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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, 17 October 2030 · astronomical night 20:09 → 06:03 (9.91 h) · Moon 66% (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 20:10–21:00: quality 0.9M31 21:00–22:45: quality 1.0M31 22:45–01:50: quality 0.8M31 01:50–04:05: quality 0.7M31 04:05–05:55: quality 0.6M31 05:55–06:05: quality 0.5M31 06:05–06:10: quality 0.3M31 06:10–06:40: quality 0.2M31 06:40–06:45: quality 0.1observe M31 23:10–00:55M42M42 01:25–01:30: quality 0.2M42 01:30–01:55: quality 0.3M42 01:55–02:30: quality 0.4M42 02:30–04:00: quality 0.5M42 04:00–06:05: quality 0.4M42 06:05–06:40: quality 0.2M42 06:40–07:10: quality 0.1observe M42 04:25–06:05M45M45 21:50–21:55: quality 0.4M45 21:55–22:10: quality 0.5M45 22:10–22:25: quality 0.6M45 22:25–22:40: quality 0.7M45 22:40–22:45: quality 0.8M45 22:45–03:55: quality 0.6M45 03:55–06:05: quality 0.5M45 06:05–06:40: quality 0.2M45 06:40–07:10: quality 0.1observe M45 02:40–04:25NGC 7000NGC 7000 19:05–19:40: quality 0.2NGC 7000 19:40–20:10: quality 0.5NGC 7000 20:10–22:45: quality 1.0NGC 7000 22:45–00:05: quality 0.9NGC 7000 00:05–01:30: quality 0.8NGC 7000 01:30–02:30: quality 0.7NGC 7000 02:30–02:50: quality 0.6NGC 7000 02:50–03:10: quality 0.5NGC 7000 03:10–03:30: quality 0.4observe NGC 7000 19:40–21:25V1057 CygV1057 Cyg 19:05–19:40: quality 0.2V1057 Cyg 19:40–20:10: quality 0.5V1057 Cyg 20:10–22:45: quality 1.0V1057 Cyg 22:45–00:05: quality 0.9V1057 Cyg 00:05–01:30: quality 0.8V1057 Cyg 01:30–02:30: quality 0.7V1057 Cyg 02:30–02:50: quality 0.6V1057 Cyg 02:50–03:10: quality 0.5V1057 Cyg 03:10–03:30: quality 0.4observe V1057 Cyg 21:25–23:10M33M33 19:15–19:40: quality 0.1M33 19:40–20:00: quality 0.3M33 20:00–20:10: quality 0.4M33 20:10–20:55: quality 0.8M33 20:55–22:15: quality 0.9M33 22:15–22:45: quality 1.0M33 22:45–00:55: quality 0.8M33 00:55–04:00: quality 0.7M33 04:00–05:40: quality 0.6M33 05:40–06:05: quality 0.5M33 06:05–06:20: quality 0.3M33 06:20–06:40: quality 0.2M33 06:40–06:55: quality 0.1observe M33 00:55–02:40scheduleNGC 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
18:35–19:40 — nothing worth pointing at — 1.08
19:40–21:25 NGC 7000 1.75 0.86
21:25–23:10 V1057 Cyg 1.75 0.98
23:10–00:55 M31 1.75 0.8
00:55–02:40 M33 1.75 0.72
02:40–04:25 M45 1.75 0.56
04:25–06:05 M42 1.67 0.44
06:05–07:40 — nothing worth pointing at — 1.58

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 20:10–04:55 (good) 89.7° at 00:20 73.3° 1.75
M42 Great Orion Nebula 24 unknown 01:40–06:05 (marginal) 42.9° at 05:10 29.0° 1.67
M45 Seven Sisters 79 unknown 22:15–02:20 (good) 72.5° at 03:25 36.8° 1.75
NGC 7000 North America Nebula 100 unknown 20:10–02:40 (good) 87.2° at 20:35 106.0° 1.75
V1057 Cyg 100 unknown 20:10–02:40 (good) 87.3° at 20:35 106.0° 1.75
M33 Triangulum Pinwheel 99 unknown 20:10–04:45 (good) 79.1° at 01:10 65.3° 1.75
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2030-10-17"

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"}.