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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, 07 April 2026 · astronomical night 21:30 → 05:15 (7.75 h) · Moon 71% (waning gibbous) · weather: ERA5 history

3C 2733C 273 20:30–21:00: quality 0.13C 273 23:00–00:00: quality 0.33C 273 00:00–01:00: quality 0.73C 273 01:00–01:50: quality 0.53C 273 01:50–02:00: quality 0.43C 273 02:00–03:00: quality 0.13C 273 03:00–03:20: quality 0.43C 273 03:20–04:00: quality 0.33C 273 04:00–04:25: quality 0.53C 273 04:25–04:45: quality 0.43C 273 04:45–05:05: quality 0.3observe 3C 273 00:00–02:00observe 3C 273 03:00–04:55observe 3C 273 05:00–05:05schedule3C 2733C 27320:0022:0000:0002:0004:0006:00

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
19:50–00:00 — nothing worth pointing at — 4.17
00:00–02:00 3C 273 2.0 0.56
02:00–03:00 — nothing worth pointing at — 1.0
03:00–04:55 3C 273 1.92 0.39
04:55–05:00 — nothing worth pointing at — 0.08
05:00–05:05 3C 273 0.08 0.32
05:05–06:55 — nothing worth pointing at — 1.83

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
3C 273 93 36 00:00–01:00 (good) 50.2° at 00:45 77.9° 4.0

💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-04-07"

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"}.