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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 Monday, 10 May 2027 · astronomical night 22:21 → 04:13 (5.86 h) · Moon 25% (waxing crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 04:15–04:30: quality 0.2M31 04:30–05:00: quality 0.3M31 05:00–05:35: quality 0.1observe M31 04:45–05:00M42M45NGC 7000NGC 7000 00:15–00:30: quality 0.4NGC 7000 00:30–00:45: quality 0.5NGC 7000 00:45–01:05: quality 0.6NGC 7000 01:05–01:15: quality 0.7NGC 7000 01:15–02:10: quality 0.8NGC 7000 02:10–03:40: quality 0.9NGC 7000 03:40–04:15: quality 1.0NGC 7000 04:15–05:00: quality 0.5NGC 7000 05:00–05:35: quality 0.2observe NGC 7000 00:15–01:55V1057 CygV1057 Cyg 00:15–00:30: quality 0.4V1057 Cyg 00:30–00:45: quality 0.5V1057 Cyg 00:45–01:05: quality 0.6V1057 Cyg 01:05–01:15: quality 0.7V1057 Cyg 01:15–02:10: quality 0.8V1057 Cyg 02:10–03:40: quality 0.9V1057 Cyg 03:40–04:15: quality 1.0V1057 Cyg 04:15–05:00: quality 0.5V1057 Cyg 05:00–05:35: quality 0.2observe V1057 Cyg 01:55–04:45M33scheduleNGC 7000V1057 Cyg22:0000:0002:0004:0006:00

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
20:25–00:15 — nothing worth pointing at — 3.83
00:15–01:55 NGC 7000 1.67 0.65
01:55–04:45 V1057 Cyg 2.83 0.84
04:45–05:00 M31 0.25 0.32
05:00–06:10 — nothing worth pointing at — 1.17

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 2 unknown 04:45–05:00 (marginal) 89.7° at 10:50 82.3° 0.25
M42 Great Orion Nebula 0 unknown — 42.9° at 15:45 40.3° 0.0
M45 Seven Sisters 0 unknown — 72.5° at 13:55 50.2° 0.0
NGC 7000 North America Nebula 91 unknown 00:55–04:15 (good) 87.3° at 07:05 108.5° 1.67
V1057 Cyg 91 unknown 00:55–04:15 (good) 87.3° at 07:05 108.6° 2.83
M33 Triangulum Pinwheel 0 unknown — 79.1° at 11:40 76.8° 0.0

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-05-10"

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"}.