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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, 17 February 2028 · astronomical night 19:29 → 05:40 (10.18 h) · Moon 44% (waning crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:25–19:00: quality 0.1M31 19:00–19:25: quality 0.5M31 19:25–19:30: quality 0.4M31 19:30–20:10: quality 0.9M31 20:10–21:00: quality 0.8M31 21:00–21:20: quality 0.7M31 21:20–21:35: quality 0.6M31 21:35–21:50: quality 0.5M31 21:50–22:00: quality 0.4observe M31 21:20–21:50M42M42 18:25–19:00: quality 0.1M42 19:00–19:30: quality 0.4M42 19:30–21:55: quality 0.9M42 21:55–23:05: quality 0.8M42 23:05–23:20: quality 0.7M42 23:20–23:35: quality 0.6M42 23:35–23:50: quality 0.5M42 23:50–00:00: quality 0.4observe M42 21:50–00:00M45M45 18:25–19:00: quality 0.2M45 19:00–19:30: quality 0.5M45 19:30–21:05: quality 1.0M45 21:05–22:25: quality 0.9M45 22:25–23:10: quality 0.8M45 23:10–23:25: quality 0.7M45 23:25–23:40: quality 0.6M45 23:40–23:50: quality 0.5M45 23:50–00:00: quality 0.4observe M45 20:10–21:20NGC 7000NGC 7000 18:25–18:30: quality 0.1NGC 7000 04:40–04:55: quality 0.4NGC 7000 04:55–05:15: quality 0.5NGC 7000 05:15–05:35: quality 0.6NGC 7000 05:35–05:45: quality 0.7NGC 7000 05:45–06:15: quality 0.4NGC 7000 06:15–06:45: quality 0.1observe NGC 7000 04:40–05:50V1057 CygV1057 Cyg 18:25–18:30: quality 0.1V1057 Cyg 04:40–04:55: quality 0.4V1057 Cyg 04:55–05:15: quality 0.5V1057 Cyg 05:15–05:35: quality 0.6V1057 Cyg 05:35–05:45: quality 0.7V1057 Cyg 05:45–06:15: quality 0.4V1057 Cyg 06:15–06:45: quality 0.1observe V1057 Cyg 05:50–06:15M33M33 18:25–18:30: quality 0.2M33 18:30–19:00: quality 0.1M33 19:00–19:30: quality 0.5M33 19:30–20:30: quality 0.9M33 20:30–21:20: quality 0.8M33 21:20–21:35: quality 0.7M33 21:35–21:45: quality 0.6M33 21:45–22:00: quality 0.5M33 22:00–22:10: quality 0.4observe M33 19:00–20:10scheduleM33M45M42NGC 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
19:00–20:10 M33 1.17 0.72
20:10–21:20 M45 1.17 0.97
21:20–21:50 M31 0.5 0.54
21:50–00:00 M42 2.17 0.71
00:00–04:40 — nothing worth pointing at — 4.67
04:40–05:50 NGC 7000 1.17 0.52
05:50–06:15 V1057 Cyg 0.42 0.37
06:15–07:15 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 48 unknown 19:30–21:25 (good) 89.5° at 15:15 134.2° 0.5
M42 Great Orion Nebula 86 unknown 19:30–23:30 (good) 42.9° at 20:10 143.1° 2.17
M45 Seven Sisters 100 unknown 19:30–23:30 (good) 72.5° at 18:20 173.8° 1.17
NGC 7000 North America Nebula 14 unknown 05:25–05:45 (good) 87.2° at 11:30 95.6° 1.17
V1057 Cyg 14 unknown 05:25–05:45 (good) 87.3° at 11:30 95.5° 0.42
M33 Triangulum Pinwheel 55 unknown 19:30–21:40 (good) 79.1° at 16:10 144.8° 1.17
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2028-02-17"

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"}.