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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, 14 September 2028 · astronomical night 21:06 → 05:26 (8.35 h) · Moon 20% (waning crescent) · 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 21:10–21:40: quality 0.8M31 21:40–23:05: quality 0.9M31 23:05–04:50: quality 1.0M31 04:50–05:30: quality 0.9M31 05:30–05:50: quality 0.5M31 05:50–06:05: quality 0.4M31 06:05–06:35: quality 0.1observe M31 23:55–01:35M42M42 03:35–03:50: quality 0.4M42 03:50–04:05: quality 0.5M42 04:05–04:25: quality 0.6M42 04:25–05:20: quality 0.7M42 05:20–05:30: quality 0.8M42 05:30–06:05: quality 0.4M42 06:05–06:35: quality 0.1observe M42 04:55–06:05M45M45 00:00–00:05: quality 0.4M45 00:05–00:20: quality 0.5M45 00:20–00:30: quality 0.6M45 00:30–00:45: quality 0.7M45 00:45–01:30: quality 0.8M45 01:30–05:30: quality 0.9M45 05:30–06:05: quality 0.5M45 06:05–06:35: quality 0.1observe M45 03:15–04:55NGC 7000NGC 7000 20:00–20:35: quality 0.2NGC 7000 20:35–21:10: quality 0.5NGC 7000 21:10–02:15: quality 1.0NGC 7000 02:15–03:25: quality 0.9NGC 7000 03:25–04:35: quality 0.8NGC 7000 04:35–04:50: quality 0.7NGC 7000 04:50–05:10: quality 0.6NGC 7000 05:10–05:25: quality 0.5NGC 7000 05:25–05:30: quality 0.4NGC 7000 05:30–05:40: quality 0.2observe NGC 7000 20:35–22:15V1057 CygV1057 Cyg 20:00–20:35: quality 0.2V1057 Cyg 20:35–21:10: quality 0.5V1057 Cyg 21:10–02:15: quality 1.0V1057 Cyg 02:15–03:25: quality 0.9V1057 Cyg 03:25–04:35: quality 0.8V1057 Cyg 04:35–04:50: quality 0.7V1057 Cyg 04:50–05:10: quality 0.6V1057 Cyg 05:10–05:25: quality 0.5V1057 Cyg 05:25–05:30: quality 0.4V1057 Cyg 05:30–05:40: quality 0.2observe V1057 Cyg 22:15–23:55M33M33 21:25–21:30: quality 0.4M33 21:30–21:45: quality 0.5M33 21:45–22:00: quality 0.6M33 22:00–22:10: quality 0.7M33 22:10–23:00: quality 0.8M33 23:00–00:20: quality 0.9M33 00:20–04:05: quality 1.0M33 04:05–05:30: quality 0.9M33 05:30–06:05: quality 0.5M33 06:05–06:35: quality 0.1observe M33 01:35–03:15scheduleNGC 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
20:35–22:15 NGC 7000 1.67 0.82
22:15–23:55 V1057 Cyg 1.67 1.0
23:55–01:35 M31 1.67 1.0
01:35–03:15 M33 1.67 0.99
03:15–04:55 M45 1.67 0.92
04:55–06:05 M42 1.17 0.56
06:05–07:05 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 21:10–05:30 (good) 89.5° at 02:30 91.4° 1.67
M42 Great Orion Nebula 28 unknown 04:15–05:30 (good) 42.9° at 07:20 44.4° 1.17
M45 Seven Sisters 94 unknown 00:25–05:30 (good) 72.5° at 05:30 59.5° 1.67
NGC 7000 North America Nebula 100 unknown 21:10–05:00 (good) 87.2° at 22:45 114.8° 1.67
V1057 Cyg 100 unknown 21:10–05:00 (good) 87.3° at 22:45 114.9° 1.67
M33 Triangulum Pinwheel 100 unknown 21:50–05:30 (good) 79.1° at 03:20 86.3° 1.67
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2028-09-14"

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"}.