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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, 08 January 2041 · astronomical night 18:47 → 06:08 (11.35 h) · Moon 45% (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 18:50–23:30: quality 0.7M31 23:30–23:50: quality 0.6M31 23:50–00:00: quality 0.5M31 00:00–00:10: quality 0.6M31 00:10–00:25: quality 0.5M31 00:25–00:35: quality 0.4observe M31 22:25–23:50M42M42 19:00–19:05: quality 0.3M42 19:05–19:20: quality 0.4M42 19:20–19:40: quality 0.5M42 19:40–20:00: quality 0.6M42 20:00–22:15: quality 0.7M42 22:15–00:00: quality 0.8M42 00:00–00:30: quality 0.9M42 00:30–01:40: quality 0.8M42 01:40–01:55: quality 0.7M42 01:55–02:10: quality 0.6M42 02:10–02:25: quality 0.5M42 02:25–02:35: quality 0.4observe M42 00:35–02:35M45M45 17:40–18:15: quality 0.1M45 18:15–18:50: quality 0.4M45 18:50–19:50: quality 0.7M45 19:50–00:00: quality 0.8M45 00:00–01:00: quality 0.9M45 01:00–01:45: quality 0.8M45 01:45–02:00: quality 0.7M45 02:00–02:15: quality 0.6M45 02:15–02:25: quality 0.5M45 02:25–02:35: quality 0.4observe M45 21:00–22:25NGC 7000NGC 7000 17:40–18:15: quality 0.1NGC 7000 18:15–18:35: quality 0.4NGC 7000 18:35–18:50: quality 0.3NGC 7000 18:50–19:40: quality 0.7NGC 7000 19:40–20:15: quality 0.6NGC 7000 20:15–20:35: quality 0.5NGC 7000 20:35–21:00: quality 0.4NGC 7000 21:00–21:05: quality 0.3NGC 7000 07:15–07:20: quality 0.1observe NGC 7000 18:15–19:40V1057 CygV1057 Cyg 17:40–18:15: quality 0.1V1057 Cyg 18:15–18:35: quality 0.4V1057 Cyg 18:35–18:50: quality 0.3V1057 Cyg 18:50–19:40: quality 0.7V1057 Cyg 19:40–20:15: quality 0.6V1057 Cyg 20:15–20:35: quality 0.5V1057 Cyg 20:35–20:55: quality 0.4V1057 Cyg 20:55–21:05: quality 0.3V1057 Cyg 07:15–07:20: quality 0.1observe V1057 Cyg 19:40–21:00M33M33 17:40–18:15: quality 0.1M33 18:15–18:50: quality 0.3M33 18:50–23:45: quality 0.7M33 23:45–00:00: quality 0.6M33 00:00–00:10: quality 0.7M33 00:10–00:20: quality 0.6M33 00:20–00:35: quality 0.5M33 00:35–00:45: quality 0.4observe M33 23:50–00:35scheduleNGC 7000V1057 CygM45M31M4218:0020:0022:0000:0002:0004:0006:00

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 0.54
19:40–21:00 V1057 Cyg 1.33 0.52
21:00–22:25 M45 1.42 0.79
22:25–23:50 M31 1.42 0.65
23:50–00:35 M33 0.75 0.59
00:35–02:35 M42 2.0 0.7
02:35–07:50 — nothing worth pointing at — 5.25

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 74 unknown 18:50–23:40 (good) 89.6° at 17:50 39.3° 1.42
M42 Great Orion Nebula 87 unknown 19:50–02:00 (good) 42.9° at 22:45 70.9° 2.0
M45 Seven Sisters 92 unknown 18:50–02:05 (good) 72.5° at 20:55 47.3° 1.42
NGC 7000 North America Nebula 27 unknown 18:50–20:05 (good) 87.2° at 14:10 66.5° 1.42
V1057 Cyg 27 unknown 18:50–20:05 (good) 87.2° at 14:10 66.5° 1.33
M33 Triangulum Pinwheel 73 unknown 18:50–23:55 (good) 79.2° at 18:45 30.2° 0.75
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2041-01-08"

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"}.