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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, 17 January 2041 · astronomical night 18:56 → 06:06 (11.17 h) · Moon 100% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:50–18:25: quality 0.1M31 18:25–19:00: quality 0.4M31 19:00–20:00: quality 0.8M31 20:00–21:15: quality 0.7M31 21:15–22:50: quality 0.6M31 22:50–23:15: quality 0.5M31 23:15–23:40: quality 0.4M31 23:40–00:00: quality 0.3observe M31 21:35–22:45M42M42 18:25–18:35: quality 0.1M42 18:35–19:00: quality 0.2M42 19:00–19:25: quality 0.4M42 19:25–20:00: quality 0.5M42 20:00–23:20: quality 0.4M42 23:20–01:20: quality 0.3M42 01:20–02:00: quality 0.2observe M42 23:55–00:55M45M45 17:50–18:25: quality 0.1M45 18:25–19:00: quality 0.3M45 19:00–19:05: quality 0.7M45 19:05–21:20: quality 0.6M45 21:20–23:20: quality 0.5M45 23:20–01:10: quality 0.4M45 01:10–01:40: quality 0.3M45 01:40–02:00: quality 0.2observe M45 22:45–23:55observe M45 00:55–01:25NGC 7000NGC 7000 17:50–18:25: quality 0.1NGC 7000 18:25–19:00: quality 0.4NGC 7000 19:00–19:25: quality 0.7NGC 7000 19:25–19:45: quality 0.6NGC 7000 19:45–20:05: quality 0.5NGC 7000 20:05–20:25: quality 0.4NGC 7000 06:40–07:15: quality 0.1observe NGC 7000 19:35–20:25V1057 CygV1057 Cyg 17:50–18:25: quality 0.1V1057 Cyg 18:25–19:00: quality 0.4V1057 Cyg 19:00–19:25: quality 0.7V1057 Cyg 19:25–19:45: quality 0.6V1057 Cyg 19:45–20:05: quality 0.5V1057 Cyg 20:05–20:25: quality 0.4V1057 Cyg 06:40–07:15: quality 0.1observe V1057 Cyg 18:25–19:35M33M33 17:50–18:25: quality 0.1M33 18:25–19:00: quality 0.4M33 19:00–19:30: quality 0.8M33 19:30–21:20: quality 0.7M33 21:20–22:45: quality 0.6M33 22:45–23:25: quality 0.5M33 23:25–23:50: quality 0.4M33 23:50–00:10: quality 0.3observe M33 20:25–21:35scheduleV1057 CygNGC 7000M33M31M45M4218:0020:0022:0000:0002:0004:0006:00

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
17:15–18:25 — nothing worth pointing at — 1.17
18:25–19:35 V1057 Cyg 1.17 0.52
19:35–20:25 NGC 7000 0.83 0.47
20:25–21:35 M33 1.17 0.68
21:35–22:45 M31 1.17 0.59
22:45–23:55 M45 1.17 0.45
23:55–00:55 M42 1.0 0.32
00:55–01:25 M45 0.5 0.35
01:25–07:45 — nothing worth pointing at — 6.33

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 65 unknown 19:00–22:00 (good) 89.7° at 17:15 93.4° 1.17
M42 Great Orion Nebula 30 unknown 19:00–00:55 (marginal) 42.9° at 22:10 52.6° 1.0
M45 Seven Sisters 59 unknown 19:00–20:10 (good) 72.5° at 20:20 65.2° 1.67
NGC 7000 North America Nebula 19 unknown 19:00–19:35 (good) 87.2° at 13:30 111.8° 0.83
V1057 Cyg 19 unknown 19:00–19:35 (good) 87.2° at 13:30 111.9° 1.17
M33 Triangulum Pinwheel 66 unknown 19:00–22:00 (good) 79.2° at 18:05 90.2° 1.17
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2041-01-17"

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"}.