UAL1147 United
Boeing 787 8 · N26902 · BOS → EWR
· 1:43Quality 88lost lockside-on
Software-steadied: the hops of the camera motor are smoothed out (plane wobble −66%). 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
- 89%
- First lockfrom target selected
- 5.1 s
- Centring, medianaz / el while locked
- 0.11° / 0.07°
- Centring, 90th pctaz / el while locked
- 0.28° / 0.19°
- Tightest field of viewhorizontal
- 3.8°
- Time to 8°from first lock
- 3.2 s
- Time to tightestfrom first lock
- —
- Time at telefield of view ≤ 5.5°
- 88.3 s
- Jitter at teleaz / el, standard deviation
- 0.15° / 0.11°
- Swing at teleaz / el, peak to peak
- 1.20° / 0.69°
- Pan reversalsper 10 s at tele
- 0.1
- Largest pan hopin any 1 s at tele
- 13.34°
- Largest tilt hopin any 1 s at tele
- 0.55°
- Pose error, mediancommand vs camera
- 0.60°
- Largest correctionvision vs prediction
- 0.36°
- Zoom steps
- 12
Aircraft & route
- Flight
- UAL1147
- Registration
- N26902
- Type
- Boeing 787 8
- Airline
- United
- From
- BOS · Boston
- To
- EWR · New York
- Ground speed
- 250 kt
- Altitude at closest
- 11,375 ft
- Vertical rate
- —
- Category
- A5
- ICAO hex
- a2a2df
Pass geometry
- Max elevation
- 27.0°
- Elevation at start → end
- 19.6° → 20.1°
- Azimuth at start → end
- 336° NNW → 63° ENE
- Closest-approach azimuth
- 21° NNE
- Minimum slant range
- 7.7 km
- Heading at closest
- 112° ESE
- Aspect at closest
- side-on (90°)
- Turn
- straight (0°)
- Departure
- No
- Zenith pass
- No
- Dead-zone wrap
- No
- Duration
- 1:43 (103.1 s)
- Lock
- 89%
Build & tuning
The tracker build that flew this pass and the live settings that mattered, so passes can be compared across changes.
- Build
- 2026-10-14n — vision skyline mask 31x cheaper (loop back to ~15 Hz)
- Commit
- af2a83e
- Node
- v22.22.2
- Camera
- TONGVEO 20x PTZ · 1920×1080 @ 30 fps
- Clip
- 50.5 MB · 101.6 s · offset -0.9 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
- -0.16
- 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