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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 Monday, 09 December 2041 · astronomical night 18:30 → 05:57 (11.45 h) · Moon 94% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:25–18:00: quality 0.2M31 18:00–18:15: quality 0.5M31 18:15–18:35: quality 0.4M31 18:35–19:05: quality 0.8M31 19:05–21:50: quality 0.7M31 21:50–23:40: quality 0.6M31 23:40–01:30: quality 0.5M31 01:30–01:55: quality 0.4M31 01:55–02:25: quality 0.3M31 02:25–02:35: quality 0.2observe M31 21:10–22:45M42M42 20:55–21:15: quality 0.2M42 21:15–22:00: quality 0.3M42 22:00–22:20: quality 0.4M42 22:20–03:35: quality 0.3M42 03:35–04:30: quality 0.2observe M42 00:20–00:45M45M45 17:25–18:00: quality 0.1M45 18:00–18:15: quality 0.4M45 18:15–18:35: quality 0.3M45 18:35–22:30: quality 0.5M45 22:30–01:25: quality 0.4M45 01:25–03:55: quality 0.3M45 03:55–04:30: quality 0.2observe M45 00:45–03:15NGC 7000NGC 7000 17:25–18:00: quality 0.2NGC 7000 18:00–18:15: quality 0.5NGC 7000 18:15–18:35: quality 0.4NGC 7000 18:35–19:00: quality 0.9NGC 7000 19:00–20:15: quality 0.8NGC 7000 20:15–21:40: quality 0.7NGC 7000 21:40–22:10: quality 0.6NGC 7000 22:10–22:30: quality 0.5NGC 7000 22:30–22:55: quality 0.4NGC 7000 22:55–23:00: quality 0.3observe NGC 7000 18:00–19:35V1057 CygV1057 Cyg 17:25–18:00: quality 0.2V1057 Cyg 18:00–18:15: quality 0.5V1057 Cyg 18:15–18:35: quality 0.4V1057 Cyg 18:35–19:00: quality 0.9V1057 Cyg 19:00–20:15: quality 0.8V1057 Cyg 20:15–21:40: quality 0.7V1057 Cyg 21:40–22:10: quality 0.6V1057 Cyg 22:10–22:30: quality 0.5V1057 Cyg 22:30–22:55: quality 0.4V1057 Cyg 22:55–23:00: quality 0.3observe V1057 Cyg 19:35–21:10M33M33 17:25–18:00: quality 0.1M33 18:00–18:15: quality 0.5M33 18:15–18:35: quality 0.4M33 18:35–21:05: quality 0.7M33 21:05–23:30: quality 0.6M33 23:30–01:10: quality 0.5M33 01:10–02:05: quality 0.4M33 02:05–02:30: quality 0.3M33 02:30–02:45: quality 0.2observe M33 22:45–00:20scheduleNGC 7000V1057 CygM31M33M4518:0020:0022:0000:0002:0004:0006:00

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
16:50–18:00 — nothing worth pointing at — 1.17
18:00–19:35 NGC 7000 1.58 0.7
19:35–21:10 V1057 Cyg 1.58 0.74
21:10–22:45 M31 1.58 0.65
22:45–00:20 M33 1.58 0.55
00:20–00:45 M42 0.42 0.3
00:45–03:15 M45 2.5 0.33
03:15–07:40 — nothing worth pointing at — 4.42

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 77 unknown 18:35–22:55 (good) 89.8° at 19:50 76.6° 1.58
M42 Great Orion Nebula 19 unknown 21:35–00:45 (marginal) 42.9° at 00:40 39.6° 0.42
M45 Seven Sisters 54 unknown 18:35–03:15 (marginal) 72.5° at 22:55 45.1° 2.5
NGC 7000 North America Nebula 73 unknown 18:35–22:00 (good) 87.2° at 16:05 103.9° 1.58
V1057 Cyg 73 unknown 18:35–22:00 (good) 87.3° at 16:05 104.0° 1.58
M33 Triangulum Pinwheel 75 unknown 18:35–22:30 (good) 79.2° at 20:40 71.2° 1.58
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2041-12-09"

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"}.