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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 Sunday, 17 January 2038 · astronomical night 18:55 → 06:06 (11.18 h) · Moon 88% (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 19:00–21:20: quality 0.5M31 21:20–23:15: quality 0.4M31 23:15–23:45: quality 0.3M31 23:45–00:00: quality 0.2observe M31 20:25–21:35M42M42 18:25–19:00: quality 0.1M42 19:00–19:05: quality 0.2M42 19:05–01:30: quality 0.3M42 01:30–02:00: quality 0.2observe M42 23:55–01:10M45M45 17:50–18:25: quality 0.1M45 18:25–19:00: quality 0.2M45 19:00–19:45: quality 0.4M45 19:45–01:35: quality 0.3M45 01:35–02:00: quality 0.2observe M45 22:45–23:55observe M45 01:10–01:15NGC 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 20:15–20:30: quality 0.3NGC 7000 06:40–07:15: quality 0.1observe NGC 7000 18:25–19:35V1057 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 20:15–20:30: quality 0.3V1057 Cyg 06:40–07:15: quality 0.1observe V1057 Cyg 19:35–20:25M33M33 17:50–18:25: quality 0.1M33 18:25–19:00: quality 0.2M33 19:00–20:10: quality 0.5M33 20:10–23:15: quality 0.4M33 23:15–23:50: quality 0.3M33 23:50–00:10: quality 0.2observe M33 21:35–22:45scheduleNGC 7000V1057 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
17:15–18:25 — nothing worth pointing at — 1.17
18:25–19:35 NGC 7000 1.17 0.45
19:35–20:25 V1057 Cyg 0.83 0.41
20:25–21:35 M31 1.17 0.47
21:35–22:45 M33 1.17 0.38
22:45–23:55 M45 1.17 0.32
23:55–01:10 M42 1.25 0.32
01:10–01:15 M45 0.08 0.31
01:15–07:45 — nothing worth pointing at — 6.5

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 32 unknown 19:00–23:30 (marginal) 89.5° at 17:15 59.2° 1.17
M42 Great Orion Nebula 17 unknown 23:20–01:10 (marginal) 42.9° at 22:10 26.4° 1.25
M45 Seven Sisters 22 unknown 19:00–01:15 (marginal) 72.5° at 20:20 19.2° 1.25
NGC 7000 North America Nebula 15 unknown 19:00–19:15 (good) 87.2° at 13:35 96.8° 1.17
V1057 Cyg 15 unknown 19:00–19:10 (good) 87.3° at 13:35 96.8° 0.83
M33 Triangulum Pinwheel 27 unknown 19:00–23:35 (marginal) 79.2° at 18:10 49.0° 1.17
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2038-01-17"

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"}.