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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, 22 May 2027 · astronomical night 22:40 → 03:54 (5.23 h) · Moon 94% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 03:25–03:45: quality 0.4M31 03:45–03:55: quality 0.5M31 03:55–04:30: quality 0.3M31 04:30–04:45: quality 0.4M31 04:45–05:25: quality 0.1observe M31 03:25–03:55observe M31 04:25–04:45M42M45NGC 7000NGC 7000 23:30–23:35: quality 0.3NGC 7000 23:35–00:00: quality 0.4NGC 7000 00:00–00:25: quality 0.5NGC 7000 00:25–01:50: quality 0.6NGC 7000 01:50–03:55: quality 0.7NGC 7000 03:55–04:45: quality 0.4NGC 7000 04:45–05:25: quality 0.1observe NGC 7000 23:30–01:15observe NGC 7000 03:55–04:25V1057 CygV1057 Cyg 23:30–23:35: quality 0.3V1057 Cyg 23:35–00:00: quality 0.4V1057 Cyg 00:00–00:25: quality 0.5V1057 Cyg 00:25–01:50: quality 0.6V1057 Cyg 01:50–03:55: quality 0.7V1057 Cyg 03:55–04:45: quality 0.4V1057 Cyg 04:45–05:25: quality 0.1observe V1057 Cyg 01:15–03:25M33M33 05:00–05:25: 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
20:40–23:30 — nothing worth pointing at — 2.83
23:30–01:15 NGC 7000 1.75 0.52
01:15–03:25 V1057 Cyg 2.17 0.67
03:25–03:55 M31 0.5 0.42
03:55–04:25 NGC 7000 0.5 0.37
04:25–04:45 M31 0.33 0.35
04:45–05:55 — nothing worth pointing at — 1.17

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 7 unknown 03:25–03:55 (marginal) 89.5° at 10:05 115.2° 0.83
M42 Great Orion Nebula 0 unknown — 42.9° at 15:00 147.1° 0.0
M45 Seven Sisters 0 unknown — 72.5° at 13:10 150.0° 0.0
NGC 7000 North America Nebula 57 unknown 00:35–03:55 (good) 87.2° at 06:20 82.3° 2.25
V1057 Cyg 56 unknown 00:35–03:55 (good) 87.3° at 06:20 82.2° 2.17
M33 Triangulum Pinwheel 0 unknown — 79.1° at 10:55 122.7° 0.0

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-05-22"

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"}.