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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 Tuesday, 05 May 2026 · astronomical night 22:13 → 04:21 (6.13 h) · Moon 84% (waning gibbous) · weather: ERA5 history

M31M31 04:30–05:00: quality 0.2M31 05:00–05:05: quality 0.3M31 05:05–05:45: quality 0.1M42M45NGC 7000NGC 7000 00:35–00:40: quality 0.3NGC 7000 00:40–01:00: quality 0.4NGC 7000 01:00–01:25: quality 0.5NGC 7000 01:25–02:15: quality 0.6NGC 7000 02:15–04:25: quality 0.7NGC 7000 04:25–05:05: quality 0.4NGC 7000 05:05–05:45: quality 0.1observe NGC 7000 00:35–02:55V1057 CygV1057 Cyg 00:35–00:40: quality 0.3V1057 Cyg 00:40–01:05: quality 0.4V1057 Cyg 01:05–01:25: quality 0.5V1057 Cyg 01:25–02:15: quality 0.6V1057 Cyg 02:15–04:25: quality 0.7V1057 Cyg 04:25–05:05: quality 0.4V1057 Cyg 05:05–05:45: quality 0.1observe V1057 Cyg 02:55–05:05M33scheduleNGC 7000V1057 Cyg22:0000:0002:0004:0006:00

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
20:20–00:35 — nothing worth pointing at — 4.25
00:35–02:55 NGC 7000 2.33 0.57
02:55–05:05 V1057 Cyg 2.17 0.61
05:05–06:15 — nothing worth pointing at — 1.17

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 1 1 — 89.6° at 11:10 114.3° 0.0
M42 Great Orion Nebula 0 0 — 42.9° at 16:05 145.8° 0.0
M45 Seven Sisters 0 0 — 72.5° at 14:15 148.3° 0.0
NGC 7000 North America Nebula 50 50 01:35–04:25 (good) 87.3° at 07:25 82.3° 2.33
V1057 Cyg 50 50 01:35–04:25 (good) 87.3° at 07:25 82.2° 2.17
M33 Triangulum Pinwheel 0 0 — 79.1° at 12:00 121.3° 0.0

Left out

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

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"}.