SWA3156 Southwest Airlines
Boeing 737NG 7CT/W · N7821L
· 2:09Quality 71soft focuslost lockside-onturned left 57°Dead-zone wrap
Software-steadied: the hops of the camera motor are smoothed out (plane wobble −69%). 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
- 5.0 s
- Centring, medianaz / el while locked
- 0.14° / 0.18°
- Centring, 90th pctaz / el while locked
- 0.38° / 0.48°
- Tightest field of viewhorizontal
- 4.1°
- Time to 8°from first lock
- 2.5 s
- Time to tightestfrom first lock
- 5.5 s
- Time at telefield of view ≤ 5.5°
- 83.7 s
- Jitter at teleaz / el, standard deviation
- 0.17° / 0.24°
- Swing at teleaz / el, peak to peak
- 1.30° / 1.56°
- Pan reversalsper 10 s at tele
- 0.4
- Largest pan hopin any 1 s at tele
- 4.16°
- Largest tilt hopin any 1 s at tele
- 3.00°
- Pose error, mediancommand vs camera
- 0.88°
- Largest correctionvision vs prediction
- 2.09°
- Zoom steps
- 49
Aircraft & route
- Flight
- SWA3156
- Registration
- N7821L
- Type
- Boeing 737NG 7CT/W (B737)
- Airline
- Southwest Airlines
- From
- —
- To
- —
- Ground speed
- 321 kt
- Altitude at closest
- 11,425 ft
- Vertical rate
- +1,600 ft/min
- Category
- A3
- ICAO hex
- aa9a7a
Pass geometry
- Max elevation
- 67.7°
- Elevation at start → end
- 19.0° → 21.7°
- Azimuth at start → end
- 4° N → 169° SSE
- Closest-approach azimuth
- 266° W
- Minimum slant range
- 3.8 km
- Heading at closest
- 183° S
- Aspect at closest
- side-on (83°)
- Turn
- turned left 57°
- Departure
- Yes — climbing out after take-off
- Zenith pass
- No
- Dead-zone wrap
- Yes — pan pre-positioned across the stop
- Duration
- 2:09 (128.6 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
- 2026-10-16h — lock-first association on (A/B −40% tele gaps)
- Commit
- dfc3684
- Node
- v22.22.2
- Camera
- TONGVEO 20x PTZ · 1920×1080 @ 30 fps
- Clip
- 33.2 MB · 129.0 s · offset -1.3 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