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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 Sunday, 02 August 2026 · astronomical night 22:30 → 04:24 (5.9 h) · Moon 82% (waning gibbous) · weather: ERA5 history

V1057 CygV1057 Cyg 21:10–21:50: quality 0.1V1057 Cyg 21:50–22:00: quality 0.4V1057 Cyg 22:00–22:30: quality 0.5V1057 Cyg 22:30–22:35: quality 0.4V1057 Cyg 22:35–00:30: quality 0.7V1057 Cyg 00:30–04:25: quality 0.6V1057 Cyg 04:25–05:10: quality 0.3V1057 Cyg 05:10–05:50: quality 0.1observe V1057 Cyg 21:50–04:25scheduleV1057 Cyg22:0000:0002:0004:0006:00

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
20:35–21:50 — nothing worth pointing at — 1.25
21:50–04:25 V1057 Cyg 6.58 0.61
04:25–06:20 — nothing worth pointing at — 1.92

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
V1057 Cyg 73 72 22:35–02:05 (good) 87.3° at 01:35 57.3° 6.58

💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-08-02"

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"}.