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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, 05 June 2026 · astronomical night 22:59 → 03:39 (4.66 h) · Moon 74% (waning gibbous) · weather: ERA5 history

M31M31 02:30–02:50: quality 0.3M31 02:50–03:20: quality 0.4M31 03:20–03:40: quality 0.5M31 03:40–04:35: quality 0.3M31 04:35–05:15: quality 0.1observe M31 02:40–03:40M42M45NGC 7000NGC 7000 22:35–23:00: quality 0.2NGC 7000 23:00–23:05: quality 0.5NGC 7000 23:05–23:25: quality 0.6NGC 7000 23:25–23:40: quality 0.7NGC 7000 23:40–00:00: quality 0.8NGC 7000 00:00–00:20: quality 0.4NGC 7000 00:20–00:55: quality 0.5NGC 7000 00:55–01:00: quality 0.4NGC 7000 01:00–02:00: quality 0.5NGC 7000 02:00–03:40: quality 0.6NGC 7000 03:40–04:35: quality 0.3NGC 7000 04:35–05:15: quality 0.1observe NGC 7000 23:00–00:45observe NGC 7000 04:00–04:35V1057 CygV1057 Cyg 22:35–23:00: quality 0.2V1057 Cyg 23:00–23:05: quality 0.5V1057 Cyg 23:05–23:25: quality 0.6V1057 Cyg 23:25–23:40: quality 0.7V1057 Cyg 23:40–00:00: quality 0.8V1057 Cyg 00:00–00:25: quality 0.4V1057 Cyg 00:25–00:55: quality 0.5V1057 Cyg 00:55–01:00: quality 0.4V1057 Cyg 01:00–02:00: quality 0.5V1057 Cyg 02:00–03:40: quality 0.6V1057 Cyg 03:40–04:35: quality 0.3V1057 Cyg 04:35–05:15: quality 0.1observe V1057 Cyg 00:45–02:40M33M33 04:00–04:05: quality 0.1M33 04:05–04:35: quality 0.2M33 04:35–05:15: quality 0.1scheduleNGC 7000V1057 CygM31NGC 700022:0000:0002:0004:00

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
20:50–23:00 — nothing worth pointing at — 2.17
23:00–00:45 NGC 7000 1.75 0.58
00:45–02:40 V1057 Cyg 1.92 0.54
02:40–03:40 M31 1.0 0.41
03:40–04:00 — nothing worth pointing at — 0.33
04:00–04:35 NGC 7000 0.58 0.32
04:35–05:50 — nothing worth pointing at — 1.25

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 14 12 02:40–03:40 (marginal) 89.6° at 09:05 75.4° 1.0
M42 Great Orion Nebula 0 0 — 42.9° at 14:00 120.7° 0.0
M45 Seven Sisters 0 0 — 72.5° at 12:15 103.4° 0.0
NGC 7000 North America Nebula 86 67 02:00–03:00 (good) 87.2° at 05:25 61.8° 2.33
V1057 Cyg 86 67 02:00–03:00 (good) 87.3° at 05:25 61.7° 1.92
M33 Triangulum Pinwheel 1 1 — 79.1° at 10:00 78.1° 0.0

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-06-05"

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"}.