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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 Friday, 01 September 2028 · astronomical night 21:31 → 05:10 (7.64 h) · Moon 96% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 21:00–21:35: quality 0.2M31 21:35–22:45: quality 0.5M31 22:45–01:55: quality 0.6M31 01:55–04:55: quality 0.7M31 04:55–05:10: quality 0.8M31 05:10–05:15: quality 1.0M31 05:15–05:50: quality 0.5M31 05:50–06:05: quality 0.2M31 06:05–06:20: quality 0.1observe M31 00:15–01:40M42M42 04:25–04:40: quality 0.4M42 04:40–04:55: quality 0.5M42 04:55–05:10: quality 0.6M42 05:10–05:15: quality 0.7M42 05:15–05:50: quality 0.4M42 05:50–06:20: quality 0.1observe M42 04:30–05:50M45M45 00:50–00:55: quality 0.3M45 00:55–01:10: quality 0.4M45 01:10–01:30: quality 0.5M45 01:30–01:55: quality 0.6M45 01:55–03:15: quality 0.7M45 03:15–04:40: quality 0.8M45 04:40–05:10: quality 0.9M45 05:10–05:15: quality 1.0M45 05:15–05:50: quality 0.5M45 05:50–06:20: quality 0.2observe M45 03:05–04:30NGC 7000NGC 7000 20:25–21:00: quality 0.1NGC 7000 21:00–21:35: quality 0.3NGC 7000 21:35–05:10: quality 0.6NGC 7000 05:10–05:15: quality 0.8NGC 7000 05:15–05:40: quality 0.4NGC 7000 05:40–05:50: quality 0.3NGC 7000 05:50–06:20: quality 0.1observe NGC 7000 21:00–21:10observe NGC 7000 21:35–22:50V1057 CygV1057 Cyg 20:25–21:00: quality 0.1V1057 Cyg 21:00–21:35: quality 0.3V1057 Cyg 21:35–05:10: quality 0.6V1057 Cyg 05:10–05:15: quality 0.8V1057 Cyg 05:15–05:40: quality 0.4V1057 Cyg 05:40–05:50: quality 0.3V1057 Cyg 05:50–06:20: quality 0.1observe V1057 Cyg 22:50–00:15M33M33 22:15–22:35: quality 0.3M33 22:35–22:55: quality 0.4M33 22:55–23:55: quality 0.5M33 23:55–01:40: quality 0.6M33 01:40–04:35: quality 0.7M33 04:35–05:10: quality 0.8M33 05:10–05:15: quality 1.0M33 05:15–05:50: quality 0.5M33 05:50–06:20: quality 0.2observe M33 01:40–03:05scheduleNGC 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
19:50–21:00 — nothing worth pointing at — 1.17
21:00–21:10 NGC 7000 0.17 0.3
21:10–21:35 — nothing worth pointing at — 0.42
21:35–22:50 NGC 7000 1.25 0.57
22:50–00:15 V1057 Cyg 1.42 0.55
00:15–01:40 M31 1.42 0.63
01:40–03:05 M33 1.42 0.68
03:05–04:30 M45 1.42 0.79
04:30–05:50 M42 1.33 0.47
05:50–06:50 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 00:05–05:15 (good) 89.6° at 03:20 72.5° 1.42
M42 Great Orion Nebula 13 unknown 05:05–05:15 (good) 42.9° at 08:10 121.8° 1.33
M45 Seven Sisters 88 unknown 01:35–05:15 (good) 72.5° at 06:20 102.1° 1.42
NGC 7000 North America Nebula 81 unknown 05:10–05:15 (good) 87.3° at 23:35 58.0° 1.42
V1057 Cyg 81 unknown 05:10–05:15 (good) 87.3° at 23:35 57.9° 1.42
M33 Triangulum Pinwheel 100 unknown 00:50–05:15 (good) 79.1° at 04:10 75.8° 1.42

💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2028-09-01"

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"}.