UAL1490 United
Airbus A319 131 · N811UA · SFO → BOI
· 0:38Quality 77soft focusside-onturned left 16°
Software-steadied: the hops of the camera motor are smoothed out (plane wobble −60%). 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
- 93%
- First lockfrom target selected
- 2.6 s
- Centring, medianaz / el while locked
- 0.17° / 0.19°
- Centring, 90th pctaz / el while locked
- 0.57° / 0.58°
- Tightest field of viewhorizontal
- 4.1°
- Time to 8°from first lock
- 8.2 s
- Time to tightestfrom first lock
- 10.9 s
- Time at telefield of view ≤ 5.5°
- 24.5 s
- Jitter at teleaz / el, standard deviation
- 0.18° / 0.20°
- Swing at teleaz / el, peak to peak
- 0.98° / 1.05°
- Pan reversalsper 10 s at tele
- 0.0
- Largest pan hopin any 1 s at tele
- 1.74°
- Largest tilt hopin any 1 s at tele
- 1.24°
- Pose error, mediancommand vs camera
- 0.72°
- Largest correctionvision vs prediction
- 2.08°
- Zoom steps
- 27
Aircraft & route
- Flight
- UAL1490
- Registration
- N811UA
- Type
- Airbus A319 131
- Airline
- United
- From
- SFO · San Francisco
- To
- BOI · Boise
- Ground speed
- 272 kt
- Altitude at closest
- 5,875 ft
- Vertical rate
- +3,328 ft/min
- Category
- A3
- ICAO hex
- ab0ed6
Pass geometry
- Max elevation
- 17.4°
- Elevation at start → end
- 16.5° → 16.3°
- Azimuth at start → end
- 316° NW → 271° W
- Closest-approach azimuth
- 294° WNW
- Minimum slant range
- 5.5 km
- Heading at closest
- 226° SW
- Aspect at closest
- side-on (68°)
- Turn
- turned left 16°
- Departure
- Yes — climbing out after take-off
- Zenith pass
- No
- Dead-zone wrap
- No
- Duration
- 0:38 (38.0 s)
- Lock
- 93%
Build & tuning
The tracker build that flew this pass and the live settings that mattered, so passes can be compared across changes.
- Build
- 2026-10-16h — lock-first association on (A/B −40% tele gaps)
- Commit
- dfc3684
- Node
- v22.22.2
- Camera
- TONGVEO 20x PTZ · 1920×1080 @ 30 fps
- Clip
- 18.5 MB · 37.0 s · offset -0.8 s
- pursuit
- velocity
- maxLeadSec
- 3
- panLatencySec
- 0.6
- tiltLatencySec
- 0.4
- rippleDeg
- 0.5
- rippleTeleDeg
- 0.25
- maxSpeedStepFwps
- 0.45
- speedReachFrac
- 0.8
- lockedSigmaDeg
- 0.35
- sigmaGrowthDps
- 0.1
- aimLeadSec
- -0.24
- 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