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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 Tuesday, 06 April 2027 · astronomical night 21:28 → 05:17 (7.82 h) · Moon 0% (new moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 06:25–06:30: quality 0.1M42M42 20:20–20:55: quality 0.1M42 20:55–21:00: quality 0.4M42 21:00–21:30: quality 0.3M42 21:30–21:40: quality 0.5M42 21:40–21:50: quality 0.4M45M45 20:20–20:55: quality 0.1M45 20:55–21:10: quality 0.4M45 21:10–21:30: quality 0.3M45 21:30–21:40: quality 0.5M45 21:40–21:50: quality 0.4observe M45 20:55–21:20observe M45 21:30–21:50NGC 7000NGC 7000 02:30–02:40: quality 0.4NGC 7000 02:40–02:55: quality 0.5NGC 7000 02:55–03:15: quality 0.6NGC 7000 03:15–03:30: quality 0.7NGC 7000 03:30–04:25: quality 0.8NGC 7000 04:25–05:20: quality 0.9NGC 7000 05:20–05:55: quality 0.5NGC 7000 05:55–06:30: quality 0.1observe NGC 7000 02:30–03:35V1057 CygV1057 Cyg 02:30–02:40: quality 0.4V1057 Cyg 02:40–02:55: quality 0.5V1057 Cyg 02:55–03:15: quality 0.6V1057 Cyg 03:15–03:30: quality 0.7V1057 Cyg 03:30–04:25: quality 0.8V1057 Cyg 04:25–05:20: quality 0.9V1057 Cyg 05:20–05:55: quality 0.5V1057 Cyg 05:55–06:30: quality 0.1observe V1057 Cyg 03:35–05:55M33scheduleNGC 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
19:50–20:55 — nothing worth pointing at — 1.08
20:55–21:20 M45 0.42 0.35
21:20–21:30 — nothing worth pointing at — 0.17
21:30–21:50 M45 0.33 0.46
21:50–02:30 — nothing worth pointing at — 4.67
02:30–03:35 NGC 7000 1.08 0.59
03:35–05:55 V1057 Cyg 2.33 0.76
05:55–06:55 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 0 unknown — 89.5° at 13:05 31.1° 0.0
M42 Great Orion Nebula 5 unknown 21:30–21:50 (marginal) 42.9° at 18:00 72.1° 0.0
M45 Seven Sisters 5 unknown 21:30–21:50 (marginal) 72.5° at 16:10 43.5° 0.75
NGC 7000 North America Nebula 56 unknown 03:05–05:20 (good) 87.3° at 09:20 60.5° 1.08
V1057 Cyg 56 unknown 03:05–05:20 (good) 87.3° at 09:20 60.5° 2.33
M33 Triangulum Pinwheel 0 unknown — 79.1° at 14:00 22.5° 0.0

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-04-06"

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"}.