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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, 12 January 2039 · astronomical night 18:50 → 06:07 (11.29 h) · Moon 94% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:45–18:20: quality 0.2M31 18:20–18:55: quality 0.5M31 18:55–19:20: quality 1.0M31 19:20–20:30: quality 0.9M31 20:30–21:45: quality 0.8M31 21:45–23:10: quality 0.7M31 23:10–23:35: quality 0.6M31 23:35–23:50: quality 0.5M31 23:50–00:15: quality 0.4M31 00:15–00:20: quality 0.3observe M31 18:20–19:40M42M42 18:45–18:55: quality 0.2M42 18:55–19:05: quality 0.5M42 19:05–19:20: quality 0.6M42 19:20–19:40: quality 0.5M42 19:40–21:55: quality 0.6M42 21:55–00:25: quality 0.5M42 00:25–01:35: quality 0.4M42 01:35–02:05: quality 0.3M42 02:05–02:20: quality 0.2observe M42 23:20–01:30M45M45 17:45–18:20: quality 0.1M45 18:20–18:55: quality 0.5M45 18:55–19:20: quality 1.0M45 19:20–20:40: quality 0.8M45 20:40–23:05: quality 0.7M45 23:05–00:30: quality 0.6M45 00:30–01:35: quality 0.5M45 01:35–01:55: quality 0.4M45 01:55–02:20: quality 0.3observe M45 22:00–23:20observe M45 01:30–02:05NGC 7000NGC 7000 17:45–18:20: quality 0.1NGC 7000 18:20–18:55: quality 0.4NGC 7000 18:55–19:20: quality 0.8NGC 7000 19:20–19:55: quality 0.7NGC 7000 19:55–20:10: quality 0.6NGC 7000 20:10–20:30: quality 0.5NGC 7000 20:30–20:50: quality 0.4NGC 7000 07:00–07:20: quality 0.1observe NGC 7000 19:40–20:40V1057 CygV1057 Cyg 17:45–18:20: quality 0.1V1057 Cyg 18:20–18:55: quality 0.4V1057 Cyg 18:55–19:20: quality 0.8V1057 Cyg 19:20–19:55: quality 0.7V1057 Cyg 19:55–20:10: quality 0.6V1057 Cyg 20:10–20:30: quality 0.5V1057 Cyg 20:30–20:50: quality 0.4V1057 Cyg 07:00–07:20: quality 0.1M33M33 17:45–18:20: quality 0.2M33 18:20–18:55: quality 0.5M33 18:55–19:20: quality 1.0M33 19:20–20:35: quality 0.9M33 20:35–22:00: quality 0.8M33 22:00–23:20: quality 0.7M33 23:20–23:50: quality 0.6M33 23:50–00:05: quality 0.5M33 00:05–00:25: quality 0.4M33 00:25–00:30: quality 0.3observe M33 20:40–22:00scheduleM31NGC 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
17:10–18:20 — nothing worth pointing at — 1.17
18:20–19:40 M31 1.33 0.75
19:40–20:40 NGC 7000 1.0 0.56
20:40–22:00 M33 1.33 0.8
22:00–23:20 M45 1.33 0.67
23:20–01:30 M42 2.17 0.45
01:30–02:05 M45 0.58 0.39
02:05–07:50 — nothing worth pointing at — 5.75

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 18:55–23:25 (good) 89.6° at 17:40 107.2° 1.33
M42 Great Orion Nebula 56 unknown 19:15–19:20 (good) 42.9° at 22:30 65.0° 2.17
M45 Seven Sisters 100 unknown 18:55–23:45 (good) 72.5° at 20:40 81.5° 1.92
NGC 7000 North America Nebula 33 unknown 18:55–20:05 (good) 87.2° at 13:55 116.8° 1.0
V1057 Cyg 33 unknown 18:55–20:05 (good) 87.3° at 13:55 116.9° 0.0
M33 Triangulum Pinwheel 100 unknown 18:55–23:40 (good) 79.2° at 18:30 105.8° 1.33

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2039-01-12"

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"}.