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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, 19 February 2027 · astronomical night 19:31 → 05:37 (10.09 h) · Moon 98% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:30–19:00: quality 0.1M31 19:00–19:35: quality 0.4M31 19:35–20:20: quality 0.7M31 20:20–21:00: quality 0.6M31 21:00–21:20: quality 0.5M31 21:20–21:40: quality 0.4M31 21:40–21:50: quality 0.3observe M31 20:05–21:10M42M42 18:30–19:00: quality 0.1M42 19:00–19:35: quality 0.2M42 19:35–20:25: quality 0.5M42 20:25–22:50: quality 0.4M42 22:50–23:25: quality 0.3M42 23:25–23:50: quality 0.2observe M42 22:15–23:05M45M45 18:30–19:00: quality 0.1M45 19:00–19:35: quality 0.3M45 19:35–21:15: quality 0.6M45 21:15–22:55: quality 0.5M45 22:55–23:20: quality 0.4M45 23:20–23:45: quality 0.3M45 23:45–23:50: quality 0.2observe M45 21:10–22:15observe M45 23:05–23:30NGC 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 0.4M33 19:35–20:25: quality 0.7M33 20:25–21:15: quality 0.6M33 21:15–21:30: quality 0.5M33 21:30–21:50: quality 0.4M33 21:50–22:00: quality 0.3observe M33 19:00–20:05scheduleM33M31M45M42NGC 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 0.52
20:05–21:10 M31 1.08 0.61
21:10–22:15 M45 1.08 0.52
22:15–23:05 M42 0.83 0.35
23:05–23:30 M45 0.42 0.36
23:30–04:30 — nothing worth pointing at — 5.0
04:30–05:35 NGC 7000 1.08 0.52
05:35–06:10 V1057 Cyg 0.58 0.42
06:10–07:15 — nothing worth pointing at — 1.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 27 unknown 19:35–20:50 (good) 89.6° at 15:10 105.6° 1.08
M42 Great Orion Nebula 22 unknown 19:35–23:05 (marginal) 42.9° at 20:00 59.0° 0.83
M45 Seven Sisters 38 unknown 19:35–20:30 (good) 72.5° at 18:10 77.1° 1.5
NGC 7000 North America Nebula 16 unknown 05:15–05:40 (good) 87.3° at 11:20 119.4° 1.08
V1057 Cyg 16 unknown 05:15–05:40 (good) 87.3° at 11:20 119.5° 0.58
M33 Triangulum Pinwheel 29 unknown 19:35–21:05 (good) 79.1° at 16:00 102.7° 1.08
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-02-19"

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"}.