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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, 20 April 2028 · astronomical night 21:50 → 04:48 (6.97 h) · Moon 14% (waning crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 05:30–06:05: quality 0.1M42M42 20:40–20:50: quality 0.1M45M45 20:40–20:50: quality 0.1NGC 7000NGC 7000 01:30–01:40: quality 0.4NGC 7000 01:40–02:00: quality 0.5NGC 7000 02:00–02:15: quality 0.6NGC 7000 02:15–02:30: quality 0.7NGC 7000 02:30–03:25: quality 0.8NGC 7000 03:25–04:50: quality 0.9NGC 7000 04:50–05:30: quality 0.5NGC 7000 05:30–06:05: quality 0.1observe NGC 7000 01:30–03:35V1057 CygV1057 Cyg 01:30–01:40: quality 0.4V1057 Cyg 01:40–02:00: quality 0.5V1057 Cyg 02:00–02:15: quality 0.6V1057 Cyg 02:15–02:30: quality 0.7V1057 Cyg 02:30–03:25: quality 0.8V1057 Cyg 03:25–04:50: quality 0.9V1057 Cyg 04:50–05:30: quality 0.5V1057 Cyg 05:30–06:05: quality 0.1observe V1057 Cyg 03:35–05:30M33scheduleNGC 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
20:05–01:30 — nothing worth pointing at — 5.42
01:30–03:35 NGC 7000 2.08 0.7
03:35–05:30 V1057 Cyg 1.92 0.75
05:30–06:35 — nothing worth pointing at — 1.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 0 unknown — 89.7° at 12:10 47.8° 0.0
M42 Great Orion Nebula 0 unknown — 42.9° at 17:00 96.7° 0.0
M45 Seven Sisters 0 unknown — 72.5° at 15:15 72.1° 0.0
NGC 7000 North America Nebula 69 unknown 02:05–04:50 (good) 87.2° at 08:20 54.0° 2.08
V1057 Cyg 69 unknown 02:05–04:50 (good) 87.3° at 08:20 54.0° 1.92
M33 Triangulum Pinwheel 0 unknown — 79.1° at 13:00 47.3° 0.0

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2028-04-20"

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"}.