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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, 07 September 2047 · astronomical night 21:21 → 05:17 (7.94 h) · Moon 88% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 20:20–20:50: quality 0.1M31 20:50–21:25: quality 0.2M31 21:25–23:30: quality 0.5M31 23:30–02:30: quality 0.4M31 02:30–05:10: quality 0.3M31 05:10–05:20: quality 0.4M31 05:20–05:55: quality 0.2M31 05:55–06:30: quality 0.1observe M31 23:40–01:05M42M42 04:05–04:15: quality 0.2M42 04:15–04:45: quality 0.3M42 04:45–05:20: quality 0.4M42 05:20–05:55: quality 0.2M42 05:55–06:30: quality 0.1observe M42 04:30–05:20M45M45 00:30–00:55: quality 0.2M45 00:55–03:45: quality 0.3M45 03:45–05:20: quality 0.4M45 05:20–05:55: quality 0.2M45 05:55–06:30: quality 0.1observe M45 02:30–04:30NGC 7000NGC 7000 20:15–20:30: quality 0.1NGC 7000 20:30–20:50: quality 0.2NGC 7000 20:50–21:25: quality 0.4NGC 7000 21:25–23:10: quality 0.7NGC 7000 23:10–02:05: quality 0.6NGC 7000 02:05–04:25: quality 0.5NGC 7000 04:25–05:20: quality 0.4NGC 7000 05:20–05:45: quality 0.2NGC 7000 05:45–05:55: quality 0.1observe NGC 7000 20:50–22:15V1057 CygV1057 Cyg 20:15–20:30: quality 0.1V1057 Cyg 20:30–20:50: quality 0.2V1057 Cyg 20:50–21:25: quality 0.4V1057 Cyg 21:25–23:05: quality 0.7V1057 Cyg 23:05–02:05: quality 0.6V1057 Cyg 02:05–04:25: quality 0.5V1057 Cyg 04:25–05:20: quality 0.4V1057 Cyg 05:20–05:45: quality 0.2V1057 Cyg 05:45–05:55: quality 0.1observe V1057 Cyg 22:15–23:40M33M33 21:55–22:00: quality 0.2M33 22:00–22:30: quality 0.3M33 22:30–02:30: quality 0.4M33 02:30–05:10: quality 0.3M33 05:10–05:20: quality 0.4M33 05:20–05:55: quality 0.2M33 05:55–06:30: quality 0.1observe M33 01:05–02:30scheduleNGC 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
19:40–20:50 — nothing worth pointing at — 1.17
20:50–22:15 NGC 7000 1.42 0.57
22:15–23:40 V1057 Cyg 1.42 0.66
23:40–01:05 M31 1.42 0.43
01:05–02:30 M33 1.42 0.37
02:30–04:30 M45 2.0 0.35
04:30–05:20 M42 0.83 0.39
05:20–06:55 — nothing worth pointing at — 1.58

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 42 unknown 21:25–05:20 (marginal) 89.7° at 03:00 28.5° 1.42
M42 Great Orion Nebula 7 unknown 04:30–05:20 (marginal) 42.9° at 07:50 64.5° 0.83
M45 Seven Sisters 16 unknown 01:15–05:20 (marginal) 72.6° at 06:00 34.0° 2.0
NGC 7000 North America Nebula 73 unknown 21:25–00:25 (good) 87.2° at 23:15 63.7° 1.42
V1057 Cyg 73 unknown 21:25–00:25 (good) 87.2° at 23:15 63.6° 1.42
M33 Triangulum Pinwheel 29 unknown 22:15–05:20 (marginal) 79.2° at 03:50 16.2° 1.42
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2047-09-07"

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"}.