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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, 05 September 2042 · astronomical night 21:24 → 05:15 (7.84 h) · Moon 59% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 20:30–20:50: quality 0.1M31 20:50–21:15: quality 0.3M31 21:15–21:25: quality 0.4M31 21:25–22:20: quality 0.8M31 22:20–22:50: quality 0.9M31 22:50–03:10: quality 0.7M31 03:10–05:20: quality 0.6M31 05:20–05:55: quality 0.3M31 05:55–06:25: quality 0.1observe M31 23:50–01:20observe M31 05:20–05:50M42M42 04:10–04:15: quality 0.2M42 04:15–04:40: quality 0.3M42 04:40–05:10: quality 0.4M42 05:10–05:20: quality 0.5M42 05:20–05:55: quality 0.2M42 05:55–06:25: quality 0.1observe M42 04:30–05:20M45M45 00:35–00:50: quality 0.3M45 00:50–01:10: quality 0.4M45 01:10–02:55: quality 0.5M45 02:55–05:15: quality 0.6M45 05:15–05:20: quality 0.5M45 05:20–05:55: quality 0.3M45 05:55–06:25: quality 0.1observe M45 02:50–04:30NGC 7000NGC 7000 20:20–20:40: quality 0.1NGC 7000 20:40–20:50: quality 0.2NGC 7000 20:50–21:25: quality 0.5NGC 7000 21:25–22:50: quality 1.0NGC 7000 22:50–00:10: quality 0.9NGC 7000 00:10–02:55: quality 0.8NGC 7000 02:55–04:30: quality 0.7NGC 7000 04:30–05:20: quality 0.6NGC 7000 05:20–05:30: quality 0.3NGC 7000 05:30–05:55: quality 0.2NGC 7000 05:55–06:10: quality 0.1observe NGC 7000 20:50–22:20V1057 CygV1057 Cyg 20:20–20:40: quality 0.1V1057 Cyg 20:40–20:50: quality 0.2V1057 Cyg 20:50–21:25: quality 0.5V1057 Cyg 21:25–22:50: quality 1.0V1057 Cyg 22:50–00:10: quality 0.9V1057 Cyg 00:10–02:55: quality 0.8V1057 Cyg 02:55–04:30: quality 0.7V1057 Cyg 04:30–05:20: quality 0.6V1057 Cyg 05:20–05:30: quality 0.3V1057 Cyg 05:30–05:55: quality 0.2V1057 Cyg 05:55–06:10: quality 0.1observe V1057 Cyg 22:20–23:50M33M33 22:00–22:05: quality 0.4M33 22:05–22:20: quality 0.5M33 22:20–22:35: quality 0.6M33 22:35–22:50: quality 0.7M33 22:50–00:40: quality 0.6M33 00:40–02:00: quality 0.7M33 02:00–05:20: quality 0.6M33 05:20–05:55: quality 0.3M33 05:55–06:25: quality 0.1observe M33 01:20–02:50scheduleNGC 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
19:45–20:50 — nothing worth pointing at — 1.08
20:50–22:20 NGC 7000 1.5 0.81
22:20–23:50 V1057 Cyg 1.5 0.91
23:50–01:20 M31 1.5 0.73
01:20–02:50 M33 1.5 0.65
02:50–04:30 M45 1.67 0.56
04:30–05:20 M42 0.83 0.39
05:20–05:50 M31 0.5 0.3
05:50–06:55 — nothing worth pointing at — 1.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 88 unknown 21:25–05:20 (good) 89.8° at 03:05 44.5° 2.0
M42 Great Orion Nebula 7 unknown 04:30–05:20 (marginal) 42.9° at 07:55 37.4° 0.83
M45 Seven Sisters 38 unknown 00:40–05:20 (marginal) 72.5° at 06:10 3.7° 1.67
NGC 7000 North America Nebula 100 unknown 21:25–05:10 (good) 87.2° at 23:20 83.6° 1.5
V1057 Cyg 100 unknown 21:25–05:10 (good) 87.3° at 23:20 83.6° 1.5
M33 Triangulum Pinwheel 73 unknown 22:55–03:30 (good) 79.2° at 03:55 33.3° 1.5

💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2042-09-05"

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"}.