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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 Monday, 25 August 2042 · astronomical night 21:46 → 04:59 (7.22 h) · Moon 70% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 21:10–21:35: quality 0.2M31 21:35–21:50: quality 0.3M31 21:50–22:00: quality 0.6M31 22:00–22:25: quality 0.7M31 22:25–23:55: quality 0.8M31 23:55–00:45: quality 0.9M31 00:45–05:00: quality 1.0M31 05:00–05:40: quality 0.5M31 05:40–06:15: quality 0.2observe M31 00:00–01:25observe M31 05:00–05:30M42M42 04:55–05:00: quality 0.4M42 05:00–05:10: quality 0.2M42 05:10–05:40: quality 0.3M42 05:40–06:15: quality 0.1observe M42 04:55–05:00observe M42 05:30–05:40M45M45 01:20–01:25: quality 0.4M45 01:25–01:40: quality 0.5M45 01:40–01:55: quality 0.6M45 01:55–02:05: quality 0.7M45 02:05–02:55: quality 0.8M45 02:55–04:15: quality 0.9M45 04:15–05:00: quality 1.0M45 05:00–05:40: quality 0.5M45 05:40–06:15: quality 0.2observe M45 02:50–04:55NGC 7000NGC 7000 20:35–21:10: quality 0.1NGC 7000 21:10–21:50: quality 0.4NGC 7000 21:50–00:25: quality 0.8NGC 7000 00:25–00:45: quality 0.9NGC 7000 00:45–03:35: quality 1.0NGC 7000 03:35–05:00: quality 0.9NGC 7000 05:00–05:40: quality 0.4NGC 7000 05:40–06:15: quality 0.1observe NGC 7000 21:10–22:35V1057 CygV1057 Cyg 20:35–21:10: quality 0.1V1057 Cyg 21:10–21:50: quality 0.4V1057 Cyg 21:50–00:25: quality 0.8V1057 Cyg 00:25–00:45: quality 0.9V1057 Cyg 00:45–03:35: quality 1.0V1057 Cyg 03:35–05:00: quality 0.9V1057 Cyg 05:00–05:40: quality 0.4V1057 Cyg 05:40–06:15: quality 0.1observe V1057 Cyg 22:35–00:00M33M33 22:45–22:55: quality 0.4M33 22:55–23:10: quality 0.5M33 23:10–23:25: quality 0.6M33 23:25–23:40: quality 0.7M33 23:40–00:45: quality 0.8M33 00:45–01:40: quality 0.9M33 01:40–05:00: quality 1.0M33 05:00–05:40: quality 0.5M33 05:40–06:15: quality 0.2observe M33 01:25–02:50scheduleNGC 7000V1057 CygM31M33M4522:0000:0002:0004:0006:00

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
20:05–21:10 — nothing worth pointing at — 1.08
21:10–22:35 NGC 7000 1.42 0.62
22:35–00:00 V1057 Cyg 1.42 0.83
00:00–01:25 M31 1.42 0.94
01:25–02:50 M33 1.42 0.98
02:50–04:55 M45 2.08 0.92
04:55–05:00 M42 0.08 0.42
05:00–05:30 M31 0.5 0.5
05:30–05:40 M42 0.17 0.33
05:40–06:45 — nothing worth pointing at — 1.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 21:50–05:00 (good) 89.7° at 03:50 118.9° 1.92
M42 Great Orion Nebula 3 unknown 05:25–05:40 (marginal) 42.9° at 08:40 146.4° 0.25
M45 Seven Sisters 87 unknown 01:45–05:00 (good) 72.5° at 06:50 153.7° 2.08
NGC 7000 North America Nebula 100 unknown 21:50–05:00 (good) 87.2° at 00:05 85.2° 1.42
V1057 Cyg 100 unknown 21:50–05:00 (good) 87.3° at 00:05 85.2° 1.42
M33 Triangulum Pinwheel 100 unknown 23:20–05:00 (good) 79.2° at 04:40 126.5° 1.42
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2042-08-25"

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"}.