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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, 04 April 2031 · astronomical night 21:25 → 05:21 (7.93 h) · Moon 91% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M42M42 20:20–20:55: quality 0.1M42 20:55–21:30: quality 0.2M42 21:30–21:35: quality 0.4M42 21:35–21:55: quality 0.3M45M45 20:20–20:55: quality 0.1M45 20:55–21:25: quality 0.3M45 21:25–21:30: quality 0.2M45 21:30–21:50: quality 0.4M45 21:50–21:55: quality 0.3observe M45 20:55–21:05observe M45 21:30–21:55NGC 7000NGC 7000 02:35–02:55: quality 0.4NGC 7000 02:55–03:15: quality 0.5NGC 7000 03:15–03:35: quality 0.6NGC 7000 03:35–04:10: quality 0.7NGC 7000 04:10–05:20: quality 0.8NGC 7000 05:20–05:25: quality 0.9NGC 7000 05:25–06:00: quality 0.5NGC 7000 06:00–06:30: quality 0.1observe NGC 7000 02:35–03:40V1057 CygV1057 Cyg 02:40–02:55: quality 0.4V1057 Cyg 02:55–03:15: quality 0.5V1057 Cyg 03:15–03:35: quality 0.6V1057 Cyg 03:35–04:10: quality 0.7V1057 Cyg 04:10–05:20: quality 0.8V1057 Cyg 05:20–05:25: quality 0.9V1057 Cyg 05:25–06:00: quality 0.5V1057 Cyg 06:00–06:30: quality 0.1observe V1057 Cyg 03:40–06:00M33scheduleNGC 7000V1057 Cyg20:0022:0000:0002:0004:0006:00

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
19:45–20:55 — nothing worth pointing at — 1.17
20:55–21:05 M45 0.17 0.31
21:05–21:30 — nothing worth pointing at — 0.42
21:30–21:55 M45 0.42 0.39
21:55–02:35 — nothing worth pointing at — 4.67
02:35–03:40 NGC 7000 1.08 0.51
03:40–06:00 V1057 Cyg 2.33 0.7
06:00–07:00 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 0 unknown — 89.7° at 13:15 127.6° 0.0
M42 Great Orion Nebula 3 unknown 21:30–21:45 (marginal) 42.9° at 18:05 76.5° 0.0
M45 Seven Sisters 4 unknown 21:30–21:55 (marginal) 72.5° at 16:20 100.9° 0.58
NGC 7000 North America Nebula 51 unknown 03:25–05:25 (good) 87.2° at 09:25 127.5° 1.08
V1057 Cyg 51 unknown 03:25–05:25 (good) 87.3° at 09:30 127.6° 2.33
M33 Triangulum Pinwheel 0 unknown — 79.1° at 14:05 126.6° 0.0

Left out

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

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"}.