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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, 18 December 2040 · astronomical night 18:32 → 06:03 (11.51 h) · Moon 100% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:25–18:00: quality 0.1M31 18:00–18:35: quality 0.3M31 18:35–18:40: quality 0.7M31 18:40–21:00: quality 0.6M31 21:00–23:05: quality 0.5M31 23:05–01:00: quality 0.4M31 01:00–01:35: quality 0.3M31 01:35–01:55: quality 0.2observe M31 21:00–22:30M42M42 20:20–21:20: quality 0.2M42 21:20–21:50: quality 0.3M42 21:50–03:45: quality 0.2M42 03:45–03:55: quality 0.1M45M45 17:25–18:00: quality 0.1M45 18:00–18:35: quality 0.2M45 18:35–20:50: quality 0.4M45 20:50–23:20: quality 0.3M45 23:20–03:45: quality 0.2M45 03:45–03:55: quality 0.1NGC 7000NGC 7000 17:25–18:00: quality 0.1NGC 7000 18:00–18:35: quality 0.4NGC 7000 18:35–19:00: quality 0.8NGC 7000 19:00–20:20: quality 0.7NGC 7000 20:20–21:25: quality 0.6NGC 7000 21:25–21:45: quality 0.5NGC 7000 21:45–22:10: quality 0.4NGC 7000 22:10–22:25: quality 0.3observe NGC 7000 18:00–19:30V1057 CygV1057 Cyg 17:25–18:00: quality 0.1V1057 Cyg 18:00–18:35: quality 0.4V1057 Cyg 18:35–19:00: quality 0.8V1057 Cyg 19:00–20:20: quality 0.7V1057 Cyg 20:20–21:25: quality 0.6V1057 Cyg 21:25–21:45: quality 0.5V1057 Cyg 21:45–22:10: quality 0.4V1057 Cyg 22:10–22:25: quality 0.3observe V1057 Cyg 19:30–21:00M33M33 17:25–18:00: quality 0.1M33 18:00–18:35: quality 0.3M33 18:35–20:00: quality 0.6M33 20:00–22:35: quality 0.5M33 22:35–00:50: quality 0.4M33 00:50–01:40: quality 0.3M33 01:40–02:05: quality 0.2observe M33 22:30–01:25scheduleNGC 7000V1057 CygM31M3318:0020:0022:0000:0002:0004:0006:00

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
16:50–18:00 — nothing worth pointing at — 1.17
18:00–19:30 NGC 7000 1.5 0.61
19:30–21:00 V1057 Cyg 1.5 0.66
21:00–22:30 M31 1.5 0.52
22:30–01:25 M33 2.92 0.38
01:25–07:45 — nothing worth pointing at — 6.33

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 62 unknown 18:35–19:45 (good) 89.8° at 19:15 67.0° 1.5
M42 Great Orion Nebula 11 unknown — 42.9° at 00:05 33.1° 0.0
M45 Seven Sisters 30 unknown 18:35–21:50 (marginal) 72.5° at 22:20 32.5° 0.0
NGC 7000 North America Nebula 52 unknown 18:35–21:05 (good) 87.2° at 15:30 99.3° 1.5
V1057 Cyg 52 unknown 18:35–21:05 (good) 87.3° at 15:30 99.3° 1.5
M33 Triangulum Pinwheel 55 unknown 18:35–19:00 (good) 79.2° at 20:05 59.8° 2.92

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2040-12-18"

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"}.