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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, 10 January 2039 · astronomical night 18:48 → 06:08 (11.33 h) · Moon 100% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:45–18:20: quality 0.1M31 18:20–18:50: quality 0.4M31 18:50–21:05: quality 0.7M31 21:05–22:30: quality 0.6M31 22:30–23:35: quality 0.5M31 23:35–00:00: quality 0.4M31 00:00–00:25: quality 0.3M31 00:25–00:30: quality 0.2observe M31 20:50–22:05M42M42 18:50–19:00: quality 0.2M42 19:00–19:40: quality 0.3M42 19:40–21:35: quality 0.4M42 21:35–01:25: quality 0.3M42 01:25–02:20: quality 0.2M42 02:20–02:25: quality 0.1M45M45 17:45–18:20: quality 0.1M45 18:20–18:50: quality 0.3M45 18:50–20:00: quality 0.6M45 20:00–22:15: quality 0.5M45 22:15–00:35: quality 0.4M45 00:35–02:00: quality 0.3M45 02:00–02:25: quality 0.2observe M45 23:20–01:40NGC 7000NGC 7000 17:45–18:20: quality 0.1NGC 7000 18:20–18:50: quality 0.4NGC 7000 18:50–19:50: quality 0.7NGC 7000 19:50–20:10: quality 0.6NGC 7000 20:10–20:30: quality 0.5NGC 7000 20:30–20:50: quality 0.4NGC 7000 20:50–20:55: quality 0.3NGC 7000 07:10–07:20: quality 0.1observe NGC 7000 19:35–20:50V1057 CygV1057 Cyg 17:45–18:20: quality 0.1V1057 Cyg 18:20–18:50: quality 0.4V1057 Cyg 18:50–19:50: quality 0.7V1057 Cyg 19:50–20:10: quality 0.6V1057 Cyg 20:10–20:30: quality 0.5V1057 Cyg 20:30–20:50: quality 0.4V1057 Cyg 20:50–20:55: quality 0.3V1057 Cyg 07:10–07:20: quality 0.1observe V1057 Cyg 18:20–19:35M33M33 17:45–18:20: quality 0.1M33 18:20–18:50: quality 0.4M33 18:50–21:00: quality 0.7M33 21:00–22:25: quality 0.6M33 22:25–23:45: quality 0.5M33 23:45–00:10: quality 0.4M33 00:10–00:35: quality 0.3M33 00:35–00:40: quality 0.2observe M33 22:05–23:20scheduleV1057 CygNGC 7000M31M33M4518:0020:0022:0000:0002:0004:0006:00

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
17:05–18:20 — nothing worth pointing at — 1.25
18:20–19:35 V1057 Cyg 1.25 0.58
19:35–20:50 NGC 7000 1.25 0.54
20:50–22:05 M31 1.25 0.62
22:05–23:20 M33 1.25 0.53
23:20–01:40 M45 2.33 0.36
01:40–07:50 — nothing worth pointing at — 6.17

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 67 unknown 18:50–21:45 (good) 89.7° at 17:45 87.0° 1.25
M42 Great Orion Nebula 22 unknown 19:20–23:15 (marginal) 42.9° at 22:35 44.0° 0.0
M45 Seven Sisters 53 unknown 18:50–19:00 (good) 72.5° at 20:50 55.9° 2.33
NGC 7000 North America Nebula 28 unknown 18:50–20:00 (good) 87.2° at 14:00 110.8° 1.25
V1057 Cyg 28 unknown 18:50–20:00 (good) 87.3° at 14:00 110.9° 1.25
M33 Triangulum Pinwheel 65 unknown 18:50–21:40 (good) 79.2° at 18:35 82.2° 1.25

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2039-01-10"

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"}.