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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 Saturday, 27 March 2027 · astronomical night 20:15 → 05:37 (8.37 h) · Moon 70% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:10–19:30: quality 0.1M42M42 19:10–19:45: quality 0.1M42 19:45–20:20: quality 0.4M42 20:20–20:35: quality 0.8M42 20:35–20:50: quality 0.7M42 20:50–21:05: quality 0.6M42 21:05–21:20: quality 0.5M42 21:20–21:30: quality 0.4observe M42 21:00–21:30M45M45 19:10–19:45: quality 0.1M45 19:45–20:20: quality 0.4M45 20:20–20:40: quality 0.8M45 20:40–20:55: quality 0.7M45 20:55–21:10: quality 0.6M45 21:10–21:20: quality 0.5M45 21:20–21:30: quality 0.4observe M45 19:45–21:00NGC 7000NGC 7000 02:10–02:30: quality 0.4NGC 7000 02:30–02:55: quality 0.5NGC 7000 02:55–04:15: quality 0.6NGC 7000 04:15–05:40: quality 0.7NGC 7000 05:40–06:15: quality 0.4NGC 7000 06:15–06:45: quality 0.1observe NGC 7000 02:10–04:25V1057 CygV1057 Cyg 02:10–02:35: quality 0.4V1057 Cyg 02:35–02:55: quality 0.5V1057 Cyg 02:55–04:15: quality 0.6V1057 Cyg 04:15–05:40: quality 0.7V1057 Cyg 05:40–06:15: quality 0.4V1057 Cyg 06:15–06:45: quality 0.1observe V1057 Cyg 04:25–06:15M33M33 19:10–19:40: quality 0.1scheduleM45NGC 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
18:40–19:45 — nothing worth pointing at — 1.08
19:45–21:00 M45 1.25 0.59
21:00–21:30 M42 0.5 0.49
21:30–02:10 — nothing worth pointing at — 4.67
02:10–04:25 NGC 7000 1.25 0.52
04:25–06:15 V1057 Cyg 1.83 0.6
06:15–07:15 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 0 unknown — 89.6° at 12:45 128.6° 0.0
M42 Great Orion Nebula 21 unknown 20:20–20:55 (good) 42.9° at 17:40 145.5° 0.5
M45 Seven Sisters 22 unknown 20:20–21:00 (good) 72.5° at 15:50 166.0° 1.25
NGC 7000 North America Nebula 33 unknown 04:05–05:40 (good) 87.2° at 10:00 91.6° 1.25
V1057 Cyg 33 unknown 04:05–05:40 (good) 87.3° at 10:00 91.6° 1.83
M33 Triangulum Pinwheel 0 unknown — 79.1° at 13:40 137.8° 0.0

Left out


💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-03-27"

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"}.