UAL892 United
Boeing 787 9 · N29975 · ICN → SFO
· 0:52Quality 80side-on
Software-steadied: the hops of the camera motor are smoothed out (plane wobble −48%). Download
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
- 81%
- First lockfrom target selected
- 5.1 s
- Centring, medianaz / el while locked
- 0.79° / 0.70°
- Centring, 90th pctaz / el while locked
- 3.27° / 1.12°
- Tightest field of viewhorizontal
- 6.6°
- Time to 8°from first lock
- 7.5 s
- Time to tightestfrom first lock
- 8.0 s
- Time at telefield of view ≤ 5.5°
- 0.0 s
- Jitter at teleaz / el, standard deviation
- —
- Swing at teleaz / el, peak to peak
- —
- Pan reversalsper 10 s at tele
- —
- Largest pan hopin any 1 s at tele
- —
- Largest tilt hopin any 1 s at tele
- —
- Pose error, mediancommand vs camera
- 1.23°
- Largest correctionvision vs prediction
- 1.90°
- Zoom steps
- 35
Aircraft & route
- Flight
- UAL892
- Registration
- N29975
- Type
- Boeing 787 9
- Airline
- United
- From
- ICN · Seoul
- To
- SFO · San Francisco
- Ground speed
- 307 kt
- Altitude at closest
- 11,275 ft
- Vertical rate
- —
- Category
- A5
- ICAO hex
- a31a54
Pass geometry
- Max elevation
- 70.0°
- Elevation at start → end
- 39.4° → 39.1°
- Azimuth at start → end
- 337° NNW → 123° ESE
- Closest-approach azimuth
- 50° NE
- Minimum slant range
- 3.7 km
- Heading at closest
- 140° SE
- Aspect at closest
- side-on (90°)
- Turn
- straight (0°)
- Departure
- No
- Zenith pass
- No
- Dead-zone wrap
- No
- Duration
- 0:52 (52.0 s)
- Lock
- 81%
Build & tuning
The tracker build that flew this pass and the live settings that mattered, so passes can be compared across changes.
- Build
- 2026-10-13l — log why the zoom ladder moved
- Commit
- 181d1fa+wip
- Node
- v22.22.2
- Camera
- TONGVEO 20x PTZ · 1920×1080 @ 30 fps
- Clip
- 26.0 MB · 52.0 s · offset -1.5 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