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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, 25 March 2027 · astronomical night 20:12 → 04:40 (8.47 h) · Moon 86% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:10–19:35: quality 0.1M42M42 19:10–19:40: quality 0.1M42 19:40–20:15: quality 0.4M42 20:15–20:40: quality 0.8M42 20:40–20:55: quality 0.7M42 20:55–21:15: quality 0.6M42 21:15–21:30: quality 0.5M42 21:30–21:35: quality 0.4observe M42 20:55–21:35M45M45 19:10–19:40: quality 0.1M45 19:40–20:15: quality 0.4M45 20:15–20:50: quality 0.8M45 20:50–21:00: quality 0.7M45 21:00–21:15: quality 0.6M45 21:15–21:30: quality 0.5M45 21:30–21:35: quality 0.4observe M45 19:40–20:55NGC 7000NGC 7000 02:15–02:20: quality 0.3NGC 7000 02:20–02:40: quality 0.4NGC 7000 02:40–03:00: quality 0.5NGC 7000 03:00–03:20: quality 0.6NGC 7000 03:20–04:45: quality 0.7NGC 7000 04:45–05:15: quality 0.4NGC 7000 05:15–05:50: quality 0.1observe NGC 7000 02:15–03:30V1057 CygV1057 Cyg 02:15–02:20: quality 0.3V1057 Cyg 02:20–02:40: quality 0.4V1057 Cyg 02:40–03:00: quality 0.5V1057 Cyg 03:00–03:20: quality 0.6V1057 Cyg 03:20–04:45: quality 0.7V1057 Cyg 04:45–05:15: quality 0.4V1057 Cyg 05:15–05:50: quality 0.1observe V1057 Cyg 03:30–05:15M33M33 19:10–19:40: quality 0.1M33 19:40–19:45: 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
18:35–19:40 — nothing worth pointing at — 1.08
19:40–20:55 M45 1.25 0.62
20:55–21:35 M42 0.67 0.54
21:35–02:15 — nothing worth pointing at — 4.67
02:15–03:30 NGC 7000 1.25 0.51
03:30–05:15 V1057 Cyg 1.75 0.62
05:15–06:15 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 0 unknown — 89.7° at 12:55 145.8° 0.0
M42 Great Orion Nebula 24 unknown 20:15–21:05 (good) 42.9° at 17:45 132.8° 0.67
M45 Seven Sisters 25 unknown 20:15–21:10 (good) 72.5° at 16:00 168.9° 1.25
NGC 7000 North America Nebula 33 unknown 03:10–04:45 (good) 87.2° at 09:05 105.4° 1.25
V1057 Cyg 33 unknown 03:10–04:45 (good) 87.3° at 09:05 105.4° 1.75
M33 Triangulum Pinwheel 0 unknown — 79.1° at 13:45 159.3° 0.0

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-03-25"

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"}.