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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, 26 February 2027 · astronomical night 19:39 → 05:27 (9.79 h) · Moon 62% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:40–19:10: quality 0.1M31 19:10–19:40: quality 0.4M31 19:40–20:25: quality 0.8M31 20:25–20:40: quality 0.7M31 20:40–20:55: quality 0.6M31 20:55–21:15: quality 0.5M31 21:15–21:20: quality 0.4observe M31 20:15–21:00M42M42 18:40–19:10: quality 0.1M42 19:10–19:40: quality 0.4M42 19:40–21:15: quality 0.9M42 21:15–22:25: quality 0.8M42 22:25–22:45: quality 0.7M42 22:45–23:00: quality 0.6M42 23:00–23:15: quality 0.5M42 23:15–23:20: quality 0.4observe M42 21:30–23:20M45M45 18:40–19:10: quality 0.2M45 19:10–19:40: quality 0.5M45 19:40–20:25: quality 1.0M45 20:25–21:50: quality 0.9M45 21:50–22:35: quality 0.8M45 22:35–22:50: quality 0.7M45 22:50–23:00: quality 0.6M45 23:00–23:15: quality 0.5M45 23:15–23:20: quality 0.4observe M45 19:10–20:15NGC 7000NGC 7000 04:05–04:25: quality 0.4NGC 7000 04:25–04:40: quality 0.5NGC 7000 04:40–05:00: quality 0.6NGC 7000 05:00–05:30: quality 0.7NGC 7000 05:30–06:00: quality 0.4NGC 7000 06:00–06:35: quality 0.1observe NGC 7000 04:05–05:10V1057 CygV1057 Cyg 04:05–04:25: quality 0.4V1057 Cyg 04:25–04:45: quality 0.5V1057 Cyg 04:45–05:00: quality 0.6V1057 Cyg 05:00–05:30: quality 0.7V1057 Cyg 05:30–06:00: quality 0.4V1057 Cyg 06:00–06:35: quality 0.1observe V1057 Cyg 05:10–06:00M33M33 18:40–19:10: quality 0.1M33 19:10–19:15: quality 0.5M33 19:15–19:40: quality 0.4M33 19:40–19:55: quality 0.9M33 19:55–20:45: quality 0.8M33 20:45–20:55: quality 0.7M33 20:55–21:10: quality 0.6M33 21:10–21:25: quality 0.5M33 21:25–21:35: quality 0.4observe M33 21:00–21:30scheduleM45M31M42NGC 7000V1057 Cyg20:0022:0000:0002:0004:0006:00

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
18:05–19:10 — nothing worth pointing at — 1.08
19:10–20:15 M45 1.08 0.76
20:15–21:00 M31 0.75 0.67
21:00–21:30 M33 0.5 0.52
21:30–23:20 M42 1.83 0.7
23:20–04:05 — nothing worth pointing at — 4.75
04:05–05:10 NGC 7000 1.08 0.53
05:10–06:00 V1057 Cyg 0.83 0.5
06:00–07:00 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 30 unknown 19:40–20:50 (good) 89.7° at 14:40 143.1° 0.75
M42 Great Orion Nebula 70 unknown 19:40–22:50 (good) 42.9° at 19:30 135.8° 1.83
M45 Seven Sisters 85 unknown 19:40–22:55 (good) 72.5° at 17:45 173.8° 1.08
NGC 7000 North America Nebula 19 unknown 04:50–05:30 (good) 87.2° at 10:55 102.9° 1.08
V1057 Cyg 19 unknown 04:50–05:30 (good) 87.3° at 10:55 102.9° 0.83
M33 Triangulum Pinwheel 36 unknown 19:40–21:05 (good) 79.1° at 15:30 155.6° 0.5
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-02-26"

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"}.