UAL45 United
ZRH → SFO
· 1:59Quality 91side-onturned right 16°
Trace
Where the aircraft sat in the frame, second by second. Click the chart to jump the video there.
—FOV —az —el —pose —
Loading telemetry…
Lock
Events
Tracking metrics
How well the camera kept the aircraft centred. Tap a metric for what it means and what good looks like.
- Lockshare of the pass
- 75%
- First lockfrom target selected
- 5.2 s
- Centring, medianaz / el while locked
- 0.46° / 0.31°
- Centring, 90th pctaz / el while locked
- 1.91° / 1.22°
- Tightest field of viewhorizontal
- 4.1°
- Time to 8°from first lock
- 5.2 s
- Time to tightestfrom first lock
- 24.3 s
- Time at telefield of view ≤ 5.5°
- 27.2 s
- Jitter at teleaz / el, standard deviation
- 0.55° / 0.43°
- Swing at teleaz / el, peak to peak
- 2.73° / 1.65°
- Pan reversalsper 10 s at tele
- 1.5
- Largest pan hopin any 1 s at tele
- 4.85°
- Largest tilt hopin any 1 s at tele
- 2.29°
- Pose error, mediancommand vs camera
- 0.63°
- Largest correctionvision vs prediction
- 2.33°
- Zoom steps
- 61
Aircraft & route
- Flight
- UAL45
- Registration
- —
- Type
- —
- Airline
- United
- From
- ZRH · Zurich
- To
- SFO · San Francisco
- Ground speed
- 263 kt
- Altitude at closest
- 11,150 ft
- Vertical rate
- —
- Category
- A5
- ICAO hex
- a1bfac
Pass geometry
- Max elevation
- 69.9°
- Elevation at start → end
- 27.5° → 18.5°
- Azimuth at start → end
- 331° NNW → 138° SE
- Closest-approach azimuth
- 49° NE
- Minimum slant range
- 3.6 km
- Heading at closest
- 140° SE
- Aspect at closest
- side-on (89°)
- Turn
- turned right 16°
- Departure
- No
- Zenith pass
- No
- Dead-zone wrap
- No
- Duration
- 1:59 (118.9 s)
- Lock
- 75%
Build & tuning
The tracker build that flew this pass and the live settings that mattered, so passes can be compared across changes.
- Build
- 2026-10-13h — no zoom-focus direct while the lens is still zooming (wedge race)
- Commit
- 181d1fa+wip
- Node
- v22.22.2
- Camera
- TONGVEO 20x PTZ · 1920×1080 @ 30 fps
- Clip
- 59.5 MB · 119.0 s · offset -1.0 s
- pursuit
- velocity
- maxLeadSec
- 3
- panLatencySec
- 0.6
- tiltLatencySec
- 0.4
- rippleDeg
- 0.5
- rippleTeleDeg
- 0.25
- rateFloorDegPerDps
- 2.5
- rateFloorMaxDeg
- 12
- lockedSigmaDeg
- 0.35
- correctionSlewDps
- 2.5
- kp
- 1
- ki
- 0.6
This clip and poster are © Skylight (Cameron Paczek): free for non-commercial use with credit to skylightceiling.com, not MIT. License