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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 Tuesday, 04 October 2039 · astronomical night 20:30 → 05:49 (9.32 h) · Moon 93% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:30–20:00: quality 0.1M31 20:00–20:25: quality 0.4M31 20:25–20:35: quality 0.3M31 20:35–21:00: quality 0.6M31 21:00–23:45: quality 0.5M31 23:45–04:50: quality 0.4M31 04:50–05:25: quality 0.3M31 05:25–05:50: quality 0.4M31 05:50–06:25: quality 0.2M31 06:25–06:55: quality 0.1observe M31 23:20–01:00M42M42 02:20–02:50: quality 0.2M42 02:50–04:20: quality 0.3M42 04:20–05:50: quality 0.4M42 05:50–06:25: quality 0.2M42 06:25–06:55: quality 0.1observe M42 04:20–05:50M45M45 22:40–23:05: quality 0.2M45 23:05–05:40: quality 0.3M45 05:40–05:50: quality 0.4M45 05:50–06:25: quality 0.2M45 06:25–06:55: quality 0.1observe M45 02:40–04:20NGC 7000NGC 7000 19:30–20:00: quality 0.2NGC 7000 20:00–20:25: quality 0.5NGC 7000 20:25–20:35: quality 0.4NGC 7000 20:35–21:20: quality 0.8NGC 7000 21:20–00:05: quality 0.7NGC 7000 00:05–01:45: quality 0.6NGC 7000 01:45–03:25: quality 0.5NGC 7000 03:25–03:50: quality 0.4NGC 7000 03:50–04:20: quality 0.3NGC 7000 04:20–04:25: quality 0.2observe NGC 7000 20:00–21:40V1057 CygV1057 Cyg 19:30–20:00: quality 0.2V1057 Cyg 20:00–20:25: quality 0.5V1057 Cyg 20:25–20:35: quality 0.4V1057 Cyg 20:35–21:20: quality 0.8V1057 Cyg 21:20–00:05: quality 0.7V1057 Cyg 00:05–01:45: quality 0.6V1057 Cyg 01:45–03:25: quality 0.5V1057 Cyg 03:25–03:50: quality 0.4V1057 Cyg 03:50–04:20: quality 0.3V1057 Cyg 04:20–04:25: quality 0.2observe V1057 Cyg 21:40–23:20M33M33 20:05–20:20: quality 0.2M33 20:20–20:25: quality 0.3M33 20:25–20:35: quality 0.2M33 20:35–21:00: quality 0.4M33 21:00–21:55: quality 0.5M33 21:55–00:55: quality 0.4M33 00:55–05:50: quality 0.3M33 05:50–06:25: quality 0.2M33 06:50–06:55: quality 0.1observe M33 01:00–02:40scheduleNGC 7000V1057 CygM31M33M45M4220:0022:0000:0002:0004:0006:00

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
18:55–20:00 — nothing worth pointing at — 1.08
20:00–21:40 NGC 7000 1.67 0.66
21:40–23:20 V1057 Cyg 1.67 0.7
23:20–01:00 M31 1.67 0.43
01:00–02:40 M33 1.67 0.32
02:40–04:20 M45 1.67 0.3
04:20–05:50 M42 1.5 0.38
05:50–07:25 — nothing worth pointing at — 1.58

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 55 unknown 20:35–05:50 (marginal) 89.6° at 01:10 38.5° 1.67
M42 Great Orion Nebula 13 unknown 03:10–05:50 (marginal) 42.9° at 06:05 46.8° 1.5
M45 Seven Sisters 21 unknown 23:25–05:50 (marginal) 72.5° at 04:15 19.1° 1.67
NGC 7000 North America Nebula 78 unknown 20:35–00:55 (good) 87.2° at 21:30 78.1° 1.67
V1057 Cyg 78 unknown 20:35–00:55 (good) 87.3° at 21:30 78.0° 1.67
M33 Triangulum Pinwheel 42 unknown 20:35–05:50 (marginal) 79.2° at 02:05 23.7° 1.67
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2039-10-04"

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"}.