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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 Tuesday, 04 March 2031 · astronomical night 19:46 → 05:17 (9.52 h) · Moon 83% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:45–19:15: quality 0.1M31 19:15–19:50: quality 0.3M31 19:50–20:00: quality 0.6M31 20:00–20:20: quality 0.5M31 20:20–20:45: quality 0.4M31 20:45–21:00: quality 0.3observe M31 19:15–19:20observe M31 19:50–20:40M42M42 18:45–19:15: quality 0.1M42 19:15–19:50: quality 0.2M42 19:50–21:15: quality 0.4M42 21:15–22:30: quality 0.3M42 22:30–23:00: quality 0.2observe M42 21:55–22:10M45M45 18:45–19:15: quality 0.1M45 19:15–19:50: quality 0.3M45 19:50–21:05: quality 0.5M45 21:05–22:20: quality 0.4M45 22:20–22:50: quality 0.3M45 22:50–23:00: quality 0.2observe M45 21:00–21:55observe M45 22:10–22:35NGC 7000NGC 7000 03:40–03:55: quality 0.4NGC 7000 03:55–04:15: quality 0.5NGC 7000 04:15–04:25: quality 0.6NGC 7000 04:25–04:40: quality 0.7NGC 7000 04:40–05:20: quality 0.8NGC 7000 05:20–05:55: quality 0.4NGC 7000 05:55–06:25: quality 0.1observe NGC 7000 03:40–04:35V1057 CygV1057 Cyg 03:40–03:55: quality 0.4V1057 Cyg 03:55–04:15: quality 0.5V1057 Cyg 04:15–04:25: quality 0.6V1057 Cyg 04:25–04:40: quality 0.7V1057 Cyg 04:40–05:20: quality 0.8V1057 Cyg 05:20–05:55: quality 0.4V1057 Cyg 05:55–06:25: quality 0.1observe V1057 Cyg 04:35–05:55M33M33 18:45–19:15: quality 0.1M33 19:15–19:50: quality 0.3M33 19:50–20:00: quality 0.6M33 20:00–20:30: quality 0.5M33 20:30–20:50: quality 0.4M33 20:50–21:10: quality 0.3observe M33 20:40–21:00scheduleM31M45NGC 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
18:10–19:15 — nothing worth pointing at — 1.08
19:15–19:20 M31 0.08 0.3
19:20–19:50 — nothing worth pointing at — 0.5
19:50–20:40 M31 0.83 0.47
20:40–21:00 M33 0.33 0.36
21:00–21:55 M45 0.92 0.44
21:55–22:10 M42 0.25 0.32
22:10–22:35 M45 0.42 0.35
22:35–03:40 — nothing worth pointing at — 5.08
03:40–04:35 NGC 7000 0.92 0.53
04:35–05:55 V1057 Cyg 1.33 0.64
05:55–06:55 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 10 unknown 19:50–20:55 (marginal) 89.5° at 14:15 89.9° 0.92
M42 Great Orion Nebula 11 unknown 19:50–22:10 (marginal) 42.9° at 19:10 39.2° 0.25
M45 Seven Sisters 19 unknown 19:50–22:35 (marginal) 72.5° at 17:20 55.9° 1.33
NGC 7000 North America Nebula 29 unknown 04:20–05:20 (good) 87.2° at 10:30 116.3° 0.92
V1057 Cyg 29 unknown 04:20–05:20 (good) 87.3° at 10:30 116.3° 1.33
M33 Triangulum Pinwheel 11 unknown 19:50–21:00 (marginal) 79.1° at 15:10 83.7° 0.33
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2031-03-04"

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"}.