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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, 08 August 2025 · astronomical night 22:19 → 04:34 (6.25 h) · Moon 100% (full moon) · weather: ERA5 history

M31M31 22:15–22:20: quality 0.1M31 22:20–22:30: quality 0.3M31 22:30–22:55: quality 0.4M31 22:55–23:20: quality 0.5M31 23:20–01:40: quality 0.6M31 01:40–04:35: quality 0.7M31 04:35–05:20: quality 0.4M31 05:20–05:55: quality 0.1observe M31 00:50–02:25M42M45M45 02:25–02:45: quality 0.4M45 02:45–03:00: quality 0.5M45 03:00–03:15: quality 0.6M45 03:15–04:25: quality 0.7M45 04:25–04:35: quality 0.8M45 04:35–05:20: quality 0.4M45 05:20–05:55: quality 0.1observe M45 04:00–05:20NGC 7000NGC 7000 21:05–21:40: quality 0.1NGC 7000 21:40–22:20: quality 0.3NGC 7000 22:20–04:35: quality 0.6NGC 7000 04:35–05:20: quality 0.3NGC 7000 05:20–05:55: quality 0.1observe NGC 7000 21:40–23:15V1057 CygV1057 Cyg 21:05–21:40: quality 0.1V1057 Cyg 21:40–22:20: quality 0.3V1057 Cyg 22:20–04:35: quality 0.6V1057 Cyg 04:35–05:20: quality 0.3V1057 Cyg 05:20–05:55: quality 0.1observe V1057 Cyg 23:15–00:50M33M33 23:50–00:05: quality 0.3M33 00:05–00:25: quality 0.4M33 00:25–00:45: quality 0.5M33 00:45–02:30: quality 0.6M33 02:30–04:35: quality 0.7M33 04:35–05:20: quality 0.4M33 05:20–05:55: quality 0.1observe M33 02:25–04:00scheduleNGC 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
20:30–21:40 — nothing worth pointing at — 1.17
21:40–23:15 NGC 7000 1.58 0.5
23:15–00:50 V1057 Cyg 1.58 0.61
00:50–02:25 M31 1.58 0.65
02:25–04:00 M33 1.58 0.69
04:00–05:20 M45 1.33 0.55
05:20–06:25 — nothing worth pointing at — 1.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 73 73 00:35–04:35 (good) 89.6° at 04:55 80.3° 1.58
M42 Great Orion Nebula 0 0 — 42.9° at 09:45 123.5° 0.0
M45 Seven Sisters 33 33 03:10–04:35 (good) 72.5° at 07:55 108.2° 1.33
NGC 7000 North America Nebula 65 65 01:50–04:35 (good) 87.3° at 01:10 64.6° 1.58
V1057 Cyg 64 64 01:55–04:35 (good) 87.3° at 01:10 64.5° 1.58
M33 Triangulum Pinwheel 60 60 01:40–04:35 (good) 79.1° at 05:45 83.1° 1.58

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2025-08-08"

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"}.