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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 Monday, 20 March 2028 · astronomical night 20:07 → 04:48 (8.7 h) · Moon 23% (waning crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:05–19:35: quality 0.1M31 19:35–19:55: quality 0.2M42M42 19:05–19:35: quality 0.1M42 19:35–20:10: quality 0.4M42 20:10–20:55: quality 0.8M42 20:55–21:15: quality 0.7M42 21:15–21:30: quality 0.6M42 21:30–21:45: quality 0.5M42 21:45–21:55: quality 0.4observe M42 20:55–21:55M45M45 19:05–19:35: quality 0.1M45 19:35–19:40: quality 0.5M45 19:40–20:10: quality 0.4M45 20:10–20:20: quality 0.9M45 20:20–21:05: quality 0.8M45 21:05–21:20: quality 0.7M45 21:20–21:30: quality 0.6M45 21:30–21:45: quality 0.5M45 21:45–21:55: quality 0.4observe M45 19:35–20:55NGC 7000NGC 7000 02:35–02:40: quality 0.4NGC 7000 02:40–03:00: quality 0.5NGC 7000 03:00–03:15: quality 0.6NGC 7000 03:15–03:35: quality 0.7NGC 7000 03:35–04:50: quality 0.8NGC 7000 04:50–05:25: quality 0.4NGC 7000 05:25–05:55: quality 0.1observe NGC 7000 02:35–03:55V1057 CygV1057 Cyg 02:35–02:45: quality 0.4V1057 Cyg 02:45–03:00: quality 0.5V1057 Cyg 03:00–03:15: quality 0.6V1057 Cyg 03:15–03:35: quality 0.7V1057 Cyg 03:35–04:50: quality 0.8V1057 Cyg 04:50–05:25: quality 0.4V1057 Cyg 05:25–05:55: quality 0.1observe V1057 Cyg 03:55–05:25M33M33 19:05–19:35: quality 0.1M33 19:35–19:50: quality 0.3M33 19:50–20:05: quality 0.2scheduleM45M42NGC 7000V1057 Cyg20:0022:0000:0002:0004:0006:00

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
18:30–19:35 — nothing worth pointing at — 1.08
19:35–20:55 M45 1.33 0.66
20:55–21:55 M42 1.0 0.58
21:55–02:35 — nothing worth pointing at — 4.67
02:35–03:55 NGC 7000 1.33 0.64
03:55–05:25 V1057 Cyg 1.5 0.65
05:25–06:25 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 1 unknown — 89.6° at 13:10 85.0° 0.0
M42 Great Orion Nebula 31 unknown 20:10–21:20 (good) 42.9° at 18:05 131.9° 1.0
M45 Seven Sisters 33 unknown 20:10–21:25 (good) 72.5° at 16:15 116.0° 1.33
NGC 7000 North America Nebula 39 unknown 03:10–04:50 (good) 87.2° at 09:25 63.9° 1.33
V1057 Cyg 39 unknown 03:10–04:50 (good) 87.3° at 09:25 63.8° 1.5
M33 Triangulum Pinwheel 1 unknown — 79.1° at 14:00 89.5° 0.0

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2028-03-20"

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"}.