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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 Thursday, 12 September 2030 · astronomical night 21:11 → 05:23 (8.21 h) · Moon 99% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 20:30–20:40: quality 0.1M31 20:40–21:15: quality 0.2M31 21:15–00:40: quality 0.4M31 00:40–03:25: quality 0.3M31 03:25–05:25: quality 0.4M31 05:25–06:00: quality 0.2M31 06:00–06:35: quality 0.1observe M31 23:40–01:10M42M42 03:45–04:05: quality 0.3M42 04:05–04:30: quality 0.4M42 04:30–05:05: quality 0.5M42 05:05–05:25: quality 0.6M42 05:25–06:00: quality 0.3M42 06:00–06:35: quality 0.1observe M42 04:10–05:25M45M45 00:05–00:25: quality 0.2M45 00:25–00:55: quality 0.3M45 00:55–03:15: quality 0.4M45 03:15–05:25: quality 0.5M45 05:25–06:00: quality 0.3M45 06:00–06:35: quality 0.1observe M45 01:10–02:40NGC 7000NGC 7000 20:05–20:40: quality 0.1NGC 7000 20:40–21:15: quality 0.3NGC 7000 21:15–22:20: quality 0.6NGC 7000 22:20–01:50: quality 0.5NGC 7000 01:50–05:00: quality 0.4NGC 7000 05:00–05:25: quality 0.3NGC 7000 05:25–05:50: quality 0.1observe NGC 7000 20:40–22:10V1057 CygV1057 Cyg 20:05–20:40: quality 0.1V1057 Cyg 20:40–21:15: quality 0.3V1057 Cyg 21:15–22:20: quality 0.6V1057 Cyg 22:20–01:45: quality 0.5V1057 Cyg 01:45–05:00: quality 0.4V1057 Cyg 05:00–05:25: quality 0.3V1057 Cyg 05:25–05:50: quality 0.1observe V1057 Cyg 22:10–23:40M33M33 21:30–21:55: quality 0.2M33 21:55–04:10: quality 0.3M33 04:10–05:25: quality 0.4M33 05:25–06:00: quality 0.2M33 06:00–06:35: quality 0.1observe M33 02:40–04:10scheduleNGC 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
20:40–22:10 NGC 7000 1.5 0.48
22:10–23:40 V1057 Cyg 1.5 0.52
23:40–01:10 M31 1.5 0.36
01:10–02:40 M45 1.5 0.4
02:40–04:10 M33 1.5 0.33
04:10–05:25 M42 1.25 0.5
05:25–07:00 — nothing worth pointing at — 1.58

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 36 unknown 21:15–05:25 (marginal) 89.5° at 02:35 36.9° 1.5
M42 Great Orion Nebula 14 unknown 03:55–05:25 (marginal) 42.9° at 07:30 83.6° 1.25
M45 Seven Sisters 33 unknown 00:40–05:25 (marginal) 72.5° at 05:40 56.7° 1.5
NGC 7000 North America Nebula 60 unknown 21:15–21:20 (good) 87.2° at 22:55 56.0° 1.5
V1057 Cyg 60 unknown 21:15–21:20 (good) 87.3° at 22:55 55.9° 1.5
M33 Triangulum Pinwheel 28 unknown 22:15–05:25 (marginal) 79.1° at 03:30 33.1° 1.5
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2030-09-12"

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"}.