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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, 27 May 2028 · astronomical night 22:49 → 03:47 (4.97 h) · Moon 15% (waxing crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 03:05–03:10: quality 0.4M31 03:10–03:30: quality 0.5M31 03:30–03:45: quality 0.6M31 03:45–03:50: quality 0.7M31 03:50–04:40: quality 0.4M31 04:40–05:20: quality 0.1observe M31 03:05–04:40M42M45NGC 7000NGC 7000 23:05–23:15: quality 0.4NGC 7000 23:15–23:35: quality 0.5NGC 7000 23:35–23:50: quality 0.6NGC 7000 23:50–00:05: quality 0.7NGC 7000 00:05–01:00: quality 0.8NGC 7000 01:00–02:30: quality 0.9NGC 7000 02:30–03:50: quality 1.0NGC 7000 03:50–04:40: quality 0.5NGC 7000 04:40–05:20: quality 0.2observe NGC 7000 23:05–01:00V1057 CygV1057 Cyg 23:05–23:15: quality 0.4V1057 Cyg 23:15–23:35: quality 0.5V1057 Cyg 23:35–23:50: quality 0.6V1057 Cyg 23:50–00:05: quality 0.7V1057 Cyg 00:05–01:00: quality 0.8V1057 Cyg 01:00–02:30: quality 0.9V1057 Cyg 02:30–03:50: quality 1.0V1057 Cyg 03:50–04:40: quality 0.5V1057 Cyg 04:40–05:20: quality 0.2observe V1057 Cyg 01:00–03:05M33M33 04:35–04:40: quality 0.2M33 04:40–05:20: 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
20:45–23:05 — nothing worth pointing at — 2.33
23:05–01:00 NGC 7000 1.92 0.68
01:00–03:05 V1057 Cyg 2.08 0.92
03:05–04:40 M31 1.58 0.47
04:40–05:55 — nothing worth pointing at — 1.25

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 14 unknown 03:35–03:50 (good) 89.7° at 09:40 85.6° 1.58
M42 Great Orion Nebula 0 unknown — 42.9° at 14:35 40.4° 0.0
M45 Seven Sisters 0 unknown — 72.5° at 12:45 53.0° 0.0
NGC 7000 North America Nebula 100 unknown 23:45–03:50 (good) 87.2° at 05:55 111.5° 1.92
V1057 Cyg 100 unknown 23:45–03:50 (good) 87.3° at 05:55 111.5° 2.08
M33 Triangulum Pinwheel 0 unknown — 79.1° at 10:30 80.0° 0.0

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2028-05-27"

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"}.