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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, 21 September 2029 · astronomical night 20:53 → 05:35 (8.7 h) · Moon 99% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:55–20:25: quality 0.1M31 20:25–20:55: quality 0.2M31 20:55–03:10: quality 0.4M31 03:10–05:40: quality 0.5M31 05:40–06:10: quality 0.3M31 06:10–06:45: quality 0.1observe M31 00:05–01:40M42M42 03:05–03:20: quality 0.3M42 03:20–03:40: quality 0.4M42 03:40–04:00: quality 0.5M42 04:00–05:00: quality 0.6M42 05:00–05:40: quality 0.7M42 05:40–05:55: quality 0.3M42 05:55–06:10: quality 0.4M42 06:10–06:45: quality 0.1observe M42 04:50–06:10M45M45 23:30–23:40: quality 0.2M45 23:40–00:05: quality 0.3M45 00:05–00:45: quality 0.4M45 00:45–02:40: quality 0.5M45 02:40–04:55: quality 0.6M45 04:55–05:40: quality 0.7M45 05:40–06:00: quality 0.3M45 06:00–06:10: quality 0.4M45 06:10–06:45: quality 0.1observe M45 01:40–03:15NGC 7000NGC 7000 19:50–20:25: quality 0.1NGC 7000 20:25–20:55: quality 0.3NGC 7000 20:55–00:25: quality 0.5NGC 7000 00:25–00:55: quality 0.4NGC 7000 00:55–01:05: quality 0.5NGC 7000 01:05–04:30: quality 0.4NGC 7000 04:30–05:10: quality 0.3observe NGC 7000 20:55–22:30V1057 CygV1057 Cyg 19:50–20:25: quality 0.1V1057 Cyg 20:25–20:55: quality 0.3V1057 Cyg 20:55–00:25: quality 0.5V1057 Cyg 00:25–00:55: quality 0.4V1057 Cyg 00:55–01:05: quality 0.5V1057 Cyg 01:05–04:30: quality 0.4V1057 Cyg 04:30–05:05: quality 0.3V1057 Cyg 05:05–05:10: quality 0.2observe V1057 Cyg 22:30–00:05M33M33 20:55–21:10: quality 0.2M33 21:10–21:50: quality 0.3M33 21:50–03:20: quality 0.4M33 03:20–05:15: quality 0.5M33 05:15–05:40: quality 0.6M33 05:40–06:10: quality 0.3M33 06:10–06:45: quality 0.1observe M33 03:15–04:50scheduleNGC 7000V1057 CygM31M45M33M4220:0022:0000:0002:0004:0006:00

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
19:15–20:55 — nothing worth pointing at — 1.67
20:55–22:30 NGC 7000 1.58 0.52
22:30–00:05 V1057 Cyg 1.58 0.47
00:05–01:40 M31 1.58 0.4
01:40–03:15 M45 1.58 0.54
03:15–04:50 M33 1.58 0.49
04:50–06:10 M42 1.33 0.55
06:10–07:10 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 54 unknown 20:55–05:40 (marginal) 89.7° at 02:00 44.7° 1.58
M42 Great Orion Nebula 29 unknown 04:10–05:40 (good) 42.9° at 06:55 94.4° 1.33
M45 Seven Sisters 60 unknown 03:40–05:40 (good) 72.5° at 05:05 68.8° 1.58
NGC 7000 North America Nebula 53 unknown 20:55–04:50 (marginal) 87.2° at 22:15 53.3° 1.58
V1057 Cyg 53 unknown 20:55–04:50 (marginal) 87.3° at 22:15 53.3° 1.58
M33 Triangulum Pinwheel 53 unknown 21:30–05:40 (marginal) 79.1° at 02:50 43.9° 1.58
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2029-09-21"

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"}.