UAL817 United
Airbus A320 232 · N493UA · SFO → ?
· 1:34Quality 86lost lockside-onDead-zone wrap
Software-steadied: the hops of the camera motor are smoothed out (plane wobble −70%). 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
- 69%
- First lockfrom target selected
- 11.5 s
- Centring, medianaz / el while locked
- 0.07° / 0.23°
- Centring, 90th pctaz / el while locked
- 2.78° / 1.50°
- Tightest field of viewhorizontal
- 3.4°
- Time to 8°from first lock
- 40.0 s
- Time to tightestfrom first lock
- 44.3 s
- Time at telefield of view ≤ 5.5°
- 32.0 s
- Jitter at teleaz / el, standard deviation
- 0.08° / 0.15°
- Swing at teleaz / el, peak to peak
- 0.35° / 0.75°
- Pan reversalsper 10 s at tele
- 0.6
- Largest pan hopin any 1 s at tele
- 16.34°
- Largest tilt hopin any 1 s at tele
- 5.05°
- Pose error, mediancommand vs camera
- 0.41°
- Largest correctionvision vs prediction
- 3.69°
- Zoom steps
- 48
Aircraft & route
- Flight
- UAL817
- Registration
- N493UA
- Type
- Airbus A320 232
- Airline
- United
- From
- SFO
- To
- —
- Ground speed
- 278 kt
- Altitude at closest
- 4,275 ft
- Vertical rate
- +1,472 ft/min
- Category
- A3
- ICAO hex
- a61d00
Pass geometry
- Max elevation
- 70.8°
- Elevation at start → end
- 20.3° → 12.4°
- Azimuth at start → end
- 2° N → 199° SSW
- Closest-approach azimuth
- 281° W
- Minimum slant range
- 1.4 km
- Heading at closest
- 192° SSW
- Aspect at closest
- side-on (89°)
- Turn
- straight (6°)
- Departure
- Yes — climbing out after take-off
- Zenith pass
- No
- Dead-zone wrap
- Yes — pan pre-positioned across the stop
- Duration
- 1:34 (93.7 s)
- Lock
- 69%
Build & tuning
The tracker build that flew this pass and the live settings that mattered, so passes can be compared across changes.
- Build
- 2026-10-14i — zoom sigma grows after lock loss (0.1°/s)
- Commit
- 181d1fa+wip
- Node
- v22.22.2
- Camera
- TONGVEO 20x PTZ · 1920×1080 @ 30 fps
- Clip
- 46.6 MB · 94.0 s · offset -1.7 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
- 0.59
- 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