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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.

Try: an autumn deep-sky night  ·  ← previous night · next night →

Night of Wednesday, 25 February 2026 · astronomical night 19:38 → 05:28 (9.83 h) · Moon 66% (waxing gibbous) · weather: ERA5 history

M31M31 18:35–19:10: quality 0.1M31 19:10–19:40: quality 0.3M31 19:40–20:35: quality 0.5M31 20:35–21:00: quality 0.4M31 21:00–21:25: quality 0.3observe M31 19:40–20:35M42M42 18:35–19:10: quality 0.1M42 19:10–19:40: quality 0.2M42 19:40–22:45: quality 0.4M42 22:45–23:00: quality 0.3M42 23:00–23:25: quality 0.1observe M42 22:15–23:00M45M45 18:35–19:10: quality 0.1M45 19:10–19:40: quality 0.2M45 19:40–20:55: quality 0.5M45 20:55–22:50: quality 0.4M45 22:50–23:00: quality 0.3M45 23:00–23:25: quality 0.1observe M45 21:20–22:15NGC 7000V1057 CygM33M33 18:35–19:10: quality 0.1M33 19:10–19:40: quality 0.3M33 19:40–20:45: quality 0.5M33 20:45–21:10: quality 0.4M33 21:10–21:35: quality 0.3observe M33 20:35–21:20scheduleM31M33M45M4220:0022:0000:0002:0004:0006:00

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
18:05–19:40 — nothing worth pointing at — 1.58
19:40–20:35 M31 0.92 0.5
20:35–21:20 M33 0.75 0.4
21:20–22:15 M45 0.92 0.43
22:15–23:00 M42 0.75 0.37
23:00–07:05 — nothing worth pointing at — 8.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 12 12 19:40–21:15 (marginal) 89.6° at 14:45 60.9° 0.92
M42 Great Orion Nebula 19 18 19:40–23:00 (marginal) 42.9° at 19:35 33.8° 0.75
M45 Seven Sisters 21 20 19:40–23:00 (marginal) 72.5° at 17:45 26.2° 0.92
NGC 7000 North America Nebula 25 0 — 87.3° at 10:55 94.5° 0.0
V1057 Cyg 24 0 — 87.3° at 10:55 94.6° 0.0
M33 Triangulum Pinwheel 13 13 19:40–21:20 (marginal) 79.1° at 15:35 53.3° 0.75

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-02-25"

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"}.