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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 Monday, 25 September 2045 · astronomical night 20:45 → 05:39 (8.91 h) · Moon 100% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:45–20:15: quality 0.1M31 20:15–20:50: quality 0.2M31 20:50–04:20: quality 0.4M31 04:20–05:40: quality 0.5M31 05:40–06:15: quality 0.2M31 06:15–06:50: quality 0.1observe M31 00:00–01:40M42M42 02:50–03:10: quality 0.3M42 03:10–03:35: quality 0.4M42 03:35–04:00: quality 0.5M42 04:00–05:40: quality 0.6M42 05:40–06:15: quality 0.3M42 06:15–06:50: quality 0.1observe M42 05:00–06:15M45M45 23:15–23:30: quality 0.2M45 23:30–00:00: quality 0.3M45 00:00–01:50: quality 0.4M45 01:50–04:05: quality 0.5M45 04:05–05:40: quality 0.6M45 05:40–06:15: quality 0.3M45 06:15–06:50: quality 0.1observe M45 01:40–03:20NGC 7000NGC 7000 19:45–20:15: quality 0.1NGC 7000 20:15–20:50: quality 0.3NGC 7000 20:50–21:25: quality 0.6NGC 7000 21:25–01:10: quality 0.5NGC 7000 01:10–04:10: quality 0.4NGC 7000 04:10–04:50: quality 0.3NGC 7000 04:50–04:55: quality 0.2observe NGC 7000 20:15–20:25observe NGC 7000 20:50–22:20V1057 CygV1057 Cyg 19:45–20:15: quality 0.1V1057 Cyg 20:15–20:50: quality 0.3V1057 Cyg 20:50–21:25: quality 0.6V1057 Cyg 21:25–01:10: quality 0.5V1057 Cyg 01:10–04:10: quality 0.4V1057 Cyg 04:10–04:50: quality 0.3V1057 Cyg 04:50–04:55: quality 0.2observe V1057 Cyg 22:20–00:00M33M33 20:40–20:50: quality 0.1M33 20:50–21:00: quality 0.2M33 21:00–02:15: quality 0.3M33 02:15–04:40: quality 0.4M33 04:40–05:40: quality 0.5M33 05:40–06:10: quality 0.2M33 06:10–06:15: quality 0.3M33 06:15–06:50: quality 0.1observe M33 03:20–05:00scheduleNGC 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
19:10–20:15 — nothing worth pointing at — 1.08
20:15–20:25 NGC 7000 0.17 0.3
20:25–20:50 — nothing worth pointing at — 0.42
20:50–22:20 NGC 7000 1.5 0.54
22:20–00:00 V1057 Cyg 1.67 0.49
00:00–01:40 M31 1.67 0.36
01:40–03:20 M45 1.67 0.48
03:20–05:00 M33 1.67 0.43
05:00–06:15 M42 1.25 0.49
06:15–07:15 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 47 unknown 20:50–05:40 (marginal) 89.8° at 01:45 40.2° 1.67
M42 Great Orion Nebula 28 unknown 04:50–05:40 (good) 42.9° at 06:35 85.8° 1.25
M45 Seven Sisters 51 unknown 05:15–05:40 (good) 72.6° at 04:50 60.1° 1.67
NGC 7000 North America Nebula 56 unknown 20:50–04:30 (marginal) 87.2° at 22:00 56.6° 1.67
V1057 Cyg 56 unknown 20:50–04:30 (marginal) 87.2° at 22:00 56.6° 1.67
M33 Triangulum Pinwheel 42 unknown 21:20–05:40 (marginal) 79.2° at 02:35 36.7° 1.67
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2045-09-25"

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"}.