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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 Monday, 10 September 2029 · astronomical night 21:14 → 05:21 (8.12 h) · Moon 9% (waxing crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 20:10–20:45: quality 0.1M31 20:45–20:55: quality 0.3M31 20:55–21:15: quality 0.4M31 21:15–22:00: quality 0.8M31 22:00–23:25: quality 0.9M31 23:25–05:25: quality 1.0M31 05:25–06:00: quality 0.5M31 06:00–06:30: quality 0.1observe M31 23:55–01:30M42M42 03:50–04:00: quality 0.4M42 04:00–04:15: quality 0.5M42 04:15–04:30: quality 0.6M42 04:30–04:45: quality 0.7M42 04:45–05:25: quality 0.8M42 05:25–06:00: quality 0.4M42 06:00–06:30: quality 0.1observe M42 04:40–06:00M45M45 00:15–00:20: quality 0.4M45 00:20–00:35: quality 0.5M45 00:35–00:50: quality 0.6M45 00:50–01:00: quality 0.7M45 01:00–01:50: quality 0.8M45 01:50–03:10: quality 0.9M45 03:10–05:25: quality 1.0M45 05:25–06:00: quality 0.5M45 06:00–06:30: quality 0.2observe M45 03:05–04:40NGC 7000NGC 7000 20:10–20:20: quality 0.1NGC 7000 20:20–20:45: quality 0.2NGC 7000 20:45–21:15: quality 0.5NGC 7000 21:15–02:30: quality 1.0NGC 7000 02:30–04:00: quality 0.9NGC 7000 04:00–04:55: quality 0.8NGC 7000 04:55–05:10: quality 0.7NGC 7000 05:10–05:25: quality 0.6NGC 7000 05:25–05:40: quality 0.3NGC 7000 05:40–05:55: quality 0.2observe NGC 7000 20:45–22:20V1057 CygV1057 Cyg 20:10–20:20: quality 0.1V1057 Cyg 20:20–20:45: quality 0.2V1057 Cyg 20:45–21:15: quality 0.5V1057 Cyg 21:15–02:30: quality 1.0V1057 Cyg 02:30–04:00: quality 0.9V1057 Cyg 04:00–04:55: quality 0.8V1057 Cyg 04:55–05:10: quality 0.7V1057 Cyg 05:10–05:25: quality 0.6V1057 Cyg 05:25–05:35: quality 0.3V1057 Cyg 05:35–05:55: quality 0.2observe V1057 Cyg 22:20–23:55M33M33 21:40–21:45: quality 0.4M33 21:45–22:00: quality 0.5M33 22:00–22:15: quality 0.6M33 22:15–22:30: quality 0.7M33 22:30–23:15: quality 0.8M33 23:15–00:40: quality 0.9M33 00:40–05:25: quality 1.0M33 05:25–06:00: quality 0.5M33 06:00–06:30: quality 0.1observe M33 01:30–03:05scheduleNGC 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
19:35–20:45 — nothing worth pointing at — 1.17
20:45–22:20 NGC 7000 1.58 0.84
22:20–23:55 V1057 Cyg 1.58 1.0
23:55–01:30 M31 1.58 1.0
01:30–03:05 M33 1.58 1.0
03:05–04:40 M45 1.58 0.99
04:40–06:00 M42 1.33 0.63
06:00–07:00 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 21:15–05:25 (good) 89.7° at 02:45 151.0° 1.58
M42 Great Orion Nebula 28 unknown 04:20–05:25 (good) 42.9° at 07:35 113.6° 1.33
M45 Seven Sisters 100 unknown 00:40–05:25 (good) 72.5° at 05:50 143.4° 1.58
NGC 7000 North America Nebula 100 unknown 21:15–05:20 (good) 87.2° at 23:00 117.1° 1.58
V1057 Cyg 100 unknown 21:15–05:20 (good) 87.3° at 23:00 117.2° 1.58
M33 Triangulum Pinwheel 100 unknown 22:10–05:25 (good) 79.1° at 03:35 162.3° 1.58
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2029-09-10"

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"}.