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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, 05 September 2028 · astronomical night 21:23 → 05:15 (7.86 h) · Moon 96% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 20:50–21:25: quality 0.2M31 21:25–01:20: quality 0.4M31 01:20–03:55: quality 0.3M31 03:55–05:20: quality 0.4M31 05:20–05:55: quality 0.2M31 05:55–06:25: quality 0.1observe M31 23:40–01:05M42M42 04:10–04:30: quality 0.3M42 04:30–04:55: quality 0.4M42 04:55–05:20: quality 0.5M42 05:20–05:55: quality 0.3M42 05:55–06:25: quality 0.1observe M42 04:20–05:20M45M45 00:35–00:50: quality 0.2M45 00:50–01:20: quality 0.3M45 01:20–03:45: quality 0.4M45 03:45–05:20: quality 0.5M45 05:20–05:55: quality 0.3M45 05:55–06:25: quality 0.1observe M45 02:30–04:20NGC 7000NGC 7000 20:20–20:50: quality 0.1NGC 7000 20:50–21:25: quality 0.3NGC 7000 21:25–23:05: quality 0.6NGC 7000 23:05–02:30: quality 0.5NGC 7000 02:30–05:20: quality 0.4NGC 7000 05:20–05:45: quality 0.2NGC 7000 05:45–05:55: quality 0.1observe NGC 7000 20:50–22:15V1057 CygV1057 Cyg 20:20–20:50: quality 0.1V1057 Cyg 20:50–21:25: quality 0.3V1057 Cyg 21:25–23:05: quality 0.6V1057 Cyg 23:05–02:30: quality 0.5V1057 Cyg 02:30–05:20: quality 0.4V1057 Cyg 05:20–05:45: quality 0.2V1057 Cyg 05:45–05:55: quality 0.1observe V1057 Cyg 22:15–23:40M33M33 22:00–22:20: quality 0.2M33 22:20–04:45: quality 0.3M33 04:45–05:20: quality 0.4M33 05:20–05:55: quality 0.2M33 05:55–06:25: quality 0.1observe M33 01:05–02:30scheduleNGC 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
19:45–20:50 — nothing worth pointing at — 1.08
20:50–22:15 NGC 7000 1.42 0.49
22:15–23:40 V1057 Cyg 1.42 0.55
23:40–01:05 M31 1.42 0.37
01:05–02:30 M33 1.42 0.31
02:30–04:20 M45 1.83 0.43
04:20–05:20 M42 1.0 0.43
05:20–06:55 — nothing worth pointing at — 1.58

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 35 unknown 21:25–05:20 (marginal) 89.5° at 03:05 35.6° 1.42
M42 Great Orion Nebula 9 unknown 04:20–05:20 (marginal) 42.9° at 07:55 81.9° 1.0
M45 Seven Sisters 27 unknown 01:05–05:20 (marginal) 72.5° at 06:05 54.6° 1.83
NGC 7000 North America Nebula 63 unknown 21:25–22:00 (good) 87.2° at 23:20 56.3° 1.42
V1057 Cyg 63 unknown 21:25–22:00 (good) 87.3° at 23:20 56.3° 1.42
M33 Triangulum Pinwheel 23 unknown 22:35–05:20 (marginal) 79.1° at 03:55 31.1° 1.42
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2028-09-05"

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"}.