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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, 04 January 2045 · astronomical night 18:43 → 06:08 (11.41 h) · Moon 96% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:40–18:15: quality 0.2M31 18:15–18:30: quality 0.5M31 18:30–18:45: quality 0.4M31 18:45–21:10: quality 0.8M31 21:10–22:30: quality 0.7M31 22:30–23:50: quality 0.6M31 23:50–00:10: quality 0.5M31 00:10–00:35: quality 0.4M31 00:35–00:50: quality 0.3observe M31 18:15–19:40M42M42 19:15–19:40: quality 0.3M42 19:40–20:10: quality 0.4M42 20:10–21:40: quality 0.5M42 21:40–00:45: quality 0.4M42 00:45–02:15: quality 0.3M42 02:15–02:50: quality 0.2observe M42 23:55–01:45M45M45 17:40–18:15: quality 0.1M45 18:15–18:30: quality 0.5M45 18:30–18:40: quality 0.3M45 18:40–18:45: quality 0.4M45 18:45–20:30: quality 0.7M45 20:30–23:00: quality 0.6M45 23:00–00:45: quality 0.5M45 00:45–02:10: quality 0.4M45 02:10–02:35: quality 0.3M45 02:35–02:50: quality 0.2observe M45 22:30–23:55observe M45 01:45–02:20NGC 7000NGC 7000 17:40–18:15: quality 0.1NGC 7000 18:15–18:30: quality 0.5NGC 7000 18:30–18:45: quality 0.4NGC 7000 18:45–19:30: quality 0.8NGC 7000 19:30–20:20: quality 0.7NGC 7000 20:20–20:40: quality 0.6NGC 7000 20:40–20:55: quality 0.5NGC 7000 20:55–21:15: quality 0.4NGC 7000 21:15–21:20: quality 0.3observe NGC 7000 19:40–21:05V1057 CygV1057 Cyg 17:40–18:15: quality 0.1V1057 Cyg 18:15–18:30: quality 0.5V1057 Cyg 18:30–18:45: quality 0.4V1057 Cyg 18:45–19:30: quality 0.8V1057 Cyg 19:30–20:20: quality 0.7V1057 Cyg 20:20–20:40: quality 0.6V1057 Cyg 20:40–20:55: quality 0.5V1057 Cyg 20:55–21:15: quality 0.4V1057 Cyg 21:15–21:20: quality 0.3M33M33 17:40–18:15: quality 0.2M33 18:15–18:30: quality 0.5M33 18:30–18:45: quality 0.4M33 18:45–21:05: quality 0.8M33 21:05–22:30: quality 0.7M33 22:30–00:00: quality 0.6M33 00:00–00:20: quality 0.5M33 00:20–00:45: quality 0.4M33 00:45–01:00: quality 0.3observe M33 21:05–22:30scheduleM31NGC 7000M33M45M4218:0020:0022:0000:0002:0004:0006:00

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
17:00–18:15 — nothing worth pointing at — 1.25
18:15–19:40 M31 1.42 0.69
19:40–21:05 NGC 7000 1.42 0.61
21:05–22:30 M33 1.42 0.71
22:30–23:55 M45 1.42 0.54
23:55–01:45 M42 1.83 0.35
01:45–02:20 M45 0.58 0.36
02:20–07:50 — nothing worth pointing at — 5.5

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 83 unknown 18:45–23:15 (good) 89.5° at 18:10 95.8° 1.42
M42 Great Orion Nebula 34 unknown 19:25–01:55 (marginal) 42.9° at 23:00 51.8° 1.83
M45 Seven Sisters 70 unknown 18:45–21:35 (good) 72.6° at 21:10 66.5° 2.0
NGC 7000 North America Nebula 39 unknown 18:45–20:30 (good) 87.2° at 14:25 114.6° 1.42
V1057 Cyg 39 unknown 18:45–20:30 (good) 87.2° at 14:25 114.6° 0.0
M33 Triangulum Pinwheel 82 unknown 18:45–23:15 (good) 79.2° at 19:00 92.2° 1.42

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2045-01-04"

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"}.