UAL2409 United
Boeing 737NG 924ER/W · N39416 · SFO → ?
· 0:30Quality 73soft focusjumpyside-on
Software-steadied: the hops of the camera motor are smoothed out (plane wobble −62%). 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
- 83%
- First lockfrom target selected
- 4.9 s
- Centring, medianaz / el while locked
- 0.16° / 0.27°
- Centring, 90th pctaz / el while locked
- 2.81° / 1.09°
- Tightest field of viewhorizontal
- 4.1°
- Time to 8°from first lock
- 7.3 s
- Time to tightestfrom first lock
- 10.3 s
- Time at telefield of view ≤ 5.5°
- 16.1 s
- Jitter at teleaz / el, standard deviation
- 0.19° / 0.27°
- Swing at teleaz / el, peak to peak
- 1.28° / 1.13°
- Pan reversalsper 10 s at tele
- 0.0
- Largest pan hopin any 1 s at tele
- 3.95°
- Largest tilt hopin any 1 s at tele
- 2.96°
- Pose error, mediancommand vs camera
- 2.08°
- Largest correctionvision vs prediction
- 1.28°
- Zoom steps
- 36
Aircraft & route
- Flight
- UAL2409
- Registration
- N39416
- Type
- Boeing 737NG 924ER/W
- Airline
- United
- From
- SFO
- To
- —
- Ground speed
- 268 kt
- Altitude at closest
- 6,000 ft
- Vertical rate
- +3,072 ft/min
- Category
- A3
- ICAO hex
- a4943f
Pass geometry
- Max elevation
- 41.6°
- Elevation at start → end
- 23.5° → 38.4°
- Azimuth at start → end
- 338° NNW → 251° WSW
- Closest-approach azimuth
- 275° W
- Minimum slant range
- 2.7 km
- Heading at closest
- 195° SSW
- Aspect at closest
- side-on (80°)
- Turn
- straight (0°)
- Departure
- Yes — climbing out after take-off
- Zenith pass
- No
- Dead-zone wrap
- No
- Duration
- 0:30 (30.1 s)
- Lock
- 83%
Build & tuning
The tracker build that flew this pass and the live settings that mattered, so passes can be compared across changes.
- Build
- 2026-10-16i — lock-first on; shadow silhouette sky-masked
- Commit
- 5610684
- Node
- v22.22.2
- Camera
- TONGVEO 20x PTZ · 1920×1080 @ 30 fps
- Clip
- 5.3 MB · 30.0 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
- -0.19
- 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