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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, 20 February 2043 · astronomical night 19:33 → 05:35 (10.05 h) · Moon 90% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:30–19:05: quality 0.1M31 19:05–19:35: quality 0.3M31 19:35–20:10: quality 0.6M31 20:10–21:00: quality 0.5M31 21:00–21:25: quality 0.4M31 21:25–21:45: quality 0.3observe M31 19:05–19:20observe M31 19:35–20:20M42M42 18:30–19:05: quality 0.1M42 19:05–19:35: quality 0.2M42 19:35–21:05: quality 0.4M42 21:05–23:10: quality 0.3M42 23:10–23:45: quality 0.2observe M42 22:20–22:50M45M45 18:30–19:05: quality 0.1M45 19:05–19:30: quality 0.3M45 19:30–19:35: quality 0.2M45 19:35–20:45: quality 0.5M45 20:45–22:55: quality 0.4M45 22:55–23:30: quality 0.3M45 23:30–23:45: quality 0.2observe M45 21:20–22:20observe M45 22:50–23:15NGC 7000NGC 7000 04:25–04:45: quality 0.4NGC 7000 04:45–05:05: quality 0.5NGC 7000 05:05–05:25: 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 04:25–05:25V1057 CygV1057 Cyg 04:25–04:30: quality 0.3V1057 Cyg 04:30–04:50: quality 0.4V1057 Cyg 04:50–05:05: quality 0.5V1057 Cyg 05:05–05:25: 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 05:25–06:10M33M33 18:30–19:05: quality 0.1M33 19:05–19:35: quality 0.3M33 19:35–20:05: quality 0.6M33 20:05–21:10: quality 0.5M33 21:10–21:35: quality 0.4M33 21:35–21:55: quality 0.3observe M33 20:20–21:20scheduleM31M33M45NGC 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
18:00–19:05 — nothing worth pointing at — 1.08
19:05–19:20 M31 0.25 0.3
19:20–19:35 — nothing worth pointing at — 0.25
19:35–20:20 M31 0.75 0.56
20:20–21:20 M33 1.0 0.5
21:20–22:20 M45 1.0 0.4
22:20–22:50 M42 0.5 0.32
22:50–23:15 M45 0.42 0.33
23:15–04:25 — nothing worth pointing at — 5.17
04:25–05:25 NGC 7000 1.0 0.49
05:25–06:10 V1057 Cyg 0.75 0.48
06:10–07:10 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 18 unknown 19:35–21:35 (marginal) 89.8° at 15:05 85.9° 1.0
M42 Great Orion Nebula 14 unknown 19:35–22:50 (marginal) 42.9° at 19:55 46.4° 0.5
M45 Seven Sisters 23 unknown 19:35–23:15 (marginal) 72.5° at 18:10 56.3° 1.42
NGC 7000 North America Nebula 16 unknown 05:15–05:40 (good) 87.2° at 11:15 108.5° 1.0
V1057 Cyg 16 unknown 05:15–05:40 (good) 87.2° at 11:15 108.6° 0.75
M33 Triangulum Pinwheel 19 unknown 19:35–21:45 (marginal) 79.2° at 15:55 81.8° 1.0
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2043-02-20"

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"}.