skylight.

UAL2764 United

Airbus A319 131 · N837UA · SFO → ?

· 1:10Quality 91side-on

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −77%). 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
74%
First lockfrom target selected
4.9 s
Centring, medianaz / el while locked
0.29° / 0.21°
Centring, 90th pctaz / el while locked
2.01° / 1.44°
Tightest field of viewhorizontal
4.1°
Time to 8°from first lock
25.5 s
Time to tightestfrom first lock
27.4 s
Time at telefield of view ≤ 5.5°
18.6 s
Jitter at teleaz / el, standard deviation
0.31° / 0.14°
Swing at teleaz / el, peak to peak
1.96° / 0.76°
Pan reversalsper 10 s at tele
0.0
Largest pan hopin any 1 s at tele
2.20°
Largest tilt hopin any 1 s at tele
1.64°
Pose error, mediancommand vs camera
1.39°
Largest correctionvision vs prediction
2.63°
Zoom steps
57

Aircraft & route

Flight
UAL2764
Registration
N837UA
Type
Airbus A319 131
Airline
United
From
SFO
To
—
Ground speed
266 kt
Altitude at closest
7,400 ft
Vertical rate
+3,968 ft/min
Category
A3
ICAO hex
ab741e

Pass geometry

Max elevation
65.5°
Elevation at start → end
54.5° → 19.5°
Azimuth at start → end
330° NNW → 202° SSW
Closest-approach azimuth
282° WNW
Minimum slant range
2.5 km
Heading at closest
194° SSW
Aspect at closest
side-on (88°)
Turn
straight (2°)
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
No
Duration
1:10 (69.8 s)
Lock
74%

Build & tuning

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

Build
2026-10-12i — focus jumps only to trusted tele points; rate-steered setpoint; bias learned only when still
Commit
68739f5+wip
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
33.0 MB · 68.5 s · offset -1.6 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