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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 Wednesday, 05 August 2026 · astronomical night 22:25 → 04:29 (6.07 h) · Moon 52% (last quarter) · weather: ERA5 history

M31M31 22:30–22:40: quality 0.3M31 22:40–23:00: quality 0.4M31 23:00–23:05: quality 0.5M31 23:05–23:25: quality 0.6M31 23:25–23:45: quality 0.7M31 23:45–01:35: quality 0.6M31 01:35–02:00: quality 0.7M31 02:00–02:05: quality 0.6M31 02:05–02:40: quality 0.7M31 02:40–04:30: quality 0.6M31 04:30–05:15: quality 0.3M31 05:15–05:50: quality 0.1observe M31 01:00–02:30M42M45M45 02:35–02:55: quality 0.3M45 02:55–03:20: quality 0.4M45 03:20–04:30: quality 0.5M45 04:30–05:15: quality 0.3M45 05:15–05:50: quality 0.1observe M45 03:55–04:30NGC 7000NGC 7000 21:10–21:45: quality 0.1NGC 7000 21:45–22:00: quality 0.3NGC 7000 22:00–22:30: quality 0.4NGC 7000 22:30–23:00: quality 0.7NGC 7000 23:00–23:45: quality 0.9NGC 7000 23:45–02:55: quality 0.8NGC 7000 02:55–03:00: quality 0.7NGC 7000 03:00–03:25: quality 0.8NGC 7000 03:25–04:00: quality 0.7NGC 7000 04:00–04:20: quality 0.8NGC 7000 04:20–04:30: quality 0.7NGC 7000 04:30–05:05: quality 0.4NGC 7000 05:05–05:15: quality 0.3NGC 7000 05:15–05:50: quality 0.1observe NGC 7000 22:00–23:30V1057 CygV1057 Cyg 21:10–21:45: quality 0.1V1057 Cyg 21:45–22:00: quality 0.3V1057 Cyg 22:00–22:30: quality 0.4V1057 Cyg 22:30–23:00: quality 0.7V1057 Cyg 23:00–23:45: quality 0.9V1057 Cyg 23:45–02:55: quality 0.8V1057 Cyg 02:55–03:00: quality 0.7V1057 Cyg 03:00–03:25: quality 0.8V1057 Cyg 03:25–04:00: quality 0.7V1057 Cyg 04:00–04:20: quality 0.8V1057 Cyg 04:20–04:30: quality 0.7V1057 Cyg 04:30–05:05: quality 0.4V1057 Cyg 05:05–05:15: quality 0.3V1057 Cyg 05:15–05:50: quality 0.1observe V1057 Cyg 23:30–01:00M33M33 00:00–00:15: quality 0.3M33 00:15–00:35: quality 0.4M33 00:35–01:00: quality 0.5M33 01:00–04:30: quality 0.6M33 04:30–05:15: quality 0.3M33 05:15–05:50: quality 0.1observe M33 02:30–03:55observe M33 04:30–05:15scheduleNGC 7000V1057 CygM31M33M45M3322:0000:0002:0004:0006:00

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
20:30–22:00 — nothing worth pointing at — 1.5
22:00–23:30 NGC 7000 1.5 0.66
23:30–01:00 V1057 Cyg 1.5 0.8
01:00–02:30 M31 1.5 0.65
02:30–03:55 M33 1.42 0.61
03:55–04:30 M45 0.58 0.53
04:30–05:15 M33 0.75 0.31
05:15–06:25 — nothing worth pointing at — 1.17

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 81 75 00:05–04:30 (good) 89.6° at 05:05 31.0° 1.5
M42 Great Orion Nebula 0 0 — 42.9° at 10:00 52.3° 0.0
M45 Seven Sisters 16 16 02:45–04:30 (marginal) 72.5° at 08:10 18.3° 0.58
NGC 7000 North America Nebula 100 90 22:30–04:30 (good) 87.2° at 01:25 71.0° 1.5
V1057 Cyg 100 90 22:30–04:30 (good) 87.3° at 01:25 71.0° 1.5
M33 Triangulum Pinwheel 48 46 02:45–04:30 (good) 79.1° at 06:00 16.4° 2.17

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-08-05"

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"}.