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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, 28 August 2026 · astronomical night 21:40 → 05:04 (7.39 h) · Moon 99% (full moon) · weather: ERA5 history

M31M31 21:05–21:15: quality 0.1M31 21:15–21:45: quality 0.2M31 21:45–00:20: quality 0.4M31 00:20–01:50: quality 0.5M31 01:50–02:50: quality 0.4M31 02:50–03:00: quality 0.5M31 03:00–03:40: quality 0.4M31 03:40–04:00: quality 0.5M31 04:00–04:20: quality 0.3M31 04:20–05:00: quality 0.4M31 05:00–05:05: quality 0.5M31 05:05–05:40: quality 0.2M31 05:40–05:45: quality 0.3M31 05:45–06:15: quality 0.1observe M31 00:05–01:30M42M42 04:45–04:55: quality 0.2M42 04:55–05:00: quality 0.3M42 05:00–05:05: quality 0.4M42 05:05–05:30: quality 0.2M42 05:30–05:45: quality 0.3M42 05:45–06:15: quality 0.1observe M42 05:00–05:05M45M45 01:05–01:10: quality 0.2M45 01:10–01:35: quality 0.3M45 01:35–01:55: quality 0.4M45 01:55–04:00: quality 0.5M45 04:00–04:50: quality 0.4M45 04:50–05:00: quality 0.5M45 05:00–05:05: quality 0.6M45 05:05–05:45: quality 0.3M45 05:45–06:15: quality 0.1observe M45 02:55–05:00observe M45 05:30–05:45NGC 7000NGC 7000 20:30–21:05: quality 0.1NGC 7000 21:05–21:45: quality 0.3NGC 7000 21:45–22:00: quality 0.6NGC 7000 22:00–03:05: quality 0.5NGC 7000 03:05–04:00: quality 0.4NGC 7000 04:00–05:00: quality 0.3NGC 7000 05:00–05:05: quality 0.4NGC 7000 05:05–05:45: quality 0.2NGC 7000 05:45–06:15: quality 0.1observe NGC 7000 21:05–21:35observe NGC 7000 21:45–22:40V1057 CygV1057 Cyg 20:30–21:05: quality 0.1V1057 Cyg 21:05–21:45: quality 0.3V1057 Cyg 21:45–22:00: quality 0.6V1057 Cyg 22:00–03:00: quality 0.5V1057 Cyg 03:00–04:00: quality 0.4V1057 Cyg 04:00–05:00: quality 0.3V1057 Cyg 05:00–05:05: quality 0.4V1057 Cyg 05:05–05:45: quality 0.2V1057 Cyg 05:45–06:15: quality 0.1observe V1057 Cyg 22:40–00:05M33M33 22:30–22:50: quality 0.2M33 22:50–23:15: quality 0.3M33 23:15–03:50: quality 0.4M33 03:50–04:00: quality 0.5M33 04:00–04:25: quality 0.3M33 04:25–05:00: quality 0.4M33 05:00–05:05: quality 0.5M33 05:05–05:40: quality 0.2M33 05:40–05:45: quality 0.3M33 05:45–06:15: quality 0.1observe M33 01:30–02:55scheduleNGC 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
20:00–21:05 — nothing worth pointing at — 1.08
21:05–21:35 NGC 7000 0.5 0.31
21:35–21:45 — nothing worth pointing at — 0.17
21:45–22:40 NGC 7000 0.92 0.55
22:40–00:05 V1057 Cyg 1.42 0.51
00:05–01:30 M31 1.42 0.45
01:30–02:55 M33 1.42 0.44
02:55–05:00 M45 2.08 0.48
05:00–05:05 M42 0.08 0.37
05:05–05:30 — nothing worth pointing at — 0.42
05:30–05:45 M45 0.25 0.3
05:45–06:45 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 50 46 21:45–05:05 (marginal) 89.6° at 03:35 51.6° 1.42
M42 Great Orion Nebula 3 3 05:00–05:05 (marginal) 42.9° at 08:30 98.0° 0.08
M45 Seven Sisters 38 33 01:20–05:05 (marginal) 72.5° at 06:40 75.1° 2.33
NGC 7000 North America Nebula 61 56 21:45–05:05 (marginal) 87.2° at 23:50 56.3° 1.42
V1057 Cyg 61 56 21:45–05:05 (marginal) 87.3° at 23:55 56.2° 1.42
M33 Triangulum Pinwheel 40 36 23:00–05:05 (marginal) 79.1° at 04:25 50.9° 1.42
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-08-28"

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"}.