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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 Saturday, 20 October 2040 · astronomical night 20:04 → 06:07 (10.06 h) · Moon 99% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:00–19:35: quality 0.1M31 19:35–19:45: quality 0.3M31 19:45–20:05: quality 0.2M31 20:05–21:30: quality 0.5M31 21:30–23:20: quality 0.4M31 23:20–06:10: quality 0.3M31 06:10–06:40: quality 0.1observe M31 23:15–01:05M42M42 01:15–01:50: quality 0.2M42 01:50–03:15: quality 0.3M42 03:15–05:50: quality 0.4M42 05:50–06:10: quality 0.5M42 06:10–06:40: quality 0.2M42 06:40–07:15: quality 0.1observe M42 02:10–04:00M45M45 21:35–22:15: quality 0.2M45 22:15–05:00: quality 0.3M45 05:00–06:10: quality 0.4M45 06:10–06:40: quality 0.2M45 06:40–07:15: quality 0.1observe M45 04:00–05:50NGC 7000NGC 7000 19:00–19:35: quality 0.1NGC 7000 19:35–20:05: quality 0.4NGC 7000 20:05–21:30: quality 0.7NGC 7000 21:30–23:45: quality 0.6NGC 7000 23:45–01:55: quality 0.5NGC 7000 01:55–02:35: quality 0.4NGC 7000 02:35–03:10: quality 0.3NGC 7000 03:10–03:15: quality 0.2observe NGC 7000 19:35–21:25observe NGC 7000 01:05–02:10V1057 CygV1057 Cyg 19:00–19:35: quality 0.1V1057 Cyg 19:35–20:05: quality 0.4V1057 Cyg 20:05–21:30: quality 0.7V1057 Cyg 21:30–23:45: quality 0.6V1057 Cyg 23:45–01:55: quality 0.5V1057 Cyg 01:55–02:35: quality 0.4V1057 Cyg 02:35–03:10: quality 0.3V1057 Cyg 03:10–03:15: quality 0.2observe V1057 Cyg 21:25–23:15M33M33 19:30–19:35: quality 0.1M33 19:35–20:05: quality 0.2M33 20:05–22:35: quality 0.4M33 22:35–06:10: quality 0.3M33 06:10–06:15: quality 0.2M33 06:15–06:40: quality 0.1observe M33 05:50–06:10scheduleNGC 7000V1057 CygM31NGC 7000M42M4520:0022:0000:0002:0004:0006:00

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
18:30–19:35 — nothing worth pointing at — 1.08
19:35–21:25 NGC 7000 1.83 0.59
21:25–23:15 V1057 Cyg 1.83 0.62
23:15–01:05 M31 1.83 0.32
01:05–02:10 NGC 7000 1.08 0.46
02:10–04:00 M42 1.83 0.35
04:00–05:50 M45 1.83 0.34
05:50–06:10 M33 0.33 0.32
06:10–07:45 — nothing worth pointing at — 1.58

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 46 unknown 20:05–01:10 (marginal) 89.7° at 00:05 36.0° 1.83
M42 Great Orion Nebula 22 unknown 02:10–06:10 (marginal) 42.9° at 05:00 51.4° 1.83
M45 Seven Sisters 25 unknown 04:00–06:10 (marginal) 72.5° at 03:10 23.3° 1.83
NGC 7000 North America Nebula 71 unknown 20:05–22:50 (good) 87.2° at 20:20 74.7° 2.92
V1057 Cyg 71 unknown 20:05–22:50 (good) 87.2° at 20:20 74.7° 1.83
M33 Triangulum Pinwheel 35 unknown 20:05–23:40 (marginal) 79.2° at 00:55 21.3° 0.33
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2040-10-20"

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"}.