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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, 31 August 2029 · astronomical night 21:34 → 05:08 (7.57 h) · Moon 52% (last quarter) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 20:45–21:00: quality 0.1M31 21:00–21:05: quality 0.2M31 21:05–21:35: quality 0.3M31 21:35–21:45: quality 0.7M31 21:45–22:35: quality 0.8M31 22:35–23:30: quality 0.9M31 23:30–23:35: quality 0.7M31 23:35–01:50: quality 0.8M31 01:50–05:10: quality 0.7M31 05:10–05:45: quality 0.3M31 05:45–06:20: quality 0.1observe M31 00:00–01:30observe M31 05:10–05:45M42M42 04:30–04:55: quality 0.3M42 04:55–05:10: quality 0.4M42 05:10–05:45: quality 0.2M42 05:45–06:20: quality 0.1observe M42 05:00–05:10M45M45 00:55–01:05: quality 0.3M45 01:05–01:25: quality 0.4M45 01:25–01:45: quality 0.5M45 01:45–05:10: quality 0.6M45 05:10–05:45: quality 0.3M45 05:45–06:20: quality 0.1observe M45 03:00–04:30NGC 7000NGC 7000 20:25–20:55: quality 0.1NGC 7000 20:55–21:00: quality 0.2NGC 7000 21:00–21:35: quality 0.5NGC 7000 21:35–23:30: quality 1.0NGC 7000 23:30–01:55: quality 0.9NGC 7000 01:55–03:40: quality 0.8NGC 7000 03:40–05:10: quality 0.7NGC 7000 05:10–05:45: quality 0.3NGC 7000 05:45–06:20: quality 0.1observe NGC 7000 21:00–22:30observe NGC 7000 04:30–05:00V1057 CygV1057 Cyg 20:25–20:55: quality 0.1V1057 Cyg 20:55–21:00: quality 0.2V1057 Cyg 21:00–21:35: quality 0.5V1057 Cyg 21:35–23:30: quality 1.0V1057 Cyg 23:30–01:55: quality 0.9V1057 Cyg 01:55–03:40: quality 0.8V1057 Cyg 03:40–05:10: quality 0.7V1057 Cyg 05:10–05:45: quality 0.3V1057 Cyg 05:45–06:20: quality 0.1observe V1057 Cyg 22:30–00:00M33M33 22:20–22:25: quality 0.4M33 22:25–22:40: quality 0.5M33 22:40–22:55: quality 0.6M33 22:55–23:10: quality 0.7M33 23:10–23:30: quality 0.8M33 23:30–04:15: quality 0.7M33 04:15–05:10: quality 0.6M33 05:10–05:45: quality 0.3M33 05:45–06:20: quality 0.1observe M33 01:30–03:00scheduleNGC 7000V1057 CygM31M33M4520:0022:0000:0002:0004:0006:00

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
19:55–21:00 — nothing worth pointing at — 1.08
21:00–22:30 NGC 7000 1.5 0.81
22:30–00:00 V1057 Cyg 1.5 0.96
00:00–01:30 M31 1.5 0.77
01:30–03:00 M33 1.5 0.7
03:00–04:30 M45 1.5 0.61
04:30–05:00 NGC 7000 0.5 0.68
05:00–05:10 M42 0.17 0.39
05:10–05:45 M31 0.58 0.33
05:45–06:50 — nothing worth pointing at — 1.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 91 unknown 21:35–05:10 (good) 89.6° at 03:25 47.3° 2.08
M42 Great Orion Nebula 4 unknown 04:40–05:10 (marginal) 42.9° at 08:15 35.0° 0.17
M45 Seven Sisters 41 unknown 03:25–05:10 (good) 72.5° at 06:25 6.4° 1.5
NGC 7000 North America Nebula 100 unknown 21:35–05:10 (good) 87.2° at 23:40 86.2° 2.0
V1057 Cyg 100 unknown 21:35–05:10 (good) 87.3° at 23:40 86.2° 1.5
M33 Triangulum Pinwheel 81 unknown 22:45–05:10 (good) 79.1° at 04:15 36.3° 1.5
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2029-08-31"

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"}.