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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 Sunday, 04 April 2027 · astronomical night 21:25 → 05:21 (7.93 h) · Moon 5% (waning crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M42M42 20:20–20:55: quality 0.1M42 20:55–21:10: quality 0.4M42 21:10–21:30: quality 0.3M42 21:30–21:35: quality 0.6M42 21:35–21:50: quality 0.5M42 21:50–21:55: quality 0.4M45M45 20:20–20:55: quality 0.1M45 20:55–21:15: quality 0.4M45 21:15–21:30: quality 0.3M45 21:30–21:35: quality 0.6M45 21:35–21:50: quality 0.5M45 21:50–21:55: quality 0.4observe M45 20:55–21:55NGC 7000NGC 7000 02:35–02:45: quality 0.4NGC 7000 02:45–03:05: quality 0.5NGC 7000 03:05–03:20: quality 0.6NGC 7000 03:20–03:35: quality 0.7NGC 7000 03:35–04:35: quality 0.8NGC 7000 04:35–05:25: quality 0.9NGC 7000 05:25–06:00: quality 0.5NGC 7000 06:00–06:30: quality 0.1observe NGC 7000 02:35–03:45V1057 CygV1057 Cyg 02:40–02:45: quality 0.4V1057 Cyg 02:45–03:05: quality 0.5V1057 Cyg 03:05–03:20: quality 0.6V1057 Cyg 03:20–03:40: quality 0.7V1057 Cyg 03:40–04:35: quality 0.8V1057 Cyg 04:35–05:25: quality 0.9V1057 Cyg 05:25–06:00: quality 0.5V1057 Cyg 06:00–06:30: quality 0.1observe V1057 Cyg 03:45–06:00M33scheduleM45NGC 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
20:55–21:55 M45 1.0 0.42
21:55–02:35 — nothing worth pointing at — 4.67
02:35–03:45 NGC 7000 1.17 0.59
03:45–06:00 V1057 Cyg 2.25 0.75
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 46.7° 0.0
M42 Great Orion Nebula 7 unknown 21:30–21:55 (marginal) 42.9° at 18:05 93.7° 0.0
M45 Seven Sisters 7 unknown 20:55–21:55 (marginal) 72.5° at 16:20 69.4° 1.0
NGC 7000 North America Nebula 55 unknown 03:10–05:25 (good) 87.2° at 09:25 55.5° 1.17
V1057 Cyg 55 unknown 03:15–05:25 (good) 87.3° at 09:30 55.5° 2.25
M33 Triangulum Pinwheel 0 unknown — 79.1° at 14:05 45.3° 0.0

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-04-04"

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"}.