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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 Friday, 01 May 2026 · astronomical night 22:06 → 04:28 (6.36 h) · Moon 100% (full moon) · weather: ERA5 history

M31M31 04:45–05:10: quality 0.1M42M45NGC 7000NGC 7000 01:00–01:50: quality 0.2NGC 7000 01:50–02:00: quality 0.3NGC 7000 02:00–02:25: quality 0.6NGC 7000 02:25–03:45: quality 0.7NGC 7000 03:45–04:00: quality 0.8NGC 7000 04:00–04:05: quality 0.5NGC 7000 04:05–04:30: quality 0.6NGC 7000 04:30–05:00: quality 0.3NGC 7000 05:00–05:10: quality 0.1observe NGC 7000 03:20–04:30V1057 CygV1057 Cyg 01:00–01:55: quality 0.2V1057 Cyg 01:55–02:00: quality 0.3V1057 Cyg 02:00–02:25: quality 0.6V1057 Cyg 02:25–03:45: quality 0.7V1057 Cyg 03:45–04:00: quality 0.8V1057 Cyg 04:00–04:05: quality 0.5V1057 Cyg 04:05–04:30: quality 0.6V1057 Cyg 04:30–05:00: quality 0.3V1057 Cyg 05:00–05:10: quality 0.1observe V1057 Cyg 02:00–03:20M33scheduleV1057 CygNGC 700022:0000:0002:0004:0006:00

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
20:15–02:00 — nothing worth pointing at — 5.75
02:00–03:20 V1057 Cyg 1.33 0.67
03:20–04:30 NGC 7000 1.17 0.66
04:30–06:20 — nothing worth pointing at — 1.83

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 1 0 — 89.7° at 11:25 147.7° 0.0
M42 Great Orion Nebula 0 0 — 42.9° at 16:20 129.7° 0.0
M45 Seven Sisters 0 0 — 72.5° at 14:30 164.1° 0.0
NGC 7000 North America Nebula 57 42 02:00–04:00 (good) 87.3° at 07:40 107.4° 1.17
V1057 Cyg 56 42 02:00–04:00 (good) 87.3° at 07:40 107.5° 1.33
M33 Triangulum Pinwheel 0 0 — 79.1° at 12:20 162.0° 0.0

Left out


💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-05-01"

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"}.