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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, 15 September 2033 · astronomical night 21:04 → 05:27 (8.39 h) · Moon 48% (last quarter) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 20:00–20:35: quality 0.1M31 20:35–21:05: quality 0.4M31 21:05–21:40: quality 0.8M31 21:40–23:05: quality 0.9M31 23:05–00:20: quality 1.0M31 00:20–01:15: quality 0.9M31 01:15–05:25: quality 0.8M31 05:25–05:30: quality 0.7M31 05:30–06:05: quality 0.4M31 06:05–06:35: quality 0.1observe M31 23:55–01:35observe M31 05:30–06:05M42M42 03:30–03:45: quality 0.3M42 03:45–04:10: quality 0.4M42 04:10–05:20: quality 0.5M42 05:20–05:30: quality 0.6M42 05:30–06:05: quality 0.3M42 06:05–06:35: quality 0.1observe M42 04:55–05:30M45M45 23:55–00:00: quality 0.4M45 00:00–00:15: quality 0.5M45 00:15–00:20: quality 0.6M45 00:20–00:35: quality 0.5M45 00:35–01:20: quality 0.6M45 01:20–05:30: quality 0.7M45 05:30–06:05: quality 0.3M45 06:05–06:35: quality 0.1observe M45 03:15–04:55NGC 7000NGC 7000 20:00–20:35: quality 0.2NGC 7000 20:35–21:05: quality 0.5NGC 7000 21:05–00:20: quality 1.0NGC 7000 00:20–02:25: quality 0.9NGC 7000 02:25–03:50: quality 0.8NGC 7000 03:50–04:40: quality 0.7NGC 7000 04:40–04:55: quality 0.6NGC 7000 04:55–05:15: quality 0.5NGC 7000 05:15–05:30: quality 0.4NGC 7000 05:30–05:35: quality 0.2observe NGC 7000 20:35–22:15V1057 CygV1057 Cyg 20:00–20:35: quality 0.2V1057 Cyg 20:35–21:05: quality 0.5V1057 Cyg 21:05–00:20: quality 1.0V1057 Cyg 00:20–02:25: quality 0.9V1057 Cyg 02:25–03:50: quality 0.8V1057 Cyg 03:50–04:40: quality 0.7V1057 Cyg 04:40–04:55: quality 0.6V1057 Cyg 04:55–05:15: quality 0.5V1057 Cyg 05:15–05:30: quality 0.4V1057 Cyg 05:30–05:35: quality 0.2observe V1057 Cyg 22:15–23:55M33M33 21:20–21:25: quality 0.4M33 21:25–21:40: quality 0.5M33 21:40–21:55: quality 0.6M33 21:55–22:10: quality 0.7M33 22:10–23:00: quality 0.8M33 23:00–00:20: quality 0.9M33 00:20–04:40: quality 0.8M33 04:40–05:30: quality 0.7M33 05:30–06:05: quality 0.4M33 06:05–06:35: quality 0.1observe M33 01:35–03:15scheduleNGC 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
19:30–20:35 — nothing worth pointing at — 1.08
20:35–22:15 NGC 7000 1.67 0.85
22:15–23:55 V1057 Cyg 1.67 1.0
23:55–01:35 M31 1.67 0.89
01:35–03:15 M33 1.67 0.8
03:15–04:55 M45 1.67 0.69
04:55–05:30 M42 0.58 0.55
05:30–06:05 M31 0.58 0.36
06:05–07:05 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 21:05–05:30 (good) 89.8° at 02:25 66.9° 2.25
M42 Great Orion Nebula 16 unknown 03:35–05:30 (marginal) 42.9° at 07:15 23.8° 0.58
M45 Seven Sisters 68 unknown 00:45–05:30 (good) 72.5° at 05:30 27.6° 1.67
NGC 7000 North America Nebula 100 unknown 21:05–04:45 (good) 87.2° at 22:40 103.0° 1.67
V1057 Cyg 100 unknown 21:05–04:45 (good) 87.3° at 22:40 103.1° 1.67
M33 Triangulum Pinwheel 95 unknown 21:50–05:30 (good) 79.1° at 03:15 57.2° 1.67
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2033-09-15"

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"}.