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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 Wednesday, 12 September 2046 · astronomical night 21:10 → 05:24 (8.22 h) · Moon 95% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 20:20–20:40: quality 0.1M31 20:40–21:05: quality 0.2M31 21:05–21:15: quality 0.3M31 21:15–22:50: quality 0.5M31 22:50–02:45: quality 0.6M31 02:45–05:00: quality 0.7M31 05:00–05:25: quality 1.0M31 05:25–06:00: quality 0.5M31 06:00–06:35: quality 0.1observe M31 00:10–01:40M42M42 03:45–04:00: quality 0.4M42 04:00–04:15: quality 0.5M42 04:15–04:35: quality 0.6M42 04:35–05:00: quality 0.7M42 05:00–05:25: quality 0.8M42 05:25–06:00: quality 0.4M42 06:00–06:35: quality 0.1observe M42 04:40–06:00M45M45 00:10–00:15: quality 0.3M45 00:15–00:35: quality 0.4M45 00:35–00:55: quality 0.5M45 00:55–01:45: quality 0.6M45 01:45–03:05: quality 0.7M45 03:05–05:00: quality 0.8M45 05:00–05:25: quality 1.0M45 05:25–06:00: quality 0.5M45 06:00–06:35: quality 0.2observe M45 01:40–03:10NGC 7000NGC 7000 20:05–20:40: quality 0.1NGC 7000 20:40–21:15: quality 0.3NGC 7000 21:15–22:40: quality 0.6NGC 7000 22:40–00:45: quality 0.5NGC 7000 00:45–04:40: quality 0.6NGC 7000 04:40–05:00: quality 0.5NGC 7000 05:00–05:05: quality 0.7NGC 7000 05:05–05:20: quality 0.6NGC 7000 05:20–05:25: quality 0.5NGC 7000 05:25–05:30: quality 0.3NGC 7000 05:30–05:50: quality 0.2observe NGC 7000 20:40–20:45observe NGC 7000 21:15–22:40V1057 CygV1057 Cyg 20:05–20:40: quality 0.1V1057 Cyg 20:40–21:15: quality 0.3V1057 Cyg 21:15–22:35: quality 0.6V1057 Cyg 22:35–00:45: quality 0.5V1057 Cyg 00:45–04:40: quality 0.6V1057 Cyg 04:40–05:00: quality 0.5V1057 Cyg 05:00–05:05: quality 0.7V1057 Cyg 05:05–05:20: quality 0.6V1057 Cyg 05:20–05:25: quality 0.5V1057 Cyg 05:25–05:30: quality 0.3V1057 Cyg 05:30–05:50: quality 0.2observe V1057 Cyg 22:40–00:10M33M33 21:30–21:55: quality 0.3M33 21:55–22:20: quality 0.4M33 22:20–23:55: quality 0.5M33 23:55–02:20: quality 0.6M33 02:20–05:00: quality 0.7M33 05:00–05:25: quality 1.0M33 05:25–06:00: quality 0.5M33 06:00–06:35: quality 0.1observe M33 03:10–04:40scheduleNGC 7000V1057 CygM31M45M33M4220:0022:0000:0002:0004:0006:00

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
19:35–20:40 — nothing worth pointing at — 1.08
20:40–20:45 NGC 7000 0.08 0.3
20:45–21:15 — nothing worth pointing at — 0.5
21:15–22:40 NGC 7000 1.42 0.56
22:40–00:10 V1057 Cyg 1.5 0.54
00:10–01:40 M31 1.5 0.61
01:40–03:10 M45 1.5 0.7
03:10–04:40 M33 1.5 0.71
04:40–06:00 M42 1.33 0.62
06:00–07:00 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 00:35–05:25 (good) 89.6° at 02:40 66.8° 1.5
M42 Great Orion Nebula 29 unknown 04:25–05:25 (good) 42.9° at 07:30 115.6° 1.33
M45 Seven Sisters 100 unknown 01:00–05:25 (good) 72.6° at 05:40 95.0° 1.5
NGC 7000 North America Nebula 67 unknown 05:00–05:15 (good) 87.2° at 22:55 56.9° 1.5
V1057 Cyg 67 unknown 05:00–05:15 (good) 87.2° at 22:55 56.8° 1.5
M33 Triangulum Pinwheel 100 unknown 00:50–05:25 (good) 79.2° at 03:30 69.3° 1.5
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2046-09-12"

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"}.