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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 Tuesday, 09 March 2027 · astronomical night 19:52 → 05:09 (9.28 h) · Moon 3% (new moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:50–19:25: quality 0.1M31 19:25–19:50: quality 0.4M31 19:50–19:55: quality 0.3M31 19:55–20:00: quality 0.7M31 20:00–20:15: quality 0.6M31 20:15–20:30: quality 0.5M31 20:30–20:40: quality 0.4observe M31 19:25–20:15M42M42 18:50–19:25: quality 0.1M42 19:25–19:55: quality 0.4M42 19:55–20:35: quality 0.9M42 20:35–21:45: quality 0.8M42 21:45–22:00: quality 0.7M42 22:00–22:15: quality 0.6M42 22:15–22:30: quality 0.5M42 22:30–22:40: quality 0.4observe M42 21:45–22:40M45M45 18:50–19:25: quality 0.1M45 19:25–19:55: quality 0.5M45 19:55–21:05: quality 0.9M45 21:05–21:50: quality 0.8M45 21:50–22:05: quality 0.7M45 22:05–22:20: quality 0.6M45 22:20–22:30: quality 0.5M45 22:30–22:40: quality 0.4observe M45 20:45–21:45NGC 7000NGC 7000 03:20–03:30: quality 0.4NGC 7000 03:30–03:45: quality 0.5NGC 7000 03:45–04:05: quality 0.6NGC 7000 04:05–04:20: quality 0.7NGC 7000 04:20–05:10: quality 0.8NGC 7000 05:10–05:45: quality 0.4NGC 7000 05:45–06:15: quality 0.1observe NGC 7000 03:20–04:20V1057 CygV1057 Cyg 03:20–03:30: quality 0.4V1057 Cyg 03:30–03:45: quality 0.5V1057 Cyg 03:45–04:05: quality 0.6V1057 Cyg 04:05–04:20: quality 0.7V1057 Cyg 04:20–05:10: quality 0.8V1057 Cyg 05:10–05:45: quality 0.4V1057 Cyg 05:45–06:15: quality 0.1observe V1057 Cyg 04:20–05:45M33M33 18:50–19:25: quality 0.1M33 19:25–19:55: quality 0.4M33 19:55–20:00: quality 0.8M33 20:00–20:15: quality 0.7M33 20:15–20:30: quality 0.6M33 20:30–20:40: quality 0.5M33 20:40–20:50: quality 0.4observe M33 20:15–20:45scheduleM31M45M42NGC 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
18:20–19:25 — nothing worth pointing at — 1.08
19:25–20:15 M31 0.83 0.47
20:15–20:45 M33 0.5 0.53
20:45–21:45 M45 1.0 0.84
21:45–22:40 M42 0.92 0.57
22:40–03:20 — nothing worth pointing at — 4.67
03:20–04:20 NGC 7000 1.0 0.57
04:20–05:45 V1057 Cyg 1.42 0.66
05:45–06:45 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 11 unknown 19:55–20:05 (good) 89.5° at 13:55 35.3° 0.83
M42 Great Orion Nebula 51 unknown 19:55–22:10 (good) 42.9° at 18:50 79.5° 0.92
M45 Seven Sisters 57 unknown 19:55–22:10 (good) 72.5° at 17:00 52.4° 1.0
NGC 7000 North America Nebula 33 unknown 03:55–05:10 (good) 87.3° at 10:10 58.0° 1.0
V1057 Cyg 33 unknown 03:55–05:10 (good) 87.3° at 10:10 57.9° 1.42
M33 Triangulum Pinwheel 16 unknown 19:55–20:20 (good) 79.1° at 14:50 29.8° 0.5
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-03-09"

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"}.