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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 Wednesday, 22 February 2040 · astronomical night 19:34 → 05:33 (9.97 h) · Moon 77% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:35–19:05: quality 0.1M31 19:05–19:35: quality 0.3M31 19:35–20:45: quality 0.5M31 20:45–21:10: quality 0.4M31 21:10–21:40: quality 0.3observe M31 19:35–20:30M42M42 18:35–19:05: quality 0.1M42 19:05–19:35: quality 0.2M42 19:35–22:35: quality 0.4M42 22:35–23:20: quality 0.3M42 23:20–23:40: quality 0.2observe M42 22:20–23:00M45M45 18:35–19:05: quality 0.1M45 19:05–19:35: quality 0.2M45 19:35–22:50: quality 0.4M45 22:50–23:25: quality 0.3M45 23:25–23:40: quality 0.2observe M45 21:25–22:20observe M45 23:00–23:05NGC 7000NGC 7000 04:20–04:30: quality 0.4NGC 7000 04:30–04:45: quality 0.5NGC 7000 04:45–05:05: quality 0.6NGC 7000 05:05–05:20: quality 0.7NGC 7000 05:20–05:35: quality 0.8NGC 7000 05:35–06:10: quality 0.4NGC 7000 06:10–06:40: quality 0.1observe NGC 7000 04:20–05:15V1057 CygV1057 Cyg 04:20–04:30: quality 0.4V1057 Cyg 04:30–04:45: quality 0.5V1057 Cyg 04:45–05:05: quality 0.6V1057 Cyg 05:05–05:20: quality 0.7V1057 Cyg 05:20–05:35: quality 0.8V1057 Cyg 05:35–06:10: quality 0.4V1057 Cyg 06:10–06:40: quality 0.1observe V1057 Cyg 05:15–06:10M33M33 18:35–19:05: quality 0.1M33 19:05–19:35: quality 0.3M33 19:35–20:55: quality 0.5M33 20:55–21:20: quality 0.4M33 21:20–21:45: quality 0.3M33 21:45–21:50: quality 0.2observe M33 20:30–21:25scheduleM31M33M45NGC 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
18:00–19:35 — nothing worth pointing at — 1.58
19:35–20:30 M31 0.92 0.52
20:30–21:25 M33 0.92 0.43
21:25–22:20 M45 0.92 0.38
22:20–23:00 M42 0.67 0.34
23:00–23:05 M45 0.08 0.31
23:05–04:20 — nothing worth pointing at — 5.25
04:20–05:15 NGC 7000 0.92 0.56
05:15–06:10 V1057 Cyg 0.92 0.54
06:10–07:10 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 15 unknown 19:35–21:25 (marginal) 89.5° at 15:00 71.3° 0.92
M42 Great Orion Nebula 14 unknown 19:35–23:00 (marginal) 42.9° at 19:50 33.8° 0.67
M45 Seven Sisters 18 unknown 19:35–23:05 (marginal) 72.5° at 18:00 37.1° 1.0
NGC 7000 North America Nebula 22 unknown 04:55–05:35 (good) 87.2° at 11:10 102.3° 0.92
V1057 Cyg 22 unknown 04:55–05:35 (good) 87.3° at 11:10 102.3° 0.92
M33 Triangulum Pinwheel 15 unknown 19:35–21:35 (marginal) 79.2° at 15:50 64.4° 0.92
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2040-02-22"

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"}.