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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 Saturday, 15 March 2025 · astronomical night 20:00 → 04:58 (8.96 h) · Moon 98% (full moon) · weather: ERA5 history

M31M31 19:00–19:30: quality 0.1M31 19:30–20:05: quality 0.2M31 20:05–20:15: quality 0.3M42M42 19:00–19:30: quality 0.1M42 19:30–20:05: quality 0.3M42 20:05–20:35: quality 0.6M42 20:35–21:00: quality 0.5M42 21:00–21:25: quality 0.4M42 21:25–21:55: quality 0.3M42 21:55–22:00: quality 0.2M42 22:00–22:15: quality 0.1observe M42 20:20–21:40M45M45 19:00–19:30: quality 0.1M45 19:30–20:05: quality 0.3M45 20:05–21:00: quality 0.6M45 21:00–21:40: quality 0.4M45 21:40–22:00: quality 0.3M45 22:00–22:15: quality 0.1observe M45 19:30–20:20observe M45 21:40–21:50NGC 7000NGC 7000 03:00–03:20: quality 0.3NGC 7000 03:20–03:45: quality 0.4NGC 7000 03:45–04:00: quality 0.5NGC 7000 04:00–05:00: quality 0.7NGC 7000 05:00–05:10: quality 0.3NGC 7000 05:10–05:35: quality 0.4NGC 7000 05:35–06:00: quality 0.1observe NGC 7000 03:05–03:55V1057 CygV1057 Cyg 03:00–03:20: quality 0.3V1057 Cyg 03:20–03:45: quality 0.4V1057 Cyg 03:45–04:00: quality 0.5V1057 Cyg 04:00–05:00: quality 0.7V1057 Cyg 05:00–05:10: quality 0.3V1057 Cyg 05:10–05:35: quality 0.4V1057 Cyg 05:35–06:00: quality 0.1observe V1057 Cyg 03:55–05:35M33M33 19:00–19:30: quality 0.1M33 19:30–19:45: quality 0.3M33 19:45–20:05: quality 0.2M33 20:05–20:10: quality 0.4M33 20:10–20:25: quality 0.3scheduleM45M42NGC 7000V1057 Cyg20:0022:0000:0002:0004:0006:00

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
19:30–20:20 M45 0.83 0.42
20:20–21:40 M42 1.33 0.45
21:40–21:50 M45 0.17 0.32
21:50–03:05 — nothing worth pointing at — 5.25
03:05–03:55 NGC 7000 0.83 0.39
03:55–05:35 V1057 Cyg 1.67 0.57
05:35–06:35 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 3 2 20:05–20:10 (marginal) 89.5° at 13:30 145.5° 0.0
M42 Great Orion Nebula 30 20 20:05–21:40 (marginal) 42.9° at 18:25 107.3° 1.33
M45 Seven Sisters 36 24 20:05–20:35 (good) 72.5° at 16:35 133.9° 1.0
NGC 7000 North America Nebula 30 26 04:00–05:00 (good) 87.3° at 09:45 117.8° 0.83
V1057 Cyg 30 26 04:00–05:00 (good) 87.3° at 09:45 117.8° 1.67
M33 Triangulum Pinwheel 5 4 20:05–20:20 (marginal) 79.1° at 14:25 153.8° 0.0

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2025-03-15"

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"}.