UAL45 United
ZRH → SFO
· 1:57Quality 93side-on
Software-steadied: the hops of the camera motor are smoothed out (plane wobble −74%). 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
- 6.7 s
- Centring, medianaz / el while locked
- 0.14° / 0.12°
- Centring, 90th pctaz / el while locked
- 0.40° / 0.36°
- Tightest field of viewhorizontal
- 3.4°
- Time to 8°from first lock
- 10.6 s
- Time to tightestfrom first lock
- 95.2 s
- Time at telefield of view ≤ 5.5°
- 81.2 s
- Jitter at teleaz / el, standard deviation
- 0.17° / 0.20°
- Swing at teleaz / el, peak to peak
- 1.28° / 1.36°
- Pan reversalsper 10 s at tele
- 0.1
- Largest pan hopin any 1 s at tele
- 7.36°
- Largest tilt hopin any 1 s at tele
- 3.04°
- Pose error, mediancommand vs camera
- 0.75°
- Largest correctionvision vs prediction
- 2.23°
- Zoom steps
- 26
Aircraft & route
- Flight
- UAL45
- Registration
- —
- Type
- —
- Airline
- United
- From
- ZRH · Zurich
- To
- SFO · San Francisco
- Ground speed
- 243 kt
- Altitude at closest
- 11,275 ft
- Vertical rate
- -960 ft/min
- Category
- A5
- ICAO hex
- ab0f89
Pass geometry
- Max elevation
- 69.9°
- Elevation at start → end
- 33.3° → 16.3°
- Azimuth at start → end
- 334° NNW → 139° SE
- Closest-approach azimuth
- 48° NE
- Minimum slant range
- 3.7 km
- Heading at closest
- 140° SE
- Aspect at closest
- side-on (88°)
- Turn
- straight (14°)
- Departure
- No
- Zenith pass
- No
- Dead-zone wrap
- No
- Duration
- 1:57 (117.0 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
- 2026-10-15t — vertical rate falls back to geom_rate (server)
- Commit
- 218644c
- Node
- v22.22.2
- Camera
- TONGVEO 20x PTZ · 1920×1080 @ 30 fps
- Clip
- 55.3 MB · 111.3 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
- -0.03
- 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