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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 Wednesday, 31 December 2031 · astronomical night 18:40 → 06:07 (11.46 h) · Moon 91% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:35–18:10: quality 0.2M31 18:10–18:45: quality 0.5M31 18:45–20:00: quality 1.0M31 20:00–21:20: quality 0.9M31 21:20–22:35: quality 0.8M31 22:35–00:00: quality 0.7M31 00:00–00:20: quality 0.6M31 00:20–00:40: quality 0.5M31 00:40–01:00: quality 0.4M31 01:00–01:10: quality 0.3observe M31 19:40–21:10M42M42 19:30–19:40: quality 0.4M42 19:40–19:55: quality 0.5M42 19:55–20:00: quality 0.6M42 20:00–20:10: quality 0.4M42 20:10–00:20: quality 0.5M42 00:20–02:15: quality 0.4M42 02:15–02:50: quality 0.3M42 02:50–03:10: quality 0.2observe M42 00:35–02:15M45M45 17:35–18:10: quality 0.1M45 18:10–18:45: quality 0.5M45 18:45–18:50: quality 0.9M45 18:50–20:00: quality 1.0M45 20:00–20:50: quality 0.8M45 20:50–23:30: quality 0.7M45 23:30–01:00: quality 0.6M45 01:00–02:20: quality 0.5M45 02:20–02:40: quality 0.4M45 02:40–03:05: quality 0.3observe M45 23:05–00:35observe M45 02:15–02:55NGC 7000NGC 7000 17:35–18:10: quality 0.1NGC 7000 18:10–18:45: quality 0.5NGC 7000 18:45–19:40: quality 0.9NGC 7000 19:40–20:15: quality 0.8NGC 7000 20:15–20:45: quality 0.7NGC 7000 20:45–21:00: quality 0.6NGC 7000 21:00–21:20: quality 0.5NGC 7000 21:20–21:35: quality 0.4observe NGC 7000 21:10–21:35V1057 CygV1057 Cyg 17:35–18:10: quality 0.1V1057 Cyg 18:10–18:45: quality 0.5V1057 Cyg 18:45–19:40: quality 0.9V1057 Cyg 19:40–20:15: quality 0.8V1057 Cyg 20:15–20:45: quality 0.7V1057 Cyg 20:45–21:00: quality 0.6V1057 Cyg 21:00–21:20: quality 0.5V1057 Cyg 21:20–21:35: quality 0.4observe V1057 Cyg 18:10–19:40M33M33 17:35–18:10: quality 0.2M33 18:10–18:45: quality 0.5M33 18:45–20:00: quality 1.0M33 20:00–20:55: quality 0.9M33 20:55–22:40: quality 0.8M33 22:40–00:00: quality 0.7M33 00:00–00:35: quality 0.6M33 00:35–00:50: quality 0.5M33 00:50–01:10: quality 0.4M33 01:10–01:20: quality 0.3observe M33 21:35–23:05scheduleV1057 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
16:55–18:10 — nothing worth pointing at — 1.25
18:10–19:40 V1057 Cyg 1.5 0.72
19:40–21:10 M31 1.5 0.9
21:10–21:35 NGC 7000 0.42 0.44
21:35–23:05 M33 1.5 0.78
23:05–00:35 M45 1.5 0.63
00:35–02:15 M42 1.67 0.4
02:15–02:55 M45 0.67 0.38
02:55–07:50 — nothing worth pointing at — 4.92

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 18:45–00:10 (good) 89.7° at 18:25 107.0° 1.5
M42 Great Orion Nebula 49 unknown 19:30–02:30 (marginal) 42.9° at 23:15 54.5° 1.67
M45 Seven Sisters 100 unknown 18:45–00:15 (good) 72.5° at 21:30 75.7° 2.17
NGC 7000 North America Nebula 55 unknown 18:45–20:55 (good) 87.2° at 14:40 124.2° 0.42
V1057 Cyg 55 unknown 18:45–20:55 (good) 87.3° at 14:40 124.2° 1.5
M33 Triangulum Pinwheel 100 unknown 18:45–00:25 (good) 79.1° at 19:15 102.7° 1.5
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2031-12-31"

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"}.