CCA986 Air China
Boeing 777 39LER · B-2088 · SFO → PEK
· 0:54Quality 80nose/tail
Software-steadied: the hops of the camera motor are smoothed out (plane wobble −78%). 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
- 68%
- First lockfrom target selected
- 10.7 s
- Centring, medianaz / el while locked
- 0.54° / 0.77°
- Centring, 90th pctaz / el while locked
- 3.02° / 9.04°
- Tightest field of viewhorizontal
- 5.0°
- Time to 8°from first lock
- 33.8 s
- Time to tightestfrom first lock
- 43.0 s
- Time at telefield of view ≤ 5.5°
- 0.4 s
- Jitter at teleaz / el, standard deviation
- —
- Swing at teleaz / el, peak to peak
- —
- Pan reversalsper 10 s at tele
- 0.0
- Largest pan hopin any 1 s at tele
- —
- Largest tilt hopin any 1 s at tele
- —
- Pose error, mediancommand vs camera
- 1.03°
- Largest correctionvision vs prediction
- 3.01°
- Zoom steps
- 34
Aircraft & route
- Flight
- CCA986
- Registration
- B-2088
- Type
- Boeing 777 39LER
- Airline
- Air China
- From
- SFO · San Francisco
- To
- PEK · Beijing
- Ground speed
- 195 kt
- Altitude at closest
- 1,250 ft
- Vertical rate
- +2,432 ft/min
- Category
- A5
- ICAO hex
- 78076e
Pass geometry
- Max elevation
- 84.0°
- Elevation at start → end
- 3.1° → 13.5°
- Azimuth at start → end
- 116° ESE → 298° WNW
- Closest-approach azimuth
- 38° NE
- Minimum slant range
- 409 m
- Heading at closest
- 297° WNW
- Aspect at closest
- nose/tail (5°)
- Turn
- straight (0°)
- Departure
- Yes — climbing out after take-off
- Zenith pass
- No
- Dead-zone wrap
- No
- Duration
- 0:54 (53.8 s)
- Lock
- 68%
Build & tuning
The tracker build that flew this pass and the live settings that mattered, so passes can be compared across changes.
- Build
- 2026-10-14f — camera profile, head-axes control, speed floor, park from profile, learned lead
- Commit
- 181d1fa+wip
- Node
- v22.22.2
- Camera
- TONGVEO 20x PTZ · 1920×1080 @ 30 fps
- Clip
- 27.0 MB · 54.0 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
- 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