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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 Thursday, 20 February 2048 · astronomical night 19:32 → 05:36 (10.05 h) · Moon 42% (waxing crescent) · 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 19:35–20:50: quality 0.6M31 20:50–21:15: quality 0.5M31 21:15–21:35: quality 0.4M31 21:35–21:50: quality 0.3observe M31 19:05–20:10M42M42 18:30–19:05: quality 0.1M42 19:05–19:35: quality 0.3M42 19:35–19:50: quality 0.6M42 19:50–22:00: quality 0.7M42 22:00–23:05: quality 0.6M42 23:05–23:25: quality 0.5M42 23:25–23:45: quality 0.4observe M42 21:50–23:45M45M45 18:30–19:05: quality 0.1M45 19:05–19:35: quality 0.3M45 19:35–21:55: quality 0.7M45 21:55–23:05: quality 0.6M45 23:05–23:25: quality 0.5M45 23:25–23:40: quality 0.4M45 23:40–23:50: quality 0.3observe M45 20:10–21:15observe M45 23:45–23:50NGC 7000NGC 7000 04:25–04:35: quality 0.4NGC 7000 04:35–04:55: quality 0.5NGC 7000 04:55–05:10: quality 0.6NGC 7000 05:10–05:25: quality 0.7NGC 7000 05:25–05:40: quality 0.8NGC 7000 05:40–06:10: quality 0.4NGC 7000 06:10–06:45: quality 0.1observe NGC 7000 04:25–05:30V1057 CygV1057 Cyg 04:30–04:35: quality 0.4V1057 Cyg 04:35–04:55: quality 0.5V1057 Cyg 04:55–05:10: quality 0.6V1057 Cyg 05:10–05:30: quality 0.7V1057 Cyg 05:30–05:40: quality 0.8V1057 Cyg 05:40–06:10: quality 0.4V1057 Cyg 06:10–06:45: quality 0.1observe V1057 Cyg 05:30–06:10M33M33 18:30–19:05: quality 0.1M33 19:05–19:35: quality 0.3M33 19:35–21:05: quality 0.6M33 21:05–21:25: quality 0.5M33 21:25–21:50: quality 0.4M33 21:50–22:00: quality 0.3observe M33 21:15–21:50scheduleM31M45M42NGC 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
17:55–19:05 — nothing worth pointing at — 1.17
19:05–20:10 M31 1.08 0.48
20:10–21:15 M45 1.08 0.69
21:15–21:50 M33 0.58 0.43
21:50–23:45 M42 1.92 0.56
23:45–23:50 M45 0.08 0.32
23:50–04:25 — nothing worth pointing at — 4.58
04:25–05:30 NGC 7000 1.08 0.57
05:30–06:10 V1057 Cyg 0.67 0.51
06:10–07:10 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 22 unknown 19:35–20:20 (good) 89.8° at 15:05 37.8° 1.08
M42 Great Orion Nebula 46 unknown 19:35–22:50 (good) 42.9° at 19:55 43.4° 1.92
M45 Seven Sisters 51 unknown 19:35–22:55 (good) 72.6° at 18:10 7.2° 1.17
NGC 7000 North America Nebula 21 unknown 05:00–05:40 (good) 87.1° at 11:20 78.1° 1.08
V1057 Cyg 20 unknown 05:05–05:40 (good) 87.2° at 11:20 78.1° 0.67
M33 Triangulum Pinwheel 24 unknown 19:35–20:20 (good) 79.2° at 15:55 24.7° 0.58
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2048-02-20"

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"}.