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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, 01 April 2039 · astronomical night 21:21 → 05:27 (8.09 h) · Moon 50% (first quarter) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M42M42 20:15–20:50: quality 0.1M42 20:50–21:05: quality 0.3M42 21:05–21:25: quality 0.2M42 21:25–21:50: quality 0.4M42 21:50–22:10: quality 0.3M45M45 20:15–20:50: quality 0.1M45 20:50–21:20: quality 0.3M45 21:20–21:25: quality 0.2M45 21:25–21:30: quality 0.5M45 21:30–21:55: quality 0.4M45 21:55–22:10: quality 0.3observe M45 21:25–22:05NGC 7000NGC 7000 02:50–03:05: quality 0.4NGC 7000 03:05–03:15: quality 0.5NGC 7000 03:15–03:35: quality 0.6NGC 7000 03:35–03:50: quality 0.7NGC 7000 03:50–04:45: quality 0.8NGC 7000 04:45–05:30: quality 0.9NGC 7000 05:30–06:05: quality 0.5NGC 7000 06:05–06:35: quality 0.1observe NGC 7000 02:50–03:50V1057 CygV1057 Cyg 02:50–03:05: quality 0.4V1057 Cyg 03:05–03:15: quality 0.5V1057 Cyg 03:15–03:35: quality 0.6V1057 Cyg 03:35–03:50: quality 0.7V1057 Cyg 03:50–04:45: quality 0.8V1057 Cyg 04:45–05:30: quality 0.9V1057 Cyg 05:30–06:05: quality 0.5V1057 Cyg 06:05–06:35: quality 0.1observe V1057 Cyg 03:50–06:05M33scheduleM45NGC 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
19:45–21:25 — nothing worth pointing at — 1.67
21:25–22:05 M45 0.67 0.39
22:05–02:50 — nothing worth pointing at — 4.75
02:50–03:50 NGC 7000 1.0 0.57
03:50–06:05 V1057 Cyg 2.25 0.74
06:05–07:05 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 0 unknown — 89.5° at 13:25 76.2° 0.0
M42 Great Orion Nebula 5 unknown 21:25–22:00 (marginal) 42.9° at 18:20 35.4° 0.0
M45 Seven Sisters 6 unknown 21:25–22:05 (marginal) 72.5° at 16:30 42.5° 0.67
NGC 7000 North America Nebula 52 unknown 03:25–05:30 (good) 87.2° at 09:40 105.6° 1.0
V1057 Cyg 52 unknown 03:25–05:30 (good) 87.3° at 09:40 105.7° 2.25
M33 Triangulum Pinwheel 0 unknown — 79.2° at 14:20 69.8° 0.0

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2039-04-01"

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"}.