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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, 04 June 2026 · astronomical night 22:58 → 03:40 (4.69 h) · Moon 82% (waning gibbous) · weather: ERA5 history

M31M31 04:00–04:35: quality 0.1M31 05:00–05:15: quality 0.1M42M45NGC 7000NGC 7000 22:35–23:00: quality 0.2NGC 7000 23:00–23:20: quality 0.5NGC 7000 23:20–23:40: quality 0.6NGC 7000 23:40–00:15: quality 0.7NGC 7000 00:15–00:25: quality 0.8NGC 7000 00:25–01:00: quality 0.6NGC 7000 04:00–04:35: quality 0.1NGC 7000 05:00–05:15: quality 0.1observe NGC 7000 23:00–00:00V1057 CygV1057 Cyg 22:35–23:00: quality 0.2V1057 Cyg 23:00–23:20: quality 0.5V1057 Cyg 23:20–23:40: quality 0.6V1057 Cyg 23:40–00:15: quality 0.7V1057 Cyg 00:15–00:25: quality 0.8V1057 Cyg 00:25–01:00: quality 0.6V1057 Cyg 04:00–04:35: quality 0.1V1057 Cyg 05:00–05:15: quality 0.1observe V1057 Cyg 00:00–01:00M33M33 04:10–04:35: quality 0.1M33 05:00–05:15: quality 0.1scheduleNGC 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
20:50–23:00 — nothing worth pointing at — 2.17
23:00–00:00 NGC 7000 1.0 0.6
00:00–01:00 V1057 Cyg 1.0 0.66
01:00–05:50 — nothing worth pointing at — 4.83

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 14 1 — 89.7° at 09:10 86.0° 0.0
M42 Great Orion Nebula 0 0 — 42.9° at 14:05 129.7° 0.0
M45 Seven Sisters 0 0 — 72.5° at 12:20 115.6° 0.0
NGC 7000 North America Nebula 79 30 23:30–00:25 (good) 87.2° at 05:25 66.2° 1.0
V1057 Cyg 79 30 23:30–00:25 (good) 87.3° at 05:25 66.2° 1.0
M33 Triangulum Pinwheel 1 0 — 79.1° at 10:00 89.8° 0.0

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-06-04"

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"}.