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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 Friday, 18 October 2030 · astronomical night 20:07 → 06:04 (9.95 h) · Moon 57% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:05–19:40: quality 0.1M31 19:40–20:10: quality 0.4M31 20:10–20:55: quality 0.9M31 20:55–23:40: quality 1.0M31 23:40–01:10: quality 0.9M31 01:10–03:50: quality 0.8M31 03:50–05:20: quality 0.7M31 05:20–06:05: quality 0.6M31 06:05–06:15: quality 0.3M31 06:15–06:40: quality 0.2M31 06:40–06:50: quality 0.1observe M31 23:20–01:10M42M42 01:20–01:35: quality 0.3M42 01:35–02:00: quality 0.4M42 02:00–06:05: quality 0.5M42 06:05–06:40: quality 0.3M42 06:40–07:10: quality 0.1observe M42 04:50–06:05M45M45 21:45–21:55: quality 0.4M45 21:55–22:05: quality 0.5M45 22:05–22:20: quality 0.6M45 22:20–22:35: quality 0.7M45 22:35–23:20: quality 0.8M45 23:20–23:40: quality 0.9M45 23:40–01:15: quality 0.7M45 01:15–01:30: quality 0.8M45 01:30–05:15: quality 0.7M45 05:15–06:05: quality 0.6M45 06:05–06:40: quality 0.3M45 06:40–07:10: quality 0.1observe M45 03:00–04:50observe M45 06:05–06:10NGC 7000NGC 7000 19:05–19:40: quality 0.2NGC 7000 19:40–20:10: quality 0.5NGC 7000 20:10–23:40: quality 1.0NGC 7000 23:40–00:35: quality 0.9NGC 7000 00:35–02:00: quality 0.8NGC 7000 02:00–02:35: quality 0.7NGC 7000 02:35–02:50: quality 0.6NGC 7000 02:50–03:10: quality 0.5NGC 7000 03:10–03:25: quality 0.4observe NGC 7000 19:40–21:30V1057 CygV1057 Cyg 19:05–19:40: quality 0.2V1057 Cyg 19:40–20:10: quality 0.5V1057 Cyg 20:10–23:40: quality 1.0V1057 Cyg 23:40–00:35: quality 0.9V1057 Cyg 00:35–02:00: quality 0.8V1057 Cyg 02:00–02:35: quality 0.7V1057 Cyg 02:35–02:50: quality 0.6V1057 Cyg 02:50–03:10: quality 0.5V1057 Cyg 03:10–03:25: quality 0.4observe V1057 Cyg 21:30–23:20M33M33 19:10–19:40: quality 0.1M33 19:40–19:55: quality 0.3M33 19:55–20:10: quality 0.4M33 20:10–20:50: quality 0.8M33 20:50–22:10: quality 0.9M33 22:10–23:40: quality 1.0M33 23:40–00:25: quality 0.9M33 00:25–03:55: quality 0.8M33 03:55–05:20: quality 0.7M33 05:20–06:05: quality 0.6M33 06:05–06:30: quality 0.3M33 06:30–06:40: quality 0.2M33 06:40–07:00: quality 0.1observe M33 01:10–03:00scheduleNGC 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
18:35–19:40 — nothing worth pointing at — 1.08
19:40–21:30 NGC 7000 1.83 0.86
21:30–23:20 V1057 Cyg 1.83 1.0
23:20–01:10 M31 1.83 0.89
01:10–03:00 M33 1.83 0.81
03:00–04:50 M45 1.83 0.68
04:50–06:05 M42 1.25 0.53
06:05–06:10 M45 0.08 0.3
06:10–07:40 — nothing worth pointing at — 1.5

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 20:10–05:55 (good) 89.7° at 00:15 83.5° 1.83
M42 Great Orion Nebula 36 unknown 01:25–06:05 (marginal) 42.9° at 05:05 34.7° 1.25
M45 Seven Sisters 87 unknown 22:15–06:05 (good) 72.5° at 03:20 48.6° 1.92
NGC 7000 North America Nebula 100 unknown 20:10–02:40 (good) 87.2° at 20:30 112.5° 1.83
V1057 Cyg 100 unknown 20:10–02:40 (good) 87.3° at 20:30 112.5° 1.83
M33 Triangulum Pinwheel 100 unknown 20:10–06:05 (good) 79.1° at 01:05 76.7° 1.83
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2030-10-18"

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"}.