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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 Saturday, 03 September 2044 · astronomical night 21:27 → 05:13 (7.76 h) · Moon 88% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 20:40–20:55: quality 0.1M31 20:55–21:15: quality 0.2M31 21:15–21:30: quality 0.3M31 21:30–22:25: quality 0.6M31 22:25–00:10: quality 0.7M31 00:10–03:20: quality 0.8M31 03:20–05:15: quality 1.0M31 05:15–05:50: quality 0.5M31 05:50–05:55: quality 0.2M31 05:55–06:25: quality 0.1observe M31 23:55–01:25M42M42 04:15–04:25: quality 0.4M42 04:25–04:40: quality 0.5M42 04:40–04:55: quality 0.6M42 04:55–05:15: quality 0.7M42 05:15–05:50: quality 0.4M42 05:50–06:25: quality 0.1observe M42 04:25–05:50M45M45 00:40–00:55: quality 0.4M45 00:55–01:10: quality 0.5M45 01:10–01:25: quality 0.6M45 01:25–01:55: quality 0.7M45 01:55–03:15: quality 0.8M45 03:15–03:35: quality 0.9M45 03:35–05:15: quality 1.0M45 05:15–05:50: quality 0.5M45 05:50–06:25: quality 0.2observe M45 02:55–04:25NGC 7000NGC 7000 20:20–20:55: quality 0.1NGC 7000 20:55–21:30: quality 0.3NGC 7000 21:30–03:20: quality 0.7NGC 7000 03:20–04:25: quality 0.9NGC 7000 04:25–05:15: quality 0.8NGC 7000 05:15–05:30: quality 0.4NGC 7000 05:30–05:50: quality 0.3NGC 7000 05:50–06:20: quality 0.1observe NGC 7000 20:55–22:25V1057 CygV1057 Cyg 20:20–20:55: quality 0.1V1057 Cyg 20:55–21:30: quality 0.3V1057 Cyg 21:30–03:20: quality 0.7V1057 Cyg 03:20–04:25: quality 0.9V1057 Cyg 04:25–05:15: quality 0.8V1057 Cyg 05:15–05:30: quality 0.4V1057 Cyg 05:30–05:50: quality 0.3V1057 Cyg 05:50–06:20: quality 0.1observe V1057 Cyg 22:25–23:55M33M33 22:05–22:15: quality 0.3M33 22:15–22:30: quality 0.4M33 22:30–22:50: quality 0.5M33 22:50–23:30: quality 0.6M33 23:30–01:00: quality 0.7M33 01:00–03:20: quality 0.8M33 03:20–05:15: quality 1.0M33 05:15–05:50: quality 0.5M33 05:50–06:25: quality 0.2observe M33 01:25–02:55scheduleNGC 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
19:50–20:55 — nothing worth pointing at — 1.08
20:55–22:25 NGC 7000 1.5 0.55
22:25–23:55 V1057 Cyg 1.5 0.67
23:55–01:25 M31 1.5 0.77
01:25–02:55 M33 1.5 0.82
02:55–04:25 M45 1.5 0.93
04:25–05:50 M42 1.42 0.52
05:50–06:55 — nothing worth pointing at — 1.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 21:35–05:15 (good) 89.7° at 03:10 88.5° 1.5
M42 Great Orion Nebula 16 unknown 04:50–05:15 (good) 42.9° at 08:05 130.9° 1.42
M45 Seven Sisters 100 unknown 01:15–05:15 (good) 72.6° at 06:15 118.1° 1.5
NGC 7000 North America Nebula 92 unknown 21:30–05:15 (good) 87.2° at 23:25 68.0° 1.5
V1057 Cyg 92 unknown 21:30–05:15 (good) 87.2° at 23:25 67.9° 1.5
M33 Triangulum Pinwheel 100 unknown 23:00–05:15 (good) 79.2° at 04:00 92.5° 1.5
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2044-09-03"

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"}.