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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, 11 January 2039 · astronomical night 18:49 → 06:08 (11.31 h) · Moon 98% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:45–18:15: quality 0.2M31 18:15–18:20: quality 0.1M31 18:20–18:50: quality 0.4M31 18:50–20:50: quality 0.8M31 20:50–22:10: quality 0.7M31 22:10–23:25: quality 0.6M31 23:25–23:45: quality 0.5M31 23:45–00:10: quality 0.4M31 00:10–00:25: quality 0.3observe M31 22:10–23:30M42M42 18:50–19:10: quality 0.3M42 19:10–19:40: quality 0.4M42 19:40–21:40: quality 0.5M42 21:40–00:30: quality 0.4M42 00:30–01:50: quality 0.3M42 01:50–02:25: quality 0.2observe M42 00:50–01:30M45M45 17:45–18:20: quality 0.1M45 18:20–18:50: quality 0.4M45 18:50–20:20: quality 0.7M45 20:20–22:50: quality 0.6M45 22:50–00:30: quality 0.5M45 00:30–01:45: quality 0.4M45 01:45–02:10: quality 0.3M45 02:10–02:25: quality 0.2observe M45 23:30–00:50observe M45 01:30–01:55NGC 7000NGC 7000 17:45–18:20: quality 0.1NGC 7000 18:20–18:50: quality 0.4NGC 7000 18:50–19:05: quality 0.8NGC 7000 19:05–19:55: quality 0.7NGC 7000 19:55–20:10: quality 0.6NGC 7000 20:10–20:30: quality 0.5NGC 7000 20:30–20:50: quality 0.4NGC 7000 20:50–20:55: quality 0.3NGC 7000 07:05–07:20: quality 0.1observe NGC 7000 19:40–20:50V1057 CygV1057 Cyg 17:45–18:20: quality 0.1V1057 Cyg 18:20–18:50: quality 0.4V1057 Cyg 18:50–19:05: quality 0.8V1057 Cyg 19:05–19:55: quality 0.7V1057 Cyg 19:55–20:10: quality 0.6V1057 Cyg 20:10–20:30: quality 0.5V1057 Cyg 20:30–20:50: quality 0.4V1057 Cyg 20:50–20:55: quality 0.3V1057 Cyg 07:05–07:20: quality 0.1observe V1057 Cyg 18:20–19:40M33M33 17:45–18:15: quality 0.2M33 18:15–18:20: quality 0.1M33 18:20–18:50: quality 0.4M33 18:50–20:55: quality 0.8M33 20:55–22:15: quality 0.7M33 22:15–23:40: quality 0.6M33 23:40–23:55: quality 0.5M33 23:55–00:20: quality 0.4M33 00:20–00:35: quality 0.3observe M33 20:50–22:10scheduleV1057 CygNGC 7000M33M31M4518:0020:0022:0000:0002:0004:0006:00

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 V1057 Cyg 1.33 0.61
19:40–20:50 NGC 7000 1.17 0.54
20:50–22:10 M33 1.33 0.71
22:10–23:30 M31 1.33 0.6
23:30–00:50 M45 1.33 0.47
00:50–01:30 M42 0.67 0.33
01:30–01:55 M45 0.42 0.35
01:55–07:50 — nothing worth pointing at — 5.92

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 82 unknown 18:50–22:55 (good) 89.6° at 17:40 97.1° 1.33
M42 Great Orion Nebula 35 unknown 18:55–01:30 (marginal) 42.9° at 22:35 54.0° 0.67
M45 Seven Sisters 72 unknown 18:50–21:30 (good) 72.5° at 20:45 68.6° 1.75
NGC 7000 North America Nebula 30 unknown 18:50–20:05 (good) 87.2° at 14:00 114.4° 1.17
V1057 Cyg 30 unknown 18:50–20:05 (good) 87.3° at 14:00 114.5° 1.33
M33 Triangulum Pinwheel 81 unknown 18:50–22:55 (good) 79.2° at 18:35 93.9° 1.33
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2039-01-11"

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"}.