← 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 Wednesday, 16 December 2026 · astronomical night 18:31 → 06:01 (11.5 h) · Moon 47% (waxing crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

V1057 CygV1057 Cyg 17:25–18:00: quality 0.1V1057 Cyg 18:00–18:35: quality 0.4V1057 Cyg 18:35–21:00: quality 0.7V1057 Cyg 21:00–21:45: quality 0.6V1057 Cyg 21:45–22:05: quality 0.5V1057 Cyg 22:05–22:30: quality 0.4V1057 Cyg 22:30–22:35: quality 0.3observe V1057 Cyg 18:00–22:35scheduleV1057 Cyg18:0020:0022:0000:0002:0004:0006:00

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
16:50–18:00 — nothing worth pointing at — 1.17
18:00–22:35 V1057 Cyg 4.58 0.6
22:35–07:45 — nothing worth pointing at — 9.17

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
V1057 Cyg 52 unknown 18:35–21:35 (good) 87.3° at 15:40 55.7° 4.58

💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-12-16"

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"}.