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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 Friday, 11 January 2030 · astronomical night 18:49 → 06:08 (11.3 h) · Moon 53% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:45–18:20: quality 0.1M31 18:20–18:50: quality 0.3M31 18:50–23:25: quality 0.6M31 23:25–23:45: quality 0.5M31 23:45–00:10: quality 0.4M31 00:10–00:20: quality 0.3observe M31 23:30–00:10M42M42 18:45–18:50: quality 0.1M42 18:50–19:00: quality 0.3M42 19:00–19:20: quality 0.4M42 19:20–19:45: quality 0.5M42 19:45–21:15: quality 0.6M42 21:15–01:15: quality 0.7M42 01:15–01:25: quality 0.8M42 01:25–01:45: quality 0.7M42 01:45–02:00: quality 0.6M42 02:00–02:15: quality 0.5M42 02:15–02:20: quality 0.4observe M42 00:10–02:20M45M45 17:45–18:20: quality 0.1M45 18:20–18:50: quality 0.3M45 18:50–21:00: quality 0.6M45 21:00–01:15: quality 0.7M45 01:15–01:35: quality 0.8M45 01:35–01:50: quality 0.7M45 01:50–02:00: quality 0.6M45 02:00–02:15: quality 0.5M45 02:15–02:20: quality 0.4observe M45 22:10–23:30NGC 7000NGC 7000 17:45–18:20: quality 0.1NGC 7000 18:20–18:50: quality 0.3NGC 7000 18:50–19:50: quality 0.6NGC 7000 19:50–20:15: quality 0.5NGC 7000 20:15–20:40: quality 0.4NGC 7000 20:40–20:50: quality 0.3NGC 7000 07:05–07:20: quality 0.1observe NGC 7000 18:20–19:40V1057 CygV1057 Cyg 17:45–18:20: quality 0.1V1057 Cyg 18:20–18:50: quality 0.3V1057 Cyg 18:50–19:50: quality 0.6V1057 Cyg 19:50–20:15: quality 0.5V1057 Cyg 20:15–20:40: quality 0.4V1057 Cyg 20:40–20:50: quality 0.3V1057 Cyg 07:05–07:20: quality 0.1observe V1057 Cyg 19:40–20:50M33M33 17:45–18:20: quality 0.1M33 18:20–18:50: quality 0.3M33 18:50–23:40: quality 0.6M33 23:40–00:05: quality 0.5M33 00:05–00:25: quality 0.4M33 00:25–00:35: quality 0.3observe M33 20:50–22:10scheduleNGC 7000V1057 CygM33M45M4218:0020:0022:0000:0002:0004:0006:00

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
17:10–18:20 — nothing worth pointing at — 1.17
18:20–19:40 NGC 7000 1.33 0.49
19:40–20:50 V1057 Cyg 1.17 0.45
20:50–22:10 M33 1.33 0.62
22:10–23:30 M45 1.33 0.7
23:30–00:10 M31 0.67 0.44
00:10–02:20 M42 2.17 0.66
02:20–07:50 — nothing worth pointing at — 5.5

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 52 unknown 18:50–21:30 (good) 89.7° at 17:40 28.9° 0.67
M42 Great Orion Nebula 80 unknown 20:10–01:50 (good) 42.9° at 22:30 64.4° 2.17
M45 Seven Sisters 81 unknown 18:50–01:55 (good) 72.5° at 20:45 34.1° 1.33
NGC 7000 North America Nebula 19 unknown 18:50–19:15 (good) 87.2° at 13:55 64.0° 1.33
V1057 Cyg 19 unknown 18:50–19:15 (good) 87.3° at 13:55 64.0° 1.17
M33 Triangulum Pinwheel 56 unknown 18:50–22:35 (good) 79.1° at 18:30 16.6° 1.33
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2030-01-11"

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"}.