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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, 30 May 2026 · astronomical night 22:52 → 03:44 (4.87 h) · Moon 100% (full moon) · weather: ERA5 history

M31M31 02:55–03:05: quality 0.3M31 03:05–03:30: quality 0.4M31 03:30–03:45: quality 0.5M31 03:45–04:00: quality 0.3M31 04:00–04:35: quality 0.2M31 04:35–05:20: quality 0.1observe M31 03:00–03:45M42M45NGC 7000NGC 7000 22:55–23:00: quality 0.3NGC 7000 23:00–23:20: quality 0.2NGC 7000 23:20–23:55: quality 0.3NGC 7000 23:55–00:00: quality 0.4NGC 7000 00:00–01:35: quality 0.3NGC 7000 01:35–02:00: quality 0.4NGC 7000 02:00–02:25: quality 0.6NGC 7000 02:25–03:45: quality 0.7NGC 7000 03:45–04:35: quality 0.3NGC 7000 04:35–05:20: quality 0.1observe NGC 7000 23:40–00:00observe NGC 7000 01:00–01:50observe NGC 7000 03:45–04:00V1057 CygV1057 Cyg 22:55–23:00: quality 0.3V1057 Cyg 23:00–23:20: quality 0.2V1057 Cyg 23:20–23:55: quality 0.3V1057 Cyg 23:55–00:00: quality 0.4V1057 Cyg 00:00–01:35: quality 0.3V1057 Cyg 01:35–02:00: quality 0.4V1057 Cyg 02:00–02:25: quality 0.6V1057 Cyg 02:25–03:45: quality 0.7V1057 Cyg 03:45–04:35: quality 0.3V1057 Cyg 04:35–05:20: quality 0.1observe V1057 Cyg 01:50–03:00M33M33 04:25–04:35: quality 0.1M33 04:50–05:00: quality 0.1M33 05:05–05:20: quality 0.1scheduleNGC 7000V1057 CygM3122:0000:0002:0004:00

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
20:45–23:40 — nothing worth pointing at — 2.92
23:40–00:00 NGC 7000 0.33 0.33
00:00–01:00 — nothing worth pointing at — 1.0
01:00–01:50 NGC 7000 0.83 0.35
01:50–03:00 V1057 Cyg 1.17 0.61
03:00–03:45 M31 0.75 0.43
03:45–04:00 NGC 7000 0.25 0.33
04:00–05:50 — nothing worth pointing at — 1.83

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 13 10 02:55–03:45 (marginal) 89.7° at 09:30 135.5° 0.75
M42 Great Orion Nebula 0 0 — 42.9° at 14:25 142.0° 0.0
M45 Seven Sisters 0 0 — 72.5° at 12:35 174.9° 0.0
NGC 7000 North America Nebula 73 48 02:00–03:45 (good) 87.2° at 05:45 96.7° 1.42
V1057 Cyg 73 48 02:00–03:45 (good) 87.3° at 05:45 96.7° 1.17
M33 Triangulum Pinwheel 1 1 — 79.1° at 10:20 146.1° 0.0

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-05-30"

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"}.