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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, 06 January 2039 · astronomical night 18:45 → 06:08 (11.39 h) · Moon 88% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:40–18:15: quality 0.1M31 18:15–18:45: quality 0.3M31 18:45–18:50: quality 0.2M31 18:50–20:50: quality 0.5M31 20:50–23:50: quality 0.4M31 23:50–00:25: quality 0.3M31 00:25–00:45: quality 0.2observe M31 20:55–22:15M42M42 19:10–20:00: quality 0.2M42 20:00–01:10: quality 0.3M42 01:10–01:45: quality 0.4M42 01:45–02:25: quality 0.3M42 02:25–02:45: quality 0.2observe M42 00:55–02:05M45M45 17:40–18:15: quality 0.1M45 18:15–18:50: quality 0.2M45 18:50–19:40: quality 0.4M45 19:40–00:35: quality 0.3M45 00:35–01:55: quality 0.4M45 01:55–02:30: quality 0.3M45 02:30–02:45: quality 0.2observe M45 23:35–00:55observe M45 02:05–02:10NGC 7000NGC 7000 17:40–18:15: quality 0.1NGC 7000 18:15–18:50: quality 0.3NGC 7000 18:50–20:05: quality 0.6NGC 7000 20:05–20:30: quality 0.5NGC 7000 20:30–20:55: quality 0.4NGC 7000 20:55–21:15: quality 0.3observe NGC 7000 18:15–19:35V1057 CygV1057 Cyg 17:40–18:15: quality 0.1V1057 Cyg 18:15–18:50: quality 0.3V1057 Cyg 18:50–20:05: quality 0.6V1057 Cyg 20:05–20:30: quality 0.5V1057 Cyg 20:30–20:55: quality 0.4V1057 Cyg 20:55–21:10: quality 0.3observe V1057 Cyg 19:35–20:55M33M33 17:40–18:15: quality 0.1M33 18:15–18:50: quality 0.2M33 18:50–22:25: quality 0.4M33 22:25–00:30: quality 0.3M33 00:30–00:55: quality 0.2observe M33 22:15–23:35scheduleNGC 7000V1057 CygM31M33M45M4218:0020:0022:0000:0002:0004:0006:00

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
17:05–18:15 — nothing worth pointing at — 1.17
18:15–19:35 NGC 7000 1.33 0.48
19:35–20:55 V1057 Cyg 1.33 0.49
20:55–22:15 M31 1.33 0.42
22:15–23:35 M33 1.33 0.34
23:35–00:55 M45 1.33 0.35
00:55–02:05 M42 1.17 0.34
02:05–02:10 M45 0.08 0.31
02:10–07:50 — nothing worth pointing at — 5.67

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 32 unknown 18:50–00:10 (marginal) 89.6° at 18:00 51.0° 1.33
M42 Great Orion Nebula 20 unknown 22:50–02:05 (marginal) 42.9° at 22:55 30.7° 1.17
M45 Seven Sisters 26 unknown 18:50–02:10 (marginal) 72.5° at 21:05 9.3° 1.42
NGC 7000 North America Nebula 23 unknown 18:50–19:15 (good) 87.2° at 14:15 90.4° 1.33
V1057 Cyg 22 unknown 18:50–19:15 (good) 87.2° at 14:20 90.4° 1.33
M33 Triangulum Pinwheel 25 unknown 18:50–00:10 (marginal) 79.2° at 18:55 39.3° 1.33
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2039-01-06"

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"}.