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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, 18 January 2038 · astronomical night 18:56 → 06:06 (11.15 h) · Moon 94% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:50–18:25: quality 0.1M31 18:25–19:00: quality 0.3M31 19:00–20:05: quality 0.6M31 20:05–21:55: quality 0.5M31 21:55–23:10: quality 0.4M31 23:10–23:45: quality 0.3M31 23:45–23:55: quality 0.2observe M31 20:55–22:00M42M42 18:25–19:00: quality 0.1M42 19:00–19:05: quality 0.2M42 19:05–21:10: quality 0.3M42 21:10–00:35: quality 0.2M42 00:35–00:55: quality 0.3M42 00:55–01:55: quality 0.2M45M45 17:50–18:25: quality 0.1M45 18:25–19:00: quality 0.2M45 19:00–19:35: quality 0.4M45 19:35–01:10: quality 0.3M45 01:10–01:55: quality 0.2observe M45 20:25–20:55NGC 7000NGC 7000 17:50–18:25: quality 0.1NGC 7000 18:25–19:00: quality 0.3NGC 7000 19:00–19:30: quality 0.6NGC 7000 19:30–19:50: quality 0.5NGC 7000 19:50–20:15: quality 0.4NGC 7000 20:15–20:25: quality 0.3NGC 7000 06:35–06:40: quality 0.2NGC 7000 06:40–07:15: quality 0.1observe NGC 7000 19:30–20:25V1057 CygV1057 Cyg 17:50–18:25: quality 0.1V1057 Cyg 18:25–19:00: quality 0.3V1057 Cyg 19:00–19:30: quality 0.6V1057 Cyg 19:30–19:50: quality 0.5V1057 Cyg 19:50–20:15: quality 0.4V1057 Cyg 20:15–20:25: quality 0.3V1057 Cyg 06:35–06:40: quality 0.2V1057 Cyg 06:40–07:15: quality 0.1observe V1057 Cyg 18:25–19:30M33M33 17:50–18:25: quality 0.1M33 18:25–19:00: quality 0.3M33 19:00–21:10: quality 0.5M33 21:10–23:15: quality 0.4M33 23:15–23:50: quality 0.3M33 23:50–00:05: quality 0.2observe M33 22:00–23:30scheduleV1057 CygNGC 7000M31M3318:0020:0022:0000:0002:0004:0006:00

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
17:15–18:25 — nothing worth pointing at — 1.17
18:25–19:30 V1057 Cyg 1.08 0.46
19:30–20:25 NGC 7000 0.92 0.42
20:25–20:55 M45 0.5 0.31
20:55–22:00 M31 1.08 0.47
22:00–23:30 M33 1.5 0.38
23:30–07:45 — nothing worth pointing at — 8.25

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 36 unknown 19:00–23:25 (marginal) 89.6° at 17:15 68.7° 1.08
M42 Great Orion Nebula 12 unknown — 42.9° at 22:05 28.0° 0.0
M45 Seven Sisters 20 unknown 19:00–20:55 (marginal) 72.5° at 20:15 31.5° 0.5
NGC 7000 North America Nebula 16 unknown 19:00–19:20 (good) 87.2° at 13:30 102.7° 0.92
V1057 Cyg 16 unknown 19:00–19:20 (good) 87.3° at 13:30 102.8° 1.08
M33 Triangulum Pinwheel 32 unknown 19:00–23:30 (marginal) 79.2° at 18:05 60.2° 1.5

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2038-01-18"

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"}.