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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 Thursday, 12 December 2030 · astronomical night 18:30 → 05:59 (11.47 h) · Moon 92% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:25–18:00: quality 0.2M31 18:00–18:35: quality 0.5M31 18:35–19:20: quality 1.0M31 19:20–21:40: quality 0.8M31 21:40–23:25: quality 0.7M31 23:25–01:00: quality 0.6M31 01:00–01:35: quality 0.5M31 01:35–02:00: quality 0.4M31 02:00–02:20: quality 0.3observe M31 21:20–23:00M42M42 20:45–20:50: quality 0.2M42 20:50–21:25: quality 0.3M42 21:25–00:05: quality 0.4M42 00:05–03:30: quality 0.3M42 03:30–04:20: quality 0.2M45M45 17:25–18:00: quality 0.1M45 18:00–18:35: quality 0.4M45 18:35–18:45: quality 0.8M45 18:45–19:20: quality 0.9M45 19:20–22:30: quality 0.6M45 22:30–01:05: quality 0.5M45 01:05–03:30: quality 0.4M45 03:30–04:00: quality 0.3M45 04:00–04:20: quality 0.2observe M45 00:40–03:45NGC 7000NGC 7000 17:25–18:00: quality 0.2NGC 7000 18:00–18:35: quality 0.5NGC 7000 18:35–19:20: quality 1.0NGC 7000 19:20–19:35: quality 0.9NGC 7000 19:35–21:00: quality 0.8NGC 7000 21:00–21:50: quality 0.7NGC 7000 21:50–22:10: quality 0.6NGC 7000 22:10–22:30: quality 0.5NGC 7000 22:30–22:50: quality 0.4observe NGC 7000 18:00–19:40V1057 CygV1057 Cyg 17:25–18:00: quality 0.2V1057 Cyg 18:00–18:35: quality 0.5V1057 Cyg 18:35–19:20: quality 1.0V1057 Cyg 19:20–19:35: quality 0.9V1057 Cyg 19:35–21:00: quality 0.8V1057 Cyg 21:00–21:50: quality 0.7V1057 Cyg 21:50–22:10: quality 0.6V1057 Cyg 22:10–22:30: quality 0.5V1057 Cyg 22:30–22:50: quality 0.4observe V1057 Cyg 19:40–21:20M33M33 17:25–18:00: quality 0.1M33 18:00–18:35: quality 0.5M33 18:35–19:20: quality 1.0M33 19:20–20:50: quality 0.8M33 20:50–23:15: quality 0.7M33 23:15–00:45: quality 0.6M33 00:45–01:45: quality 0.5M33 01:45–02:10: quality 0.4M33 02:10–02:30: quality 0.3observe M33 23:00–00:40scheduleNGC 7000V1057 CygM31M33M4518:0020:0022:0000:0002:0004:0006:00

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
18:00–19:40 NGC 7000 1.67 0.79
19:40–21:20 V1057 Cyg 1.67 0.78
21:20–23:00 M31 1.67 0.73
23:00–00:40 M33 1.67 0.61
00:40–03:45 M45 3.08 0.4
03:45–07:40 — nothing worth pointing at — 3.92

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 18:35–00:10 (good) 89.7° at 19:40 88.2° 1.67
M42 Great Orion Nebula 25 unknown 21:10–02:00 (marginal) 42.9° at 00:30 38.0° 0.0
M45 Seven Sisters 89 unknown 18:35–21:30 (good) 72.5° at 22:45 54.0° 3.08
NGC 7000 North America Nebula 89 unknown 18:35–22:00 (good) 87.2° at 15:55 115.2° 1.67
V1057 Cyg 89 unknown 18:35–22:00 (good) 87.3° at 15:55 115.3° 1.67
M33 Triangulum Pinwheel 100 unknown 18:35–23:55 (good) 79.1° at 20:30 81.8° 1.67

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2030-12-12"

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"}.