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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, 01 September 2034 · astronomical night 21:32 → 05:09 (7.61 h) · Moon 87% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 20:45–21:00: quality 0.1M31 21:00–21:35: quality 0.3M31 21:35–21:40: quality 0.7M31 21:40–01:45: quality 0.5M31 01:45–05:10: quality 0.4M31 05:10–05:50: quality 0.2M31 05:50–06:20: quality 0.1observe M31 23:50–01:15M42M42 04:25–04:35: quality 0.2M42 04:35–05:00: quality 0.3M42 05:00–05:10: quality 0.4M42 05:10–05:50: quality 0.2M42 05:50–06:20: quality 0.1observe M42 04:50–05:10M45M45 00:50–01:05: quality 0.2M45 01:05–01:40: quality 0.3M45 01:40–05:10: quality 0.4M45 05:10–05:50: quality 0.2M45 05:50–06:20: quality 0.1observe M45 02:40–04:05NGC 7000NGC 7000 20:25–20:55: quality 0.1NGC 7000 20:55–21:00: quality 0.2NGC 7000 21:00–21:35: quality 0.5NGC 7000 21:35–21:40: quality 1.0NGC 7000 21:40–22:15: quality 0.8NGC 7000 22:15–00:45: quality 0.7NGC 7000 00:45–03:25: quality 0.6NGC 7000 03:25–05:10: quality 0.5NGC 7000 05:10–05:50: quality 0.2NGC 7000 05:50–06:05: quality 0.1observe NGC 7000 21:00–22:25observe NGC 7000 04:05–04:50V1057 CygV1057 Cyg 20:25–20:55: quality 0.1V1057 Cyg 20:55–21:00: quality 0.2V1057 Cyg 21:00–21:35: quality 0.5V1057 Cyg 21:35–21:40: quality 1.0V1057 Cyg 21:40–22:15: quality 0.8V1057 Cyg 22:15–00:45: quality 0.7V1057 Cyg 00:45–03:25: quality 0.6V1057 Cyg 03:25–05:10: quality 0.5V1057 Cyg 05:10–05:50: quality 0.2V1057 Cyg 05:50–06:05: quality 0.1observe V1057 Cyg 22:25–23:50M33M33 22:15–22:45: quality 0.3M33 22:45–05:10: quality 0.4M33 05:10–05:50: quality 0.2M33 05:50–06:20: quality 0.1observe M33 01:15–02:40scheduleNGC 7000V1057 CygM31M33M45NGC 700020:0022:0000:0002:0004:0006:00

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
19:50–21:00 — nothing worth pointing at — 1.17
21:00–22:25 NGC 7000 1.42 0.67
22:25–23:50 V1057 Cyg 1.42 0.71
23:50–01:15 M31 1.42 0.5
01:15–02:40 M33 1.42 0.41
02:40–04:05 M45 1.42 0.39
04:05–04:50 NGC 7000 0.75 0.51
04:50–05:10 M42 0.33 0.34
05:10–06:50 — nothing worth pointing at — 1.67

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 71 unknown 21:35–21:40 (good) 89.7° at 03:20 36.2° 1.42
M42 Great Orion Nebula 4 unknown 04:50–05:10 (marginal) 42.9° at 08:10 63.4° 0.33
M45 Seven Sisters 19 unknown 01:20–05:10 (marginal) 72.5° at 06:25 38.2° 1.42
NGC 7000 North America Nebula 100 unknown 21:35–02:30 (good) 87.2° at 23:35 69.0° 2.17
V1057 Cyg 100 unknown 21:35–02:30 (good) 87.3° at 23:35 69.0° 1.42
M33 Triangulum Pinwheel 32 unknown 22:30–05:10 (marginal) 79.1° at 04:10 24.4° 1.42
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2034-09-01"

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"}.