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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 Thursday, 10 June 2027 · astronomical night 23:04 → 03:36 (4.54 h) · Moon 44% (waxing crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 02:10–02:20: quality 0.4M31 02:20–02:35: quality 0.5M31 02:35–02:50: quality 0.6M31 02:50–03:10: quality 0.7M31 03:10–03:40: quality 0.8M31 03:40–04:30: quality 0.4M31 04:30–05:15: quality 0.1observe M31 02:10–03:35M42M45NGC 7000NGC 7000 22:15–22:35: quality 0.2NGC 7000 22:35–23:05: quality 0.3NGC 7000 23:05–23:20: quality 0.7NGC 7000 23:20–00:40: quality 0.8NGC 7000 00:40–01:40: quality 0.9NGC 7000 01:40–03:40: quality 1.0NGC 7000 03:40–04:30: quality 0.5NGC 7000 04:30–05:15: quality 0.2observe NGC 7000 22:55–00:20observe NGC 7000 03:35–04:10V1057 CygV1057 Cyg 22:15–22:35: quality 0.2V1057 Cyg 22:35–23:05: quality 0.3V1057 Cyg 23:05–23:20: quality 0.7V1057 Cyg 23:20–00:40: quality 0.8V1057 Cyg 00:40–01:40: quality 0.9V1057 Cyg 01:40–03:40: quality 1.0V1057 Cyg 03:40–04:30: quality 0.5V1057 Cyg 04:30–05:15: quality 0.2observe V1057 Cyg 00:20–02:10M33M33 03:45–03:55: quality 0.2M33 03:55–04:25: quality 0.3M33 04:25–04:30: 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
20:50–22:55 — nothing worth pointing at — 2.08
22:55–00:20 NGC 7000 1.42 0.72
00:20–02:10 V1057 Cyg 1.83 0.91
02:10–03:35 M31 1.42 0.64
03:35–04:10 NGC 7000 0.58 0.57
04:10–04:30 M33 0.33 0.33
04:30–05:50 — nothing worth pointing at — 1.33

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 30 unknown 02:45–03:40 (good) 89.5° at 08:50 128.1° 1.42
M42 Great Orion Nebula 0 unknown — 42.9° at 13:45 80.0° 0.0
M45 Seven Sisters 0 unknown — 72.5° at 11:50 103.4° 0.0
NGC 7000 North America Nebula 100 unknown 23:05–03:40 (good) 87.2° at 05:05 125.0° 2.0
V1057 Cyg 100 unknown 23:05–03:40 (good) 87.3° at 05:05 125.1° 1.83
M33 Triangulum Pinwheel 3 unknown 04:10–04:30 (marginal) 79.1° at 09:40 128.2° 0.33

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-06-10"

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"}.