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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 Friday, 05 February 2027 · astronomical night 19:15 → 05:53 (10.63 h) · Moon 0% (new moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:15–18:45: quality 0.2M31 18:45–19:20: quality 0.5M31 19:20–19:30: quality 1.0M31 19:30–20:55: quality 0.9M31 20:55–21:50: quality 0.8M31 21:50–22:05: quality 0.7M31 22:05–22:20: quality 0.6M31 22:20–22:35: quality 0.5M31 22:35–22:45: quality 0.4observe M31 18:45–19:55M42M42 18:15–18:45: quality 0.1M42 18:45–19:20: quality 0.4M42 19:20–22:40: quality 0.9M42 22:40–23:50: quality 0.8M42 23:50–00:05: quality 0.7M42 00:05–00:20: quality 0.6M42 00:20–00:35: quality 0.5M42 00:35–00:45: quality 0.4observe M42 22:15–00:45M45M45 18:15–18:45: quality 0.2M45 18:45–19:20: quality 0.5M45 19:20–21:50: quality 1.0M45 21:50–23:10: quality 0.9M45 23:10–23:55: quality 0.8M45 23:55–00:10: quality 0.7M45 00:10–00:25: quality 0.6M45 00:25–00:40: quality 0.5M45 00:40–00:45: quality 0.4observe M45 21:05–22:15NGC 7000NGC 7000 18:15–18:45: quality 0.1NGC 7000 18:45–18:55: quality 0.3NGC 7000 18:55–19:15: quality 0.2NGC 7000 05:25–05:35: quality 0.4NGC 7000 05:35–05:50: quality 0.5NGC 7000 05:50–05:55: quality 0.6NGC 7000 05:55–06:15: quality 0.3NGC 7000 06:15–06:30: quality 0.4NGC 7000 06:30–07:00: quality 0.1observe NGC 7000 05:25–05:55observe NGC 7000 06:00–06:30V1057 CygV1057 Cyg 18:15–18:45: quality 0.1V1057 Cyg 18:45–18:55: quality 0.3V1057 Cyg 18:55–19:15: quality 0.2V1057 Cyg 05:25–05:35: quality 0.4V1057 Cyg 05:35–05:50: quality 0.5V1057 Cyg 05:50–05:55: quality 0.6V1057 Cyg 05:55–06:20: quality 0.3V1057 Cyg 06:20–06:30: quality 0.4V1057 Cyg 06:30–07:00: quality 0.1M33M33 18:15–18:45: quality 0.2M33 18:45–19:20: quality 0.5M33 19:20–19:55: quality 1.0M33 19:55–21:15: quality 0.9M33 21:15–22:05: quality 0.8M33 22:05–22:20: quality 0.7M33 22:20–22:35: quality 0.6M33 22:35–22:50: quality 0.5M33 22:50–22:55: quality 0.4observe M33 19:55–21:05scheduleM31M33M45M4218:0020:0022:0000:0002:0004:0006:00

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
17:40–18:45 — nothing worth pointing at — 1.08
18:45–19:55 M31 1.17 0.72
19:55–21:05 M33 1.17 0.91
21:05–22:15 M45 1.17 0.96
22:15–00:45 M42 2.5 0.74
00:45–05:25 — nothing worth pointing at — 4.67
05:25–05:55 NGC 7000 0.5 0.48
05:55–06:00 — nothing worth pointing at — 0.08
06:00–06:30 NGC 7000 0.5 0.34
06:30–07:30 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 73 unknown 19:20–22:10 (good) 89.6° at 16:05 81.3° 1.17
M42 Great Orion Nebula 89 unknown 19:20–00:15 (good) 42.9° at 20:55 126.9° 2.5
M45 Seven Sisters 100 unknown 19:20–00:15 (good) 72.5° at 19:05 110.8° 1.17
NGC 7000 North America Nebula 9 unknown 05:25–05:55 (marginal) 87.3° at 12:20 63.4° 1.0
V1057 Cyg 9 unknown 05:25–05:55 (marginal) 87.3° at 12:20 63.4° 0.0
M33 Triangulum Pinwheel 82 unknown 19:20–22:25 (good) 79.1° at 16:55 85.0° 1.17

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-02-05"

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"}.