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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, 29 August 2031 · astronomical night 21:39 → 05:05 (7.43 h) · Moon 91% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 21:05–21:40: quality 0.2M31 21:40–21:55: quality 0.5M31 21:55–23:45: quality 0.6M31 23:45–02:10: quality 0.7M31 02:10–04:10: quality 0.8M31 04:10–05:10: quality 1.0M31 05:10–05:45: quality 0.5M31 05:45–06:15: quality 0.2M31 06:15–06:20: quality 0.1observe M31 22:35–00:05M42M42 04:40–04:45: quality 0.4M42 04:45–05:05: quality 0.5M42 05:05–05:10: quality 0.6M42 05:10–05:25: quality 0.3M42 05:25–05:45: quality 0.4M42 05:45–06:20: quality 0.1observe M42 05:00–05:45M45M45 01:05–01:20: quality 0.4M45 01:20–01:35: quality 0.5M45 01:35–01:50: quality 0.6M45 01:50–02:30: quality 0.7M45 02:30–03:45: quality 0.8M45 03:45–04:10: quality 0.9M45 04:10–05:10: quality 1.0M45 05:10–05:45: quality 0.5M45 05:45–06:20: quality 0.2observe M45 03:00–04:30NGC 7000NGC 7000 20:30–21:05: quality 0.1NGC 7000 21:05–21:40: quality 0.3NGC 7000 21:40–02:10: quality 0.6NGC 7000 02:10–04:10: quality 0.7NGC 7000 04:10–04:50: quality 0.9NGC 7000 04:50–05:10: quality 0.8NGC 7000 05:10–05:45: quality 0.4NGC 7000 05:45–06:20: quality 0.1observe NGC 7000 21:05–22:35V1057 CygV1057 Cyg 20:30–21:05: quality 0.1V1057 Cyg 21:05–21:40: quality 0.3V1057 Cyg 21:40–02:10: quality 0.6V1057 Cyg 02:10–04:10: quality 0.7V1057 Cyg 04:10–04:50: quality 0.9V1057 Cyg 04:50–05:10: quality 0.8V1057 Cyg 05:10–05:45: quality 0.4V1057 Cyg 05:45–06:20: quality 0.1observe V1057 Cyg 01:35–03:00observe V1057 Cyg 04:30–05:00M33M33 22:30–22:40: quality 0.3M33 22:40–23:00: quality 0.4M33 23:00–23:20: quality 0.5M33 23:20–00:25: quality 0.6M33 00:25–01:50: quality 0.7M33 01:50–04:10: quality 0.8M33 04:10–05:10: quality 1.0M33 05:10–05:45: quality 0.5M33 05:45–06:20: quality 0.2observe M33 00:05–01:35scheduleNGC 7000M31M33V1057 CygM45M4220:0022:0000:0002:0004:0006:00

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
19:55–21:05 — nothing worth pointing at — 1.17
21:05–22:35 NGC 7000 1.5 0.48
22:35–00:05 M31 1.5 0.63
00:05–01:35 M33 1.5 0.68
01:35–03:00 V1057 Cyg 1.42 0.65
03:00–04:30 M45 1.5 0.87
04:30–05:00 V1057 Cyg 0.5 0.85
05:00–05:45 M42 0.75 0.4
05:45–06:45 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 22:45–05:10 (good) 89.6° at 03:35 83.8° 1.5
M42 Great Orion Nebula 8 unknown 04:40–05:45 (marginal) 42.9° at 08:25 135.8° 0.75
M45 Seven Sisters 90 unknown 01:40–05:10 (good) 72.5° at 06:35 117.0° 1.5
NGC 7000 North America Nebula 89 unknown 00:10–05:10 (good) 87.2° at 23:50 60.3° 1.5
V1057 Cyg 89 unknown 00:15–05:10 (good) 87.3° at 23:50 60.2° 1.92
M33 Triangulum Pinwheel 100 unknown 23:35–05:10 (good) 79.1° at 04:25 89.4° 1.5
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2031-08-29"

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"}.