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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, 16 September 2038 · astronomical night 21:03 → 05:28 (8.43 h) · Moon 89% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 20:00–20:30: quality 0.1M31 20:30–20:35: quality 0.3M31 20:35–21:05: quality 0.4M31 21:05–21:20: quality 0.8M31 21:20–21:55: quality 0.6M31 21:55–01:10: quality 0.5M31 01:10–05:30: quality 0.4M31 05:30–06:05: quality 0.2M31 06:05–06:40: quality 0.1observe M31 23:30–01:00M42M42 03:30–03:45: quality 0.2M42 03:45–04:20: quality 0.3M42 04:20–05:30: quality 0.4M42 05:30–06:05: quality 0.2M42 06:05–06:40: quality 0.1observe M42 04:00–05:30M45M45 23:50–00:10: quality 0.2M45 00:10–04:35: quality 0.3M45 04:35–05:30: quality 0.4M45 05:30–06:05: quality 0.2M45 06:05–06:40: quality 0.1observe M45 02:30–04:00NGC 7000NGC 7000 20:00–20:30: quality 0.2NGC 7000 20:30–21:05: quality 0.5NGC 7000 21:05–21:20: quality 1.0NGC 7000 21:20–22:10: quality 0.8NGC 7000 22:10–01:00: quality 0.7NGC 7000 01:00–02:55: 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 20:30–22:00V1057 CygV1057 Cyg 20:00–20:30: quality 0.2V1057 Cyg 20:30–21:05: quality 0.5V1057 Cyg 21:05–21:20: quality 1.0V1057 Cyg 21:20–22:10: quality 0.8V1057 Cyg 22:10–01:00: quality 0.7V1057 Cyg 01:00–02:55: 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 22:00–23:30M33M33 21:15–21:20: quality 0.4M33 21:20–21:40: quality 0.3M33 21:40–22:10: quality 0.4M33 22:10–23:10: quality 0.5M33 23:10–03:10: quality 0.4M33 03:10–04:35: quality 0.3M33 04:35–05:30: quality 0.4M33 05:30–06:05: quality 0.2M33 06:05–06:40: quality 0.1observe M33 01:00–02:30scheduleNGC 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
19:25–20:30 — nothing worth pointing at — 1.08
20:30–22:00 NGC 7000 1.5 0.7
22:00–23:30 V1057 Cyg 1.5 0.73
23:30–01:00 M31 1.5 0.49
01:00–02:30 M33 1.5 0.39
02:30–04:00 M45 1.5 0.34
04:00–05:30 M42 1.5 0.38
05:30–07:05 — nothing worth pointing at — 1.58

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 83 unknown 21:05–21:20 (good) 89.6° at 02:20 38.1° 1.5
M42 Great Orion Nebula 9 unknown 04:00–05:30 (marginal) 42.9° at 07:15 53.9° 1.5
M45 Seven Sisters 19 unknown 00:30–05:30 (marginal) 72.5° at 05:25 28.9° 1.5
NGC 7000 North America Nebula 100 unknown 21:05–02:00 (good) 87.2° at 22:40 75.0° 1.5
V1057 Cyg 100 unknown 21:05–02:00 (good) 87.3° at 22:40 75.0° 1.5
M33 Triangulum Pinwheel 39 unknown 21:30–05:30 (marginal) 79.2° at 03:15 23.9° 1.5

💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2038-09-16"

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"}.