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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, 04 August 2031 · astronomical night 22:27 → 04:27 (6.0 h) · Moon 95% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 22:35–23:05: quality 0.3M31 23:05–23:35: quality 0.4M31 23:35–04:30: quality 0.5M31 04:30–05:10: quality 0.3M31 05:10–05:50: quality 0.1observe M31 00:40–02:05M42M45M45 02:40–03:00: quality 0.3M45 03:00–03:20: quality 0.4M45 03:20–04:10: quality 0.5M45 04:10–04:30: quality 0.6M45 04:30–05:10: quality 0.3M45 05:10–05:50: quality 0.1observe M45 03:30–04:30observe M45 05:00–05:10NGC 7000NGC 7000 21:10–21:50: quality 0.1NGC 7000 21:50–22:30: quality 0.3NGC 7000 22:30–00:10: quality 0.6NGC 7000 00:10–04:30: quality 0.5NGC 7000 04:30–05:10: quality 0.2NGC 7000 05:10–05:50: quality 0.1observe NGC 7000 21:50–23:15V1057 CygV1057 Cyg 21:10–21:50: quality 0.1V1057 Cyg 21:50–22:30: quality 0.3V1057 Cyg 22:30–00:10: quality 0.6V1057 Cyg 00:10–04:30: quality 0.5V1057 Cyg 04:30–05:10: quality 0.2V1057 Cyg 05:10–05:50: quality 0.1observe V1057 Cyg 23:15–00:40M33M33 00:05–00:15: quality 0.2M33 00:15–00:40: quality 0.3M33 00:40–02:15: quality 0.4M33 02:15–04:30: quality 0.5M33 04:30–05:10: quality 0.3M33 05:10–05:50: quality 0.1observe M33 02:05–03:30scheduleNGC 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
20:35–21:50 — nothing worth pointing at — 1.25
21:50–23:15 NGC 7000 1.42 0.47
23:15–00:40 V1057 Cyg 1.42 0.56
00:40–02:05 M31 1.42 0.47
02:05–03:30 M33 1.42 0.47
03:30–04:30 M45 1.0 0.54
04:30–05:00 — nothing worth pointing at — 0.5
05:00–05:10 M45 0.17 0.3
05:10–06:20 — nothing worth pointing at — 1.17

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 37 unknown 22:50–04:30 (marginal) 89.6° at 05:10 53.9° 1.42
M42 Great Orion Nebula 0 unknown — 42.9° at 10:05 105.1° 0.0
M45 Seven Sisters 16 unknown 02:50–04:30 (marginal) 72.5° at 08:15 81.0° 1.17
NGC 7000 North America Nebula 56 unknown 22:30–23:05 (good) 87.2° at 01:30 52.6° 1.42
V1057 Cyg 56 unknown 22:30–23:05 (good) 87.3° at 01:30 52.6° 1.42
M33 Triangulum Pinwheel 28 unknown 00:25–04:30 (marginal) 79.1° at 06:05 55.2° 1.42

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2031-08-04"

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"}.