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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, 11 June 2027 · astronomical night 23:05 → 03:36 (4.52 h) · Moon 55% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 02:05–02:15: quality 0.4M31 02:15–02:30: quality 0.5M31 02:30–02:50: quality 0.6M31 02:50–03:05: quality 0.7M31 03:05–03:40: quality 0.8M31 03:40–04:30: quality 0.4M31 04:30–05:15: quality 0.1observe M31 02:05–03:30M42M45NGC 7000NGC 7000 22:10–22:15: quality 0.1NGC 7000 22:15–22:35: quality 0.2NGC 7000 22:35–23:10: quality 0.3NGC 7000 23:10–23:20: quality 0.7NGC 7000 23:20–00:45: quality 0.8NGC 7000 00:45–01:35: quality 0.9NGC 7000 01:35–03:40: quality 1.0NGC 7000 03:40–04:30: quality 0.5NGC 7000 04:30–05:15: quality 0.2observe NGC 7000 22:50–00:15observe NGC 7000 03:30–04:10V1057 CygV1057 Cyg 22:10–22:15: quality 0.1V1057 Cyg 22:15–22:35: quality 0.2V1057 Cyg 22:35–23:10: quality 0.3V1057 Cyg 23:10–23:20: quality 0.7V1057 Cyg 23:20–00:45: quality 0.8V1057 Cyg 00:45–01:35: quality 0.9V1057 Cyg 01:35–03:40: quality 1.0V1057 Cyg 03:40–04:30: quality 0.5V1057 Cyg 04:30–05:15: quality 0.2observe V1057 Cyg 00:15–02:05M33M33 03:40–03:55: quality 0.2M33 03:55–04:20: quality 0.3M33 04:20–04:30: quality 0.4M33 04:30–05:15: quality 0.1observe M33 04:10–04:30scheduleNGC 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
20:55–22:50 — nothing worth pointing at — 1.92
22:50–00:15 NGC 7000 1.42 0.67
00:15–02:05 V1057 Cyg 1.83 0.89
02:05–03:30 M31 1.42 0.64
03:30–04:10 NGC 7000 0.67 0.62
04:10–04:30 M33 0.33 0.34
04:30–05:50 — nothing worth pointing at — 1.33

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 31 unknown 02:40–03:40 (good) 89.7° at 08:45 138.5° 1.42
M42 Great Orion Nebula 0 unknown — 42.9° at 13:40 91.6° 0.0
M45 Seven Sisters 0 unknown — 72.5° at 11:45 117.2° 0.0
NGC 7000 North America Nebula 100 unknown 23:10–03:40 (good) 87.3° at 05:00 124.4° 2.08
V1057 Cyg 100 unknown 23:10–03:40 (good) 87.3° at 05:00 124.4° 1.83
M33 Triangulum Pinwheel 3 unknown 04:10–04:30 (marginal) 79.1° at 09:35 141.1° 0.33

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-06-11"

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"}.