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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, 12 January 2030 · astronomical night 18:50 → 06:07 (11.29 h) · Moon 63% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:45–18:20: quality 0.1M31 18:20–18:55: quality 0.3M31 18:55–23:25: quality 0.5M31 23:25–23:55: quality 0.4M31 23:55–00:20: quality 0.3observe M31 23:25–00:10M42M42 18:45–18:55: quality 0.1M42 18:55–19:10: quality 0.3M42 19:10–19:35: quality 0.4M42 19:35–20:55: quality 0.5M42 20:55–01:30: quality 0.6M42 01:30–01:55: quality 0.5M42 01:55–02:20: quality 0.4observe M42 22:05–23:25M45M45 17:45–18:20: quality 0.1M45 18:20–18:55: quality 0.3M45 18:55–21:10: quality 0.5M45 21:10–01:30: quality 0.6M45 01:30–01:50: quality 0.5M45 01:50–02:10: quality 0.4M45 02:10–02:15: quality 0.3M45 02:15–02:20: quality 0.4observe M45 00:10–02:20NGC 7000NGC 7000 17:45–18:20: quality 0.1NGC 7000 18:20–18:55: quality 0.3NGC 7000 18:55–19:40: quality 0.6NGC 7000 19:40–20:05: quality 0.5NGC 7000 20:05–20:30: quality 0.4NGC 7000 20:30–20:50: quality 0.3NGC 7000 07:00–07:20: quality 0.1observe NGC 7000 18:20–18:40observe NGC 7000 18:55–19:55V1057 CygV1057 Cyg 17:45–18:20: quality 0.1V1057 Cyg 18:20–18:55: quality 0.3V1057 Cyg 18:55–19:40: quality 0.6V1057 Cyg 19:40–20:05: quality 0.5V1057 Cyg 20:05–20:30: quality 0.4V1057 Cyg 20:30–20:50: quality 0.3V1057 Cyg 07:00–07:20: quality 0.1observe V1057 Cyg 19:55–20:45M33M33 17:45–18:20: quality 0.1M33 18:20–18:55: quality 0.3M33 18:55–23:45: quality 0.5M33 23:45–00:10: quality 0.4M33 00:10–00:30: quality 0.3observe M33 20:45–22:05scheduleNGC 7000V1057 CygM33M42M4518:0020:0022:0000:0002:0004:0006:00

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
18:20–18:40 NGC 7000 0.33 0.3
18:40–18:55 — nothing worth pointing at — 0.25
18:55–19:55 NGC 7000 1.0 0.56
19:55–20:45 V1057 Cyg 0.83 0.39
20:45–22:05 M33 1.33 0.53
22:05–23:25 M42 1.33 0.61
23:25–00:10 M31 0.75 0.38
00:10–02:20 M45 2.17 0.52
02:20–07:50 — nothing worth pointing at — 5.5

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 38 unknown 18:55–00:10 (marginal) 89.6° at 17:35 30.8° 0.75
M42 Great Orion Nebula 62 unknown 22:25–01:20 (good) 42.9° at 22:30 54.5° 1.33
M45 Seven Sisters 60 unknown 18:55–02:20 (marginal) 72.5° at 20:40 22.3° 2.17
NGC 7000 North America Nebula 17 unknown 18:55–20:45 (marginal) 87.2° at 13:55 70.0° 1.33
V1057 Cyg 17 unknown 18:55–20:45 (marginal) 87.3° at 13:55 70.0° 0.83
M33 Triangulum Pinwheel 41 unknown 18:55–00:20 (marginal) 79.1° at 18:30 16.0° 1.33
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2030-01-12"

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"}.