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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 Wednesday, 25 August 2027 · astronomical night 21:47 → 04:59 (7.2 h) · Moon 41% (waning crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 21:10–21:15: quality 0.1M31 21:15–21:30: quality 0.2M31 21:30–21:50: quality 0.3M31 21:50–21:55: quality 0.6M31 21:55–22:10: quality 0.7M31 22:10–23:05: quality 0.8M31 23:05–00:10: quality 0.9M31 00:10–05:00: quality 0.8M31 05:00–05:40: quality 0.4M31 05:40–06:15: quality 0.1observe M31 00:45–02:30M42M42 04:55–05:00: quality 0.3M42 05:00–05:40: quality 0.2M42 05:40–06:15: quality 0.1M45M45 01:20–01:25: quality 0.3M45 01:25–01:40: quality 0.4M45 01:40–02:00: quality 0.5M45 02:00–03:00: quality 0.6M45 03:00–05:00: quality 0.7M45 05:00–05:35: quality 0.4M45 05:35–05:40: quality 0.3M45 05:40–06:15: quality 0.1observe M45 04:15–05:40NGC 7000NGC 7000 20:40–21:15: quality 0.1NGC 7000 21:15–21:50: quality 0.5NGC 7000 21:50–00:10: quality 1.0NGC 7000 00:10–03:20: quality 0.9NGC 7000 03:20–04:45: quality 0.8NGC 7000 04:45–05:00: quality 0.7NGC 7000 05:00–05:35: quality 0.4NGC 7000 05:35–05:40: quality 0.3NGC 7000 05:40–06:15: quality 0.1observe NGC 7000 21:15–23:00V1057 CygV1057 Cyg 20:40–21:15: quality 0.1V1057 Cyg 21:15–21:50: quality 0.5V1057 Cyg 21:50–00:10: quality 1.0V1057 Cyg 00:10–03:20: quality 0.9V1057 Cyg 03:20–04:45: quality 0.8V1057 Cyg 04:45–05:00: quality 0.7V1057 Cyg 05:00–05:35: quality 0.4V1057 Cyg 05:35–05:40: quality 0.3V1057 Cyg 05:40–06:15: quality 0.1observe V1057 Cyg 23:00–00:45M33M33 22:45–22:50: quality 0.4M33 22:50–23:05: quality 0.5M33 23:05–23:20: quality 0.6M33 23:20–23:35: quality 0.7M33 23:35–00:10: quality 0.8M33 00:10–01:05: quality 0.7M33 01:05–04:30: quality 0.8M33 04:30–05:00: quality 0.7M33 05:00–05:40: quality 0.4M33 05:40–06:15: quality 0.1observe M33 02:30–04:15scheduleNGC 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
20:05–21:15 — nothing worth pointing at — 1.17
21:15–23:00 NGC 7000 1.75 0.83
23:00–00:45 V1057 Cyg 1.75 0.97
00:45–02:30 M31 1.75 0.83
02:30–04:15 M33 1.75 0.78
04:15–05:40 M45 1.42 0.54
05:40–06:45 — nothing worth pointing at — 1.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 92 unknown 21:50–05:00 (good) 89.7° at 03:50 51.0° 1.75
M42 Great Orion Nebula 2 unknown — 42.9° at 08:40 34.5° 0.0
M45 Seven Sisters 46 unknown 02:10–05:00 (good) 72.5° at 06:50 13.3° 1.42
NGC 7000 North America Nebula 100 unknown 21:50–05:00 (good) 87.3° at 00:05 88.1° 1.75
V1057 Cyg 100 unknown 21:50–05:00 (good) 87.3° at 00:05 88.2° 1.75
M33 Triangulum Pinwheel 83 unknown 23:15–05:00 (good) 79.1° at 04:40 41.5° 1.75

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-08-25"

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"}.