skylight.

UAL1164 United

Boeing 737 MAX 9 · N17593 · SFO → ?

· 1:28Quality 91side-onturned left 31°

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
91%
First lockfrom target selected
5.1 s
Centring, medianaz / el while locked
0.11° / 0.13°
Centring, 90th pctaz / el while locked
0.45° / 0.42°
Tightest field of viewhorizontal
3.4°
Time to 8°from first lock
7.7 s
Time to tightestfrom first lock
—
Time at telefield of view ≤ 5.5°
72.0 s
Jitter at teleaz / el, standard deviation
0.18° / 0.17°
Swing at teleaz / el, peak to peak
1.52° / 0.92°
Pan reversalsper 10 s at tele
0.1
Largest pan hopin any 1 s at tele
3.12°
Largest tilt hopin any 1 s at tele
1.69°
Pose error, mediancommand vs camera
0.71°
Largest correctionvision vs prediction
0.97°
Zoom steps
36

Aircraft & route

Flight
UAL1164
Registration
N17593
Type
Boeing 737 MAX 9
Airline
United
From
SFO
To
—
Ground speed
289 kt
Altitude at closest
7,250 ft
Vertical rate
+2,176 ft/min
Category
A3
ICAO hex
a12f6f

Pass geometry

Max elevation
24.8°
Elevation at start → end
17.2° → 15.8°
Azimuth at start → end
319° NW → 217° SW
Closest-approach azimuth
276° W
Minimum slant range
5.2 km
Heading at closest
195° SSW
Aspect at closest
side-on (81°)
Turn
turned left 31°
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
No
Duration
1:28 (88.0 s)
Lock
91%

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
42.4 MB · 85.3 s · offset -1.1 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