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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, 03 September 2039 · astronomical night 21:29 → 05:12 (7.71 h) · Moon 98% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 20:35–20:45: quality 0.1M31 20:55–21:30: quality 0.2M31 21:30–05:15: quality 0.5M31 05:15–05:50: quality 0.3M31 05:50–06:25: quality 0.1observe M31 23:55–01:25M42M42 04:20–04:35: quality 0.3M42 04:35–05:00: quality 0.4M42 05:00–05:15: quality 0.5M42 05:15–05:50: quality 0.3M42 05:50–06:25: quality 0.1observe M42 04:25–05:15M45M45 00:45–00:50: quality 0.2M45 00:50–01:15: quality 0.3M45 01:15–01:50: quality 0.4M45 01:50–04:00: quality 0.5M45 04:00–05:15: quality 0.6M45 05:15–05:50: quality 0.3M45 05:50–06:25: quality 0.1observe M45 02:55–04:25observe M45 05:20–05:50NGC 7000NGC 7000 20:20–20:55: quality 0.1NGC 7000 20:55–21:15: quality 0.4NGC 7000 21:15–21:30: quality 0.3NGC 7000 21:30–22:15: quality 0.7NGC 7000 22:15–01:25: quality 0.6NGC 7000 01:25–05:15: quality 0.5NGC 7000 05:15–05:50: quality 0.2NGC 7000 05:50–06:00: quality 0.1observe NGC 7000 20:55–22:25V1057 CygV1057 Cyg 20:20–20:55: quality 0.1V1057 Cyg 20:55–21:15: quality 0.4V1057 Cyg 21:15–21:30: quality 0.3V1057 Cyg 21:30–22:15: quality 0.7V1057 Cyg 22:15–01:25: quality 0.6V1057 Cyg 01:25–05:15: quality 0.5V1057 Cyg 05:15–05:50: quality 0.2V1057 Cyg 05:50–06:00: quality 0.1observe V1057 Cyg 22:25–23:55M33M33 22:10–22:15: quality 0.2M33 22:15–22:45: quality 0.3M33 22:45–04:00: quality 0.4M33 04:00–05:15: quality 0.5M33 05:15–05:25: quality 0.2M33 05:25–05:50: quality 0.3M33 05:50–06:25: quality 0.1observe M33 01:25–02:55scheduleNGC 7000V1057 CygM31M33M45M4220:0022:0000:0002:0004:0006:00

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
19:50–20:55 — nothing worth pointing at — 1.08
20:55–22:25 NGC 7000 1.5 0.54
22:25–23:55 V1057 Cyg 1.5 0.61
23:55–01:25 M31 1.5 0.48
01:25–02:55 M33 1.5 0.43
02:55–04:25 M45 1.5 0.53
04:25–05:15 M42 0.83 0.41
05:15–05:20 — nothing worth pointing at — 0.08
05:20–05:50 M45 0.5 0.3
05:50–06:50 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 51 unknown 21:30–05:15 (marginal) 89.7° at 03:15 49.1° 1.5
M42 Great Orion Nebula 7 unknown 04:25–05:15 (marginal) 42.9° at 08:05 85.5° 0.83
M45 Seven Sisters 36 unknown 01:00–05:15 (marginal) 72.5° at 06:15 64.9° 2.0
NGC 7000 North America Nebula 69 unknown 21:30–23:30 (good) 87.2° at 23:30 63.8° 1.5
V1057 Cyg 69 unknown 21:30–23:30 (good) 87.3° at 23:30 63.7° 1.5
M33 Triangulum Pinwheel 39 unknown 22:30–05:15 (marginal) 79.2° at 04:05 44.5° 1.5
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2039-09-03"

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"}.