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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 Sunday, 15 September 2030 · astronomical night 21:05 → 05:27 (8.37 h) · Moon 84% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 20:00–20:35: quality 0.1M31 20:35–20:40: quality 0.3M31 20:40–21:10: quality 0.4M31 21:10–01:10: quality 0.5M31 01:10–05:30: quality 0.4M31 05:30–06:05: quality 0.2M31 06:05–06:35: quality 0.1observe M31 23:35–01:05M42M42 03:30–03:50: quality 0.2M42 03:50–04:25: quality 0.3M42 04:25–05:30: quality 0.4M42 05:30–06:05: quality 0.2M42 06:05–06:35: quality 0.1observe M42 04:05–05:30M45M45 23:55–00:10: quality 0.2M45 00:10–00:45: quality 0.3M45 00:45–05:30: quality 0.4M45 05:30–06:05: quality 0.2M45 06:05–06:35: quality 0.1observe M45 02:35–04:05NGC 7000NGC 7000 20:00–20:35: quality 0.2NGC 7000 20:35–21:10: quality 0.5NGC 7000 21:10–22:15: quality 0.8NGC 7000 22:15–01:10: quality 0.7NGC 7000 01:10–02:55: quality 0.6NGC 7000 02:55–04:35: quality 0.5NGC 7000 04:35–05:05: quality 0.4NGC 7000 05:05–05:30: quality 0.3NGC 7000 05:30–05:35: quality 0.1observe NGC 7000 20:35–22:05V1057 CygV1057 Cyg 20:00–20:35: quality 0.2V1057 Cyg 20:35–21:10: quality 0.5V1057 Cyg 21:10–22:15: quality 0.8V1057 Cyg 22:15–01:10: quality 0.7V1057 Cyg 01:10–02:55: quality 0.6V1057 Cyg 02:55–04:35: quality 0.5V1057 Cyg 04:35–05:05: quality 0.4V1057 Cyg 05:05–05:30: quality 0.3V1057 Cyg 05:30–05:35: quality 0.1observe V1057 Cyg 22:05–23:35M33M33 21:20–21:45: quality 0.3M33 21:45–22:10: quality 0.4M33 22:10–00:25: quality 0.5M33 00:25–05:30: quality 0.4M33 05:30–06:05: quality 0.2M33 06:05–06:35: quality 0.1observe M33 01:05–02:35scheduleNGC 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
19:30–20:35 — nothing worth pointing at — 1.08
20:35–22:05 NGC 7000 1.5 0.67
22:05–23:35 V1057 Cyg 1.5 0.73
23:35–01:05 M31 1.5 0.49
01:05–02:35 M33 1.5 0.41
02:35–04:05 M45 1.5 0.36
04:05–05:30 M42 1.42 0.38
05:30–07:05 — nothing worth pointing at — 1.58

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 55 unknown 20:35–05:30 (marginal) 89.7° at 02:25 33.0° 1.5
M42 Great Orion Nebula 9 unknown 04:05–05:30 (marginal) 42.9° at 07:15 51.3° 1.42
M45 Seven Sisters 19 unknown 00:30–05:30 (marginal) 72.5° at 05:30 19.3° 1.5
NGC 7000 North America Nebula 79 unknown 21:10–02:05 (good) 87.2° at 22:40 72.7° 1.5
V1057 Cyg 79 unknown 21:10–02:05 (good) 87.3° at 22:40 72.7° 1.5
M33 Triangulum Pinwheel 41 unknown 21:30–05:30 (marginal) 79.1° at 03:15 18.3° 1.5
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2030-09-15"

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"}.