← single target

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 Friday, 31 July 2026 · astronomical night 22:33 → 04:21 (5.79 h) · Moon 95% (waning gibbous) · weather: ERA5 history

VegaVega 21:15–21:55: quality 0.1Vega 21:55–22:35: quality 0.4Vega 22:35–00:45: quality 0.7Vega 00:45–03:25: quality 0.6Vega 03:25–04:25: quality 0.5Vega 04:25–04:50: quality 0.3Vega 04:50–05:05: quality 0.2Vega 05:05–05:35: quality 0.1observe Vega 21:55–04:25scheduleVega22:0000:0002:0004:0006:00

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
20:40–21:55 — nothing worth pointing at — 1.25
21:55–04:25 Vega 6.5 0.6
04:25–06:20 — nothing worth pointing at — 1.92

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
Vega Vega 73 73 22:35–02:25 (good) 87.1° at 23:20 71.8° 6.5

💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-07-31"

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"}.