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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 Thursday, 27 October 2039 · astronomical night 19:55 → 06:14 (10.31 h) · Moon 84% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:55–19:25: quality 0.1M31 19:25–20:00: quality 0.3M31 20:00–01:50: quality 0.6M31 01:50–03:45: quality 0.7M31 03:45–04:35: quality 0.9M31 04:35–05:25: quality 0.8M31 05:25–05:45: quality 0.7M31 05:45–06:00: quality 0.6M31 06:00–06:15: quality 0.5M31 06:15–06:25: quality 0.2observe M31 01:10–03:05M42M42 00:50–00:55: quality 0.3M42 00:55–01:15: quality 0.4M42 01:15–01:35: quality 0.5M42 01:35–02:00: quality 0.6M42 02:00–03:45: quality 0.7M42 03:45–06:15: quality 0.9M42 06:15–06:50: quality 0.4M42 06:50–07:20: quality 0.1observe M42 03:05–05:00M45M45 21:10–21:30: quality 0.3M45 21:30–21:50: quality 0.4M45 21:50–22:25: quality 0.5M45 22:25–00:10: quality 0.6M45 00:10–02:35: quality 0.7M45 02:35–03:45: quality 0.8M45 03:45–05:30: quality 1.0M45 05:30–06:15: quality 0.9M45 06:15–06:50: quality 0.4M45 06:50–07:20: quality 0.1observe M45 23:15–01:10observe M45 06:15–06:50NGC 7000NGC 7000 18:55–19:25: quality 0.1NGC 7000 19:25–20:00: quality 0.3NGC 7000 20:00–01:30: quality 0.6NGC 7000 01:30–02:10: quality 0.5NGC 7000 02:10–02:35: quality 0.4NGC 7000 02:35–02:55: quality 0.3observe NGC 7000 19:25–21:20V1057 CygV1057 Cyg 18:55–19:25: quality 0.1V1057 Cyg 19:25–20:00: quality 0.3V1057 Cyg 20:00–01:25: quality 0.6V1057 Cyg 01:25–02:10: quality 0.5V1057 Cyg 02:10–02:35: quality 0.4V1057 Cyg 02:35–02:55: quality 0.3observe V1057 Cyg 21:20–23:15M33M33 18:55–19:25: quality 0.1M33 19:25–20:00: quality 0.2M33 20:00–21:55: quality 0.5M33 21:55–02:05: quality 0.6M33 02:05–03:45: quality 0.7M33 03:45–04:55: quality 0.9M33 04:55–05:45: quality 0.8M33 05:45–06:00: quality 0.7M33 06:00–06:10: quality 0.6M33 06:10–06:15: quality 0.5M33 06:15–06:20: quality 0.3M33 06:20–06:35: quality 0.2observe M33 05:00–06:15scheduleNGC 7000V1057 CygM45M31M42M3320:0022:0000:0002:0004:0006:00

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
18:20–19:25 — nothing worth pointing at — 1.08
19:25–21:20 NGC 7000 1.92 0.54
21:20–23:15 V1057 Cyg 1.92 0.62
23:15–01:10 M45 1.92 0.65
01:10–03:05 M31 1.92 0.66
03:05–05:00 M42 1.92 0.83
05:00–06:15 M33 1.25 0.74
06:15–06:50 M45 0.58 0.44
06:50–07:50 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 90 unknown 00:10–05:50 (good) 89.6° at 23:40 54.4° 1.92
M42 Great Orion Nebula 89 unknown 01:45–06:15 (good) 42.9° at 04:35 92.5° 1.92
M45 Seven Sisters 100 unknown 23:20–06:15 (good) 72.5° at 02:45 73.0° 2.5
NGC 7000 North America Nebula 65 unknown 20:00–23:20 (good) 87.2° at 20:00 63.0° 1.92
V1057 Cyg 65 unknown 20:00–23:20 (good) 87.2° at 20:00 62.9° 1.92
M33 Triangulum Pinwheel 93 unknown 00:40–06:05 (good) 79.2° at 00:35 51.5° 1.25
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2039-10-27"

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"}.