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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 Tuesday, 10 September 2030 · astronomical night 21:14 → 05:21 (8.11 h) · Moon 99% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 20:35–20:45: quality 0.1M31 20:45–21:15: quality 0.2M31 21:15–03:30: quality 0.5M31 03:30–05:25: quality 0.6M31 05:25–06:00: quality 0.3M31 06:00–06:30: quality 0.1observe M31 00:15–01:45M42M42 03:50–03:55: quality 0.3M42 03:55–04:15: quality 0.4M42 04:15–04:30: quality 0.5M42 04:30–04:50: quality 0.6M42 04:50–05:25: quality 0.7M42 05:25–06:00: quality 0.4M42 06:00–06:30: quality 0.1observe M42 04:45–06:00M45M45 00:15–00:35: quality 0.3M45 00:35–00:55: quality 0.4M45 00:55–01:40: quality 0.5M45 01:40–03:10: quality 0.6M45 03:10–05:15: quality 0.7M45 05:15–05:25: quality 0.8M45 05:25–06:00: quality 0.4M45 06:00–06:20: quality 0.1M45 06:20–06:30: quality 0.2observe M45 01:45–03:15NGC 7000NGC 7000 20:10–20:45: quality 0.1NGC 7000 20:45–21:15: quality 0.3NGC 7000 21:15–05:00: quality 0.5NGC 7000 05:00–05:25: quality 0.4NGC 7000 05:25–05:45: quality 0.2NGC 7000 05:45–05:55: quality 0.1observe NGC 7000 21:15–22:45V1057 CygV1057 Cyg 20:10–20:45: quality 0.1V1057 Cyg 20:45–21:15: quality 0.3V1057 Cyg 21:15–04:55: quality 0.5V1057 Cyg 04:55–05:25: quality 0.4V1057 Cyg 05:25–05:45: quality 0.2V1057 Cyg 05:45–05:55: quality 0.1observe V1057 Cyg 22:45–00:15M33M33 21:40–21:50: quality 0.2M33 21:50–22:15: quality 0.3M33 22:15–00:00: quality 0.4M33 00:00–03:15: quality 0.5M33 03:15–05:25: quality 0.6M33 05:25–06:00: quality 0.3M33 06:00–06:30: quality 0.1observe M33 03:15–04:45scheduleNGC 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
19:35–21:15 — nothing worth pointing at — 1.67
21:15–22:45 NGC 7000 1.5 0.52
22:45–00:15 V1057 Cyg 1.5 0.48
00:15–01:45 M31 1.5 0.49
01:45–03:15 M45 1.5 0.6
03:15–04:45 M33 1.5 0.58
04:45–06:00 M42 1.25 0.53
06:00–07:00 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 64 unknown 04:35–05:25 (good) 89.7° at 02:45 55.6° 1.5
M42 Great Orion Nebula 20 unknown 04:40–05:25 (good) 42.9° at 07:35 107.0° 1.25
M45 Seven Sisters 64 unknown 02:30–05:25 (good) 72.5° at 05:50 83.1° 1.5
NGC 7000 North America Nebula 54 unknown 21:15–05:25 (marginal) 87.2° at 23:00 52.6° 1.5
V1057 Cyg 54 unknown 21:15–05:25 (marginal) 87.3° at 23:00 52.5° 1.5
M33 Triangulum Pinwheel 65 unknown 04:25–05:25 (good) 79.1° at 03:35 57.2° 1.5
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2030-09-10"

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"}.