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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, 19 February 2030 · astronomical night 19:32 → 05:36 (10.08 h) · Moon 96% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:30–19:00: quality 0.1M31 19:00–19:15: quality 0.5M31 19:15–19:35: quality 0.4M31 19:35–19:50: quality 0.9M31 19:50–20:25: quality 0.8M31 20:25–20:55: quality 0.7M31 20:55–21:15: quality 0.6M31 21:15–21:30: quality 0.5M31 21:30–21:50: quality 0.4observe M31 21:10–21:50M42M42 18:30–19:00: quality 0.1M42 19:00–19:35: quality 0.4M42 19:35–19:50: quality 0.9M42 19:50–21:30: quality 0.7M42 21:30–22:50: quality 0.6M42 22:50–23:15: quality 0.5M42 23:15–23:35: quality 0.4M42 23:35–23:50: quality 0.3observe M42 21:50–22:55M45M45 18:30–19:00: quality 0.2M45 19:00–19:35: quality 0.5M45 19:35–19:50: quality 1.0M45 19:50–20:45: quality 0.9M45 20:45–22:00: quality 0.8M45 22:00–23:00: quality 0.7M45 23:00–23:15: quality 0.6M45 23:15–23:30: quality 0.5M45 23:30–23:45: quality 0.4M45 23:45–23:50: quality 0.3observe M45 20:05–21:10observe M45 22:55–23:50NGC 7000NGC 7000 04:30–04:50: quality 0.4NGC 7000 04:50–05:10: quality 0.5NGC 7000 05:10–05:25: quality 0.6NGC 7000 05:25–05:40: quality 0.7NGC 7000 05:40–06:10: quality 0.4NGC 7000 06:10–06:45: quality 0.1observe NGC 7000 04:30–05:35V1057 CygV1057 Cyg 04:30–04:50: quality 0.4V1057 Cyg 04:50–05:10: quality 0.5V1057 Cyg 05:10–05:25: quality 0.6V1057 Cyg 05:25–05:40: quality 0.7V1057 Cyg 05:40–06:10: quality 0.4V1057 Cyg 06:10–06:45: quality 0.1observe V1057 Cyg 05:35–06:10M33M33 18:30–19:00: quality 0.1M33 19:00–19:35: quality 0.5M33 19:35–19:50: quality 0.9M33 19:50–20:45: quality 0.8M33 20:45–21:15: quality 0.7M33 21:15–21:30: quality 0.6M33 21:30–21:45: quality 0.5M33 21:45–22:00: quality 0.4observe M33 19:00–20:05scheduleM33M45M42M45NGC 700018:0020:0022:0000:0002:0004:0006:00

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
17:55–19:00 — nothing worth pointing at — 1.08
19:00–20:05 M33 1.08 0.64
20:05–21:10 M45 1.08 0.86
21:10–21:50 M31 0.67 0.46
21:50–22:55 M42 1.08 0.6
22:55–23:50 M45 0.92 0.5
23:50–04:30 — nothing worth pointing at — 4.67
04:30–05:35 NGC 7000 1.08 0.52
05:35–06:10 V1057 Cyg 0.58 0.42
06:10–07:10 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 40 unknown 19:35–21:05 (good) 89.5° at 15:05 137.1° 0.67
M42 Great Orion Nebula 65 unknown 19:35–22:20 (good) 42.9° at 20:00 87.8° 1.08
M45 Seven Sisters 88 unknown 19:35–23:05 (good) 72.5° at 18:10 113.7° 2.0
NGC 7000 North America Nebula 16 unknown 05:15–05:40 (good) 87.2° at 11:20 126.4° 1.08
V1057 Cyg 16 unknown 05:15–05:40 (good) 87.3° at 11:20 126.5° 0.58
M33 Triangulum Pinwheel 46 unknown 19:35–21:20 (good) 79.1° at 16:00 138.4° 1.08
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2030-02-19"

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"}.