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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 Saturday, 12 February 2028 · astronomical night 19:23 → 05:46 (10.38 h) · Moon 92% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:20–18:55: quality 0.1M31 18:55–19:25: quality 0.5M31 19:25–20:30: quality 0.9M31 20:30–21:00: quality 0.8M31 21:00–21:30: quality 0.7M31 21:30–21:45: quality 0.6M31 21:45–22:00: quality 0.5M31 22:00–22:20: quality 0.4observe M31 21:15–22:20M42M42 18:20–18:55: quality 0.1M42 18:55–19:25: quality 0.4M42 19:25–20:35: quality 0.9M42 20:35–22:30: quality 0.7M42 22:30–23:25: quality 0.6M42 23:25–23:45: quality 0.5M42 23:45–00:05: quality 0.4M42 00:05–00:20: quality 0.3observe M42 22:20–23:30M45M45 18:20–18:55: quality 0.2M45 18:55–19:25: quality 0.5M45 19:25–20:35: quality 1.0M45 20:35–21:30: quality 0.9M45 21:30–22:45: quality 0.8M45 22:45–23:30: quality 0.7M45 23:30–23:45: quality 0.6M45 23:45–00:00: quality 0.5M45 00:00–00:20: quality 0.4observe M45 20:05–21:15observe M45 23:30–00:20NGC 7000NGC 7000 18:20–18:50: quality 0.1NGC 7000 05:00–05:20: quality 0.4NGC 7000 05:20–05:35: quality 0.5NGC 7000 05:35–05:50: quality 0.6NGC 7000 05:50–06:05: quality 0.3NGC 7000 06:05–06:20: quality 0.4NGC 7000 06:20–06:55: quality 0.1observe NGC 7000 05:00–06:10V1057 CygV1057 Cyg 18:20–18:50: quality 0.1V1057 Cyg 05:00–05:20: quality 0.4V1057 Cyg 05:20–05:35: quality 0.5V1057 Cyg 05:35–05:50: quality 0.6V1057 Cyg 05:50–06:05: quality 0.3V1057 Cyg 06:05–06:20: quality 0.4V1057 Cyg 06:20–06:55: quality 0.1observe V1057 Cyg 06:10–06:20M33M33 18:20–18:50: quality 0.2M33 18:50–18:55: quality 0.1M33 18:55–19:25: quality 0.5M33 19:25–19:30: quality 1.0M33 19:30–20:35: quality 0.9M33 20:35–21:15: quality 0.8M33 21:15–21:45: quality 0.7M33 21:45–22:00: quality 0.6M33 22:00–22:15: quality 0.5M33 22:15–22:30: quality 0.4observe M33 18:55–20:05scheduleM33M45M31M42M45NGC 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
17:45–18:55 — nothing worth pointing at — 1.17
18:55–20:05 M33 1.17 0.74
20:05–21:15 M45 1.17 0.94
21:15–22:20 M31 1.08 0.54
22:20–23:30 M42 1.17 0.62
23:30–00:20 M45 0.83 0.5
00:20–05:00 — nothing worth pointing at — 4.67
05:00–06:10 NGC 7000 1.17 0.45
06:10–06:20 V1057 Cyg 0.17 0.36
06:20–07:20 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 56 unknown 19:25–21:35 (good) 89.6° at 15:35 138.8° 1.08
M42 Great Orion Nebula 80 unknown 19:25–23:15 (good) 42.9° at 20:30 91.0° 1.17
M45 Seven Sisters 100 unknown 19:25–23:40 (good) 72.5° at 18:40 116.9° 2.0
NGC 7000 North America Nebula 10 unknown 05:45–05:50 (good) 87.2° at 11:50 125.1° 1.17
V1057 Cyg 10 unknown 05:45–05:50 (good) 87.3° at 11:50 125.2° 0.17
M33 Triangulum Pinwheel 63 unknown 19:25–21:50 (good) 79.1° at 16:30 141.1° 1.17
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2028-02-12"

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"}.