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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, 20 August 2030 · astronomical night 21:56 → 04:52 (6.93 h) · Moon 51% (last quarter) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 21:30–21:50: quality 0.2M31 21:50–22:00: quality 0.3M31 22:00–22:10: quality 0.6M31 22:10–22:30: quality 0.7M31 22:30–23:20: quality 0.8M31 23:20–23:45: quality 0.9M31 23:45–01:00: quality 0.7M31 01:00–01:50: quality 0.8M31 01:50–04:55: quality 0.7M31 04:55–05:35: quality 0.3M31 05:35–06:10: quality 0.1observe M31 00:40–02:20M42M42 05:15–05:25: quality 0.1M42 05:25–05:35: quality 0.2M42 05:35–06:10: quality 0.1M45M45 01:40–01:50: quality 0.3M45 01:50–02:10: quality 0.4M45 02:10–02:30: quality 0.5M45 02:30–04:55: quality 0.6M45 04:55–05:35: quality 0.3M45 05:35–06:10: quality 0.1observe M45 04:00–05:35NGC 7000NGC 7000 20:45–21:20: quality 0.1NGC 7000 21:20–22:00: quality 0.5NGC 7000 22:00–23:45: quality 1.0NGC 7000 23:45–01:50: quality 0.9NGC 7000 01:50–04:15: quality 0.8NGC 7000 04:15–04:55: quality 0.7NGC 7000 04:55–05:00: quality 0.4NGC 7000 05:00–05:35: quality 0.3NGC 7000 05:35–06:10: quality 0.1observe NGC 7000 21:20–23:00V1057 CygV1057 Cyg 20:45–21:20: quality 0.1V1057 Cyg 21:20–22:00: quality 0.5V1057 Cyg 22:00–23:45: quality 1.0V1057 Cyg 23:45–01:50: quality 0.9V1057 Cyg 01:50–04:15: quality 0.8V1057 Cyg 04:15–04:55: quality 0.7V1057 Cyg 04:55–05:00: quality 0.4V1057 Cyg 05:00–05:35: quality 0.3V1057 Cyg 05:35–06:10: quality 0.1observe V1057 Cyg 23:00–00:40M33M33 23:05–23:10: quality 0.4M33 23:10–23:25: quality 0.5M33 23:25–23:40: quality 0.6M33 23:40–23:45: quality 0.7M33 23:45–00:45: quality 0.6M33 00:45–04:00: quality 0.7M33 04:00–04:55: quality 0.6M33 04:55–05:35: quality 0.3M33 05:35–06:10: quality 0.1observe M33 02:20–04:00scheduleNGC 7000V1057 CygM31M33M4522:0000:0002:0004:0006:00

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
20:10–21:20 — nothing worth pointing at — 1.17
21:20–23:00 NGC 7000 1.67 0.8
23:00–00:40 V1057 Cyg 1.67 0.93
00:40–02:20 M31 1.67 0.75
02:20–04:00 M33 1.67 0.67
04:00–05:35 M45 1.58 0.48
05:35–06:40 — nothing worth pointing at — 1.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 87 unknown 22:05–04:55 (good) 89.5° at 04:10 41.8° 1.67
M42 Great Orion Nebula 0 unknown — 42.9° at 09:00 39.3° 0.0
M45 Seven Sisters 31 unknown 04:20–04:55 (good) 72.5° at 07:10 4.1° 1.58
NGC 7000 North America Nebula 100 unknown 22:00–04:55 (good) 87.2° at 00:25 81.9° 1.67
V1057 Cyg 100 unknown 22:00–04:55 (good) 87.3° at 00:25 81.9° 1.67
M33 Triangulum Pinwheel 69 unknown 23:55–04:55 (good) 79.1° at 05:00 29.1° 1.67

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2030-08-20"

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"}.