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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 Thursday, 11 June 2026 · astronomical night 23:05 → 03:36 (4.51 h) · Moon 15% (waning crescent) · weather: ERA5 history

M31M31 02:05–02:25: quality 0.1M31 02:25–03:00: quality 0.2M42M45NGC 7000NGC 7000 22:15–22:50: quality 0.1NGC 7000 22:50–23:00: quality 0.2NGC 7000 23:00–23:10: quality 0.3NGC 7000 23:10–23:20: quality 0.6NGC 7000 23:20–00:00: quality 0.7NGC 7000 00:00–00:15: quality 0.6NGC 7000 00:15–02:00: quality 0.7NGC 7000 02:00–03:00: quality 0.3observe NGC 7000 23:05–00:35V1057 CygV1057 Cyg 22:15–22:50: quality 0.1V1057 Cyg 22:50–23:00: quality 0.2V1057 Cyg 23:00–23:10: quality 0.3V1057 Cyg 23:10–23:20: quality 0.6V1057 Cyg 23:20–00:00: quality 0.7V1057 Cyg 00:00–00:15: quality 0.6V1057 Cyg 00:15–02:00: quality 0.7V1057 Cyg 02:00–03:00: quality 0.3observe V1057 Cyg 00:35–02:00M33scheduleNGC 7000V1057 Cyg22:0000:0002:0004:00

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
20:55–23:05 — nothing worth pointing at — 2.17
23:05–00:35 NGC 7000 1.5 0.64
00:35–02:00 V1057 Cyg 1.42 0.7
02:00–05:50 — nothing worth pointing at — 3.83

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 28 3 — 89.5° at 08:45 29.8° 0.0
M42 Great Orion Nebula 0 0 — 42.9° at 13:40 56.0° 0.0
M45 Seven Sisters 0 0 — 72.5° at 11:45 23.7° 0.0
NGC 7000 North America Nebula 100 48 23:10–02:00 (good) 87.3° at 05:00 68.8° 1.5
V1057 Cyg 100 48 23:10–02:00 (good) 87.3° at 05:00 68.8° 1.42
M33 Triangulum Pinwheel 3 0 — 79.1° at 09:35 15.1° 0.0

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-06-11"

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"}.