skylight.

UAL2764 United

Airbus A319 132 · N882UA · SFO → ?

· 1:15Quality 81side-onDead-zone wrap

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −55%). Download

Trace

Where the aircraft sat in the frame, second by second. Click the chart to jump the video there.

—FOV —az —el —pose —
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
73%
First lockfrom target selected
6.9 s
Centring, medianaz / el while locked
0.92° / 0.39°
Centring, 90th pctaz / el while locked
3.28° / 1.02°
Tightest field of viewhorizontal
4.1°
Time to 8°from first lock
7.5 s
Time to tightestfrom first lock
44.6 s
Time at telefield of view ≤ 5.5°
8.5 s
Jitter at teleaz / el, standard deviation
0.63° / 0.35°
Swing at teleaz / el, peak to peak
3.08° / 1.29°
Pan reversalsper 10 s at tele
1.2
Largest pan hopin any 1 s at tele
9.47°
Largest tilt hopin any 1 s at tele
2.91°
Pose error, mediancommand vs camera
1.30°
Largest correctionvision vs prediction
1.83°
Zoom steps
45

Aircraft & route

Flight
UAL2764
Registration
N882UA
Type
Airbus A319 132
Airline
United
From
SFO
To
—
Ground speed
293 kt
Altitude at closest
8,425 ft
Vertical rate
+3,648 ft/min
Category
A3
ICAO hex
ac2706

Pass geometry

Max elevation
44.1°
Elevation at start → end
19.3° → 24.6°
Azimuth at start → end
340° NNW → 211° SSW
Closest-approach azimuth
271° W
Minimum slant range
3.7 km
Heading at closest
189° S
Aspect at closest
side-on (83°)
Turn
straight (10°)
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
Yes — pan pre-positioned across the stop
Duration
1:15 (75.0 s)
Lock
73%

Build & tuning

The tracker build that flew this pass and the live settings that mattered, so passes can be compared across changes.

Build
2026-10-13i — slower zoom ladder (one rung, 1.5 s)
Commit
181d1fa+wip
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
37.5 MB · 75.0 s · offset -1.3 s
pursuit
velocity
maxLeadSec
3
panLatencySec
0.6
tiltLatencySec
0.4
rippleDeg
0.5
rippleTeleDeg
0.25
rateFloorDegPerDps
2.5
rateFloorMaxDeg
12
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