UAL611 United
Boeing 737NG 824/W · N76515 · SFO → ?
· 2:01Quality 76lost lockwrap pinnedside-onturned left 43°Dead-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
- 53%
- First lockfrom target selected
- 7.0 s
- Centring, medianaz / el while locked
- 0.21° / 0.37°
- Centring, 90th pctaz / el while locked
- 0.68° / 1.47°
- Tightest field of viewhorizontal
- 4.1°
- Time to 8°from first lock
- 2.8 s
- Time to tightestfrom first lock
- 15.0 s
- Time at telefield of view ≤ 5.5°
- 63.0 s
- Jitter at teleaz / el, standard deviation
- 0.37° / 0.32°
- Swing at teleaz / el, peak to peak
- 2.17° / 2.15°
- Pan reversalsper 10 s at tele
- 0.3
- Largest pan hopin any 1 s at tele
- 17.40°
- Largest tilt hopin any 1 s at tele
- 4.17°
- Pose error, mediancommand vs camera
- 1.06°
- Largest correctionvision vs prediction
- 3.60°
- Zoom steps
- 53
Aircraft & route
- Flight
- UAL611
- Registration
- N76515
- Type
- Boeing 737NG 824/W
- Airline
- United
- From
- SFO
- To
- —
- Ground speed
- 293 kt
- Altitude at closest
- 8,425 ft
- Vertical rate
- +2,944 ft/min
- Category
- A3
- ICAO hex
- aa56b4
Pass geometry
- Max elevation
- 47.6°
- Elevation at start → end
- 17.9° → 16.0°
- Azimuth at start → end
- 325° NW → 167° SSE
- Closest-approach azimuth
- 242° WSW
- Minimum slant range
- 3.5 km
- Heading at closest
- 157° SSE
- Aspect at closest
- side-on (85°)
- Turn
- turned left 43°
- Departure
- Yes — climbing out after take-off
- Zenith pass
- No
- Dead-zone wrap
- Yes — pan pre-positioned across the stop
- Duration
- 2:01 (121.2 s)
- Lock
- 53%
Build & tuning
The tracker build that flew this pass and the live settings that mattered, so passes can be compared across changes.
- Build
- 2026-10-15o — sun keep-out by the frame; no video, no pass
- Commit
- cb31ea0
- Node
- v22.22.2
- Camera
- TONGVEO 20x PTZ · 1920×1080 @ 30 fps
- Clip
- 59.1 MB · 121.0 s · offset -1.5 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