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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, 10 April 2027 · astronomical night 21:34 → 05:09 (7.59 h) · Moon 18% (waxing crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 06:10–06:20: quality 0.1M42M42 20:25–21:00: quality 0.1M42 21:00–21:10: quality 0.3M42 21:10–21:35: quality 0.2M45M45 20:25–21:00: quality 0.1M45 21:00–21:10: quality 0.3M45 21:10–21:35: quality 0.2NGC 7000NGC 7000 02:15–02:25: quality 0.4NGC 7000 02:25–02:40: quality 0.5NGC 7000 02:40–02:55: quality 0.6NGC 7000 02:55–03:15: quality 0.7NGC 7000 03:15–04:10: quality 0.8NGC 7000 04:10–05:10: quality 0.9NGC 7000 05:10–05:50: quality 0.5NGC 7000 05:50–06:20: quality 0.1observe NGC 7000 02:15–04:05V1057 CygV1057 Cyg 02:15–02:25: quality 0.4V1057 Cyg 02:25–02:40: quality 0.5V1057 Cyg 02:40–03:00: quality 0.6V1057 Cyg 03:00–03:15: quality 0.7V1057 Cyg 03:15–04:10: quality 0.8V1057 Cyg 04:10–05:10: quality 0.9V1057 Cyg 05:10–05:50: quality 0.5V1057 Cyg 05:50–06:20: quality 0.1observe V1057 Cyg 04:05–05:50M33scheduleNGC 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
19:55–02:15 — nothing worth pointing at — 6.33
02:15–04:05 NGC 7000 1.83 0.69
04:05–05:50 V1057 Cyg 1.75 0.72
05:50–06:50 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 0 unknown — 89.6° at 12:50 49.4° 0.0
M42 Great Orion Nebula 1 unknown — 42.9° at 17:45 35.3° 0.0
M45 Seven Sisters 1 unknown — 72.5° at 15:55 11.3° 0.0
NGC 7000 North America Nebula 59 unknown 02:50–05:10 (good) 87.2° at 09:05 86.9° 1.83
V1057 Cyg 59 unknown 02:50–05:10 (good) 87.3° at 09:05 87.0° 1.75
M33 Triangulum Pinwheel 0 unknown — 79.1° at 13:45 39.7° 0.0

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-04-10"

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"}.