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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 Saturday, 26 August 2028 · astronomical night 21:43 → 05:01 (7.3 h) · Moon 49% (first quarter) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 21:05–21:10: quality 0.1M31 21:10–21:25: quality 0.2M31 21:25–21:45: quality 0.3M31 21:45–21:50: quality 0.6M31 21:50–22:10: quality 0.7M31 22:10–23:15: quality 0.8M31 23:15–00:20: quality 0.9M31 00:20–05:05: quality 1.0M31 05:05–05:40: quality 0.5M31 05:40–06:15: quality 0.2observe M31 00:00–01:25observe M31 05:05–05:35M42M42 04:50–04:55: quality 0.4M42 04:55–05:05: quality 0.5M42 05:05–05:35: quality 0.3M42 05:35–05:40: quality 0.4M42 05:40–06:15: quality 0.1observe M42 04:50–05:05observe M42 05:35–05:40M45M45 01:10–01:20: quality 0.4M45 01:20–01:35: quality 0.5M45 01:35–01:45: quality 0.6M45 01:45–02:00: quality 0.7M45 02:00–02:45: quality 0.8M45 02:45–04:10: quality 0.9M45 04:10–05:05: quality 1.0M45 05:05–05:40: quality 0.5M45 05:40–06:15: quality 0.2observe M45 02:50–04:50NGC 7000NGC 7000 20:35–21:10: quality 0.1NGC 7000 21:10–21:15: quality 0.4NGC 7000 21:15–21:45: quality 0.5NGC 7000 21:45–23:15: quality 0.9NGC 7000 23:15–03:30: quality 1.0NGC 7000 03:30–05:00: quality 0.9NGC 7000 05:00–05:05: quality 0.8NGC 7000 05:05–05:40: quality 0.4NGC 7000 05:40–06:15: quality 0.1observe NGC 7000 21:10–22:35V1057 CygV1057 Cyg 20:35–21:10: quality 0.1V1057 Cyg 21:10–21:15: quality 0.4V1057 Cyg 21:15–21:45: quality 0.5V1057 Cyg 21:45–23:15: quality 0.9V1057 Cyg 23:15–03:30: quality 1.0V1057 Cyg 03:30–05:00: quality 0.9V1057 Cyg 05:00–05:05: quality 0.8V1057 Cyg 05:05–05:40: quality 0.4V1057 Cyg 05:40–06:15: quality 0.1observe V1057 Cyg 22:35–00:00M33M33 22:35–22:45: quality 0.4M33 22:45–23:00: quality 0.5M33 23:00–23:15: quality 0.6M33 23:15–23:25: quality 0.7M33 23:25–00:15: quality 0.8M33 00:15–01:35: quality 0.9M33 01:35–05:05: quality 1.0M33 05:05–05:40: quality 0.5M33 05:40–06:15: quality 0.2observe M33 01:25–02:50scheduleNGC 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
20:00–21:10 — nothing worth pointing at — 1.17
21:10–22:35 NGC 7000 1.42 0.72
22:35–00:00 V1057 Cyg 1.42 0.96
00:00–01:25 M31 1.42 0.97
01:25–02:50 M33 1.42 0.98
02:50–04:50 M45 2.0 0.93
04:50–05:05 M42 0.25 0.46
05:05–05:35 M31 0.5 0.5
05:35–05:40 M42 0.08 0.35
05:40–06:45 — nothing worth pointing at — 1.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 21:45–05:05 (good) 89.5° at 03:40 136.3° 1.92
M42 Great Orion Nebula 4 unknown 04:50–05:05 (marginal) 42.9° at 08:35 141.9° 0.33
M45 Seven Sisters 91 unknown 01:40–05:05 (good) 72.5° at 06:45 177.2° 2.0
NGC 7000 North America Nebula 100 unknown 21:45–05:05 (good) 87.2° at 00:00 97.1° 1.42
V1057 Cyg 100 unknown 21:45–05:05 (good) 87.3° at 00:00 97.0° 1.42
M33 Triangulum Pinwheel 100 unknown 23:10–05:05 (good) 79.1° at 04:35 147.5° 1.42
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2028-08-26"

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"}.