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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, 30 December 2025 · astronomical night 18:39 → 06:07 (11.47 h) · Moon 83% (waxing gibbous) · weather: ERA5 history

M31M31 17:35–18:10: quality 0.1M31 18:10–18:40: quality 0.2M31 18:40–20:00: quality 0.4observe M31 19:45–20:00M42M42 19:35–20:00: quality 0.2M45M45 18:00–18:10: quality 0.1M45 18:10–18:40: quality 0.2M45 18:40–19:00: quality 0.4M45 19:00–20:00: quality 0.3NGC 7000NGC 7000 17:35–18:10: quality 0.1NGC 7000 18:10–18:40: quality 0.3NGC 7000 18:40–19:00: quality 0.6NGC 7000 19:00–20:00: quality 0.5observe NGC 7000 18:40–19:15V1057 CygV1057 Cyg 17:35–18:10: quality 0.1V1057 Cyg 18:10–18:40: quality 0.3V1057 Cyg 18:40–19:00: quality 0.6V1057 Cyg 19:00–20:00: quality 0.5observe V1057 Cyg 18:10–18:15observe V1057 Cyg 19:15–19:45M33M33 18:00–18:10: quality 0.1M33 18:10–18:40: quality 0.2M33 18:40–19:00: quality 0.4M33 19:00–20:00: quality 0.3schedule18:0020:0022:0000:0002:0004:0006:00

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
16:55–18:10 — nothing worth pointing at — 1.25
18:10–18:15 V1057 Cyg 0.08 0.3
18:15–18:40 — nothing worth pointing at — 0.42
18:40–19:15 NGC 7000 0.58 0.54
19:15–19:45 V1057 Cyg 0.5 0.48
19:45–20:00 M31 0.25 0.35
20:00–07:50 — nothing worth pointing at — 11.83

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 27 7 18:40–20:00 (marginal) 89.5° at 18:30 35.7° 0.25
M42 Great Orion Nebula 36 1 — 42.9° at 23:20 45.5° 0.0
M45 Seven Sisters 37 6 18:40–20:00 (marginal) 72.5° at 21:30 8.9° 0.0
NGC 7000 North America Nebula 24 13 18:40–20:00 (marginal) 87.3° at 14:45 76.1° 0.58
V1057 Cyg 24 13 18:40–20:00 (marginal) 87.3° at 14:45 76.1° 0.58
M33 Triangulum Pinwheel 24 6 18:40–20:00 (marginal) 79.1° at 19:20 22.5° 0.0

Left out


💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2025-12-30"

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"}.