20:30–23:00 (marginal) 87.2° at 21:20 58.3° 0.75
V1057 Cyg 57 32 20:30–23:00 (marginal) 87.3° at 21:20 58.3° 0.75
M33 Triangulum Pinwheel 55 20 20:35–22:00 (marginal) 79.1° at 01:55 41.0° 0.25

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2025-10-05"

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"}.