skylight.

UAL2241 United

Airbus A320 232 · N493UA

· 0:17Quality 53lost locknose/tail

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −46%). 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
29%
First lockfrom target selected
12.1 s
Centring, medianaz / el while locked
0.19° / 2.19°
Centring, 90th pctaz / el while locked
0.45° / 3.10°
Tightest field of viewhorizontal
6.9°
Time to 8°from first lock
4.4 s
Time to tightestfrom first lock
4.7 s
Time at telefield of view ≤ 5.5°
0.0 s
Jitter at teleaz / el, standard deviation
—
Swing at teleaz / el, peak to peak
—
Pan reversalsper 10 s at tele
—
Largest pan hopin any 1 s at tele
—
Largest tilt hopin any 1 s at tele
—
Pose error, mediancommand vs camera
1.17°
Largest correctionvision vs prediction
2.74°
Zoom steps
33

Aircraft & route

Flight
UAL2241
Registration
N493UA
Type
Airbus A320 232
Airline
United
From
—
To
—
Ground speed
287 kt
Altitude at closest
11,525 ft
Vertical rate
+64 ft/min
Category
A3
ICAO hex
a61d00

Pass geometry

Max elevation
31.4°
Elevation at start → end
23.2° → 31.4°
Azimuth at start → end
329° NNW → 333° NNW
Closest-approach azimuth
333° NNW
Minimum slant range
6.8 km
Heading at closest
140° SE
Aspect at closest
nose/tail (13°)
Turn
straight (0°)
Departure
No
Zenith pass
No
Dead-zone wrap
No
Duration
0:17 (17.0 s)
Lock
29%

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
8.5 MB · 17.0 s · offset -0.8 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