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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 Sunday, 06 January 2041 · astronomical night 18:45 → 06:08 (11.38 h) · Moon 24% (waxing crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:40–18:15: quality 0.1M31 18:15–18:50: quality 0.4M31 18:50–22:50: quality 0.9M31 22:50–23:45: quality 0.8M31 23:45–00:00: quality 0.7M31 00:00–00:15: quality 0.6M31 00:15–00:35: quality 0.5M31 00:35–00:40: quality 0.4observe M31 23:45–00:35M42M42 19:05–19:15: quality 0.4M42 19:15–19:35: quality 0.5M42 19:35–19:50: quality 0.6M42 19:50–20:10: quality 0.7M42 20:10–21:35: quality 0.8M42 21:35–00:35: quality 0.9M42 00:35–01:45: quality 0.8M42 01:45–02:00: quality 0.7M42 02:00–02:20: quality 0.6M42 02:20–02:35: quality 0.5M42 02:35–02:40: quality 0.4observe M42 00:35–02:40M45M45 17:40–18:15: quality 0.1M45 18:15–18:50: quality 0.4M45 18:50–21:35: quality 0.9M45 21:35–23:45: quality 1.0M45 23:45–01:05: quality 0.9M45 01:05–01:55: quality 0.8M45 01:55–02:05: quality 0.7M45 02:05–02:20: quality 0.6M45 02:20–02:35: quality 0.5M45 02:35–02:40: quality 0.4observe M45 22:20–23:45NGC 7000NGC 7000 17:40–18:15: quality 0.1NGC 7000 18:15–18:50: quality 0.4NGC 7000 18:50–19:40: quality 0.8NGC 7000 19:40–20:20: quality 0.7NGC 7000 20:20–20:35: quality 0.6NGC 7000 20:35–20:55: quality 0.5NGC 7000 20:55–21:10: quality 0.4observe NGC 7000 18:15–19:40V1057 CygV1057 Cyg 17:40–18:15: quality 0.1V1057 Cyg 18:15–18:50: quality 0.4V1057 Cyg 18:50–19:40: quality 0.8V1057 Cyg 19:40–20:15: quality 0.7V1057 Cyg 20:15–20:35: quality 0.6V1057 Cyg 20:35–20:55: quality 0.5V1057 Cyg 20:55–21:10: quality 0.4observe V1057 Cyg 19:40–20:55M33M33 17:40–18:15: quality 0.1M33 18:15–18:50: quality 0.4M33 18:50–21:35: quality 0.9M33 21:35–21:55: quality 1.0M33 21:55–23:15: quality 0.9M33 23:15–00:00: quality 0.8M33 00:00–00:15: quality 0.7M33 00:15–00:30: quality 0.6M33 00:30–00:45: quality 0.5M33 00:45–00:50: quality 0.4observe M33 20:55–22:20scheduleNGC 7000V1057 CygM33M45M31M4218:0020:0022:0000:0002:0004:0006:00

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
18:15–19:40 NGC 7000 1.42 0.62
19:40–20:55 V1057 Cyg 1.25 0.64
20:55–22:20 M33 1.42 0.93
22:20–23:45 M45 1.42 0.99
23:45–00:35 M31 0.83 0.59
00:35–02:40 M42 2.08 0.72
02:40–07:50 — nothing worth pointing at — 5.17

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 94 unknown 18:50–00:10 (good) 89.8° at 18:00 55.7° 0.83
M42 Great Orion Nebula 89 unknown 19:40–02:10 (good) 42.9° at 22:50 94.8° 2.08
M45 Seven Sisters 100 unknown 18:50–02:15 (good) 72.5° at 21:05 75.4° 1.42
NGC 7000 North America Nebula 37 unknown 18:50–20:25 (good) 87.2° at 14:15 62.4° 1.42
V1057 Cyg 37 unknown 18:50–20:25 (good) 87.3° at 14:15 62.3° 1.25
M33 Triangulum Pinwheel 97 unknown 18:50–00:25 (good) 79.2° at 18:50 53.4° 1.42
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2041-01-06"

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"}.