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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 Sunday, 03 September 2028 · astronomical night 21:27 → 05:12 (7.75 h) · Moon 100% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 20:55–21:30: quality 0.2M31 21:30–23:45: quality 0.4M31 23:45–04:50: quality 0.5M31 04:50–05:15: quality 0.6M31 05:15–05:50: quality 0.3M31 05:50–06:25: quality 0.1observe M31 00:20–01:45M42M42 04:15–04:25: quality 0.3M42 04:25–04:45: quality 0.4M42 04:45–05:00: quality 0.5M42 05:00–05:15: quality 0.6M42 05:15–05:50: quality 0.3M42 05:50–06:25: quality 0.1observe M42 04:35–05:50M45M45 00:40–01:05: quality 0.3M45 01:05–01:25: quality 0.4M45 01:25–02:40: quality 0.5M45 02:40–04:10: quality 0.6M45 04:10–05:15: quality 0.7M45 05:15–05:25: quality 0.3M45 05:25–05:50: quality 0.4M45 05:50–06:25: quality 0.1observe M45 01:45–03:10NGC 7000NGC 7000 20:20–20:55: quality 0.1NGC 7000 20:55–21:30: quality 0.3NGC 7000 21:30–21:55: quality 0.6NGC 7000 21:55–05:15: quality 0.5NGC 7000 05:15–05:50: quality 0.2NGC 7000 05:50–05:55: quality 0.1observe NGC 7000 21:30–22:55V1057 CygV1057 Cyg 20:20–20:55: quality 0.1V1057 Cyg 20:55–21:30: quality 0.3V1057 Cyg 21:30–21:55: quality 0.6V1057 Cyg 21:55–05:15: quality 0.5V1057 Cyg 05:15–05:50: quality 0.2V1057 Cyg 05:50–05:55: quality 0.1observe V1057 Cyg 22:55–00:20M33M33 22:05–22:15: quality 0.2M33 22:15–22:45: quality 0.3M33 22:45–01:25: quality 0.4M33 01:25–04:45: quality 0.5M33 04:45–05:15: quality 0.6M33 05:15–05:50: quality 0.3M33 05:50–06:25: quality 0.1observe M33 03:10–04:35scheduleNGC 7000V1057 CygM31M45M33M4220:0022:0000:0002:0004:0006:00

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
19:50–21:30 — nothing worth pointing at — 1.67
21:30–22:55 NGC 7000 1.42 0.54
22:55–00:20 V1057 Cyg 1.42 0.49
00:20–01:45 M31 1.42 0.46
01:45–03:10 M45 1.42 0.54
03:10–04:35 M33 1.42 0.51
04:35–05:50 M42 1.25 0.43
05:50–06:55 — nothing worth pointing at — 1.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 57 unknown 21:30–05:15 (marginal) 89.7° at 03:10 52.4° 1.42
M42 Great Orion Nebula 11 unknown 05:10–05:15 (good) 42.9° at 08:00 102.1° 1.25
M45 Seven Sisters 48 unknown 03:25–05:15 (good) 72.5° at 06:15 78.3° 1.42
NGC 7000 North America Nebula 57 unknown 21:30–05:15 (marginal) 87.2° at 23:25 53.7° 1.42
V1057 Cyg 57 unknown 21:30–05:15 (marginal) 87.3° at 23:25 53.6° 1.42
M33 Triangulum Pinwheel 49 unknown 22:30–05:15 (marginal) 79.1° at 04:00 53.0° 1.42
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2028-09-03"

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"}.