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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 Tuesday, 10 June 2031 · astronomical night 23:04 → 03:36 (4.54 h) · Moon 63% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 02:10–02:20: quality 0.3M31 02:20–02:45: quality 0.4M31 02:45–03:10: quality 0.5M31 03:10–03:40: quality 0.6M31 03:40–04:30: quality 0.3M31 04:30–05:15: quality 0.1observe M31 02:40–03:40observe M31 04:10–04:30M42M45NGC 7000NGC 7000 22:15–22:30: quality 0.2NGC 7000 22:30–23:05: quality 0.3NGC 7000 23:05–23:15: quality 0.7NGC 7000 23:15–00:10: quality 0.8NGC 7000 00:10–00:50: quality 0.9NGC 7000 00:50–03:40: quality 0.7NGC 7000 03:40–03:45: quality 0.4NGC 7000 03:45–04:30: quality 0.3NGC 7000 04:30–05:15: quality 0.1observe NGC 7000 22:50–00:45observe NGC 7000 03:40–04:10V1057 CygV1057 Cyg 22:15–22:30: quality 0.2V1057 Cyg 22:30–23:05: quality 0.3V1057 Cyg 23:05–23:15: quality 0.7V1057 Cyg 23:15–00:10: quality 0.8V1057 Cyg 00:10–00:50: quality 0.9V1057 Cyg 00:50–03:40: quality 0.7V1057 Cyg 03:40–04:30: quality 0.3V1057 Cyg 04:30–05:15: quality 0.1observe V1057 Cyg 00:45–02:40M33M33 03:45–04:25: quality 0.2M33 04:25–04:30: quality 0.3M33 04:30–05:15: quality 0.1scheduleNGC 7000V1057 CygM31NGC 700022:0000:0002:0004:00

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
20:50–22:50 — nothing worth pointing at — 2.0
22:50–00:45 NGC 7000 1.92 0.76
00:45–02:40 V1057 Cyg 1.92 0.74
02:40–03:40 M31 1.0 0.54
03:40–04:10 NGC 7000 0.5 0.35
04:10–04:30 M31 0.33 0.3
04:30–05:50 — nothing worth pointing at — 1.33

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 15 unknown 02:10–03:40 (marginal) 89.5° at 08:50 56.6° 1.33
M42 Great Orion Nebula 0 unknown — 42.9° at 13:45 108.4° 0.0
M45 Seven Sisters 0 unknown — 72.5° at 11:50 84.5° 0.0
NGC 7000 North America Nebula 89 unknown 23:05–03:40 (good) 87.2° at 05:05 52.4° 2.42
V1057 Cyg 89 unknown 23:05–03:40 (good) 87.3° at 05:05 52.3° 1.92
M33 Triangulum Pinwheel 1 unknown — 79.1° at 09:40 58.5° 0.0

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2031-06-10"

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"}.