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UAL1702 United

Boeing 737NG 824/W · N78524

· 1:23Quality 86side-on

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −82%). 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
88%
First lockfrom target selected
9.4 s
Centring, medianaz / el while locked
0.13° / 0.11°
Centring, 90th pctaz / el while locked
0.32° / 0.31°
Tightest field of viewhorizontal
3.4°
Time to 8°from first lock
3.8 s
Time to tightestfrom first lock
6.8 s
Time at telefield of view ≤ 5.5°
64.3 s
Jitter at teleaz / el, standard deviation
0.16° / 0.16°
Swing at teleaz / el, peak to peak
0.89° / 0.95°
Pan reversalsper 10 s at tele
0.5
Largest pan hopin any 1 s at tele
3.42°
Largest tilt hopin any 1 s at tele
1.99°
Pose error, mediancommand vs camera
0.50°
Largest correctionvision vs prediction
2.83°
Zoom steps
25

Aircraft & route

Flight
UAL1702
Registration
N78524
Type
Boeing 737NG 824/W
Airline
United
From
—
To
—
Ground speed
253 kt
Altitude at closest
11,500 ft
Vertical rate
0 ft/min
Category
A3
ICAO hex
aaa5d4

Pass geometry

Max elevation
70.4°
Elevation at start → end
17.8° → 70.4°
Azimuth at start → end
326° NNW → 47° NE
Closest-approach azimuth
47° NE
Minimum slant range
3.7 km
Heading at closest
140° SE
Aspect at closest
side-on (88°)
Turn
straight (0°)
Departure
No
Zenith pass
No
Dead-zone wrap
No
Duration
1:23 (82.6 s)
Lock
88%

Build & tuning

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

Build
2026-10-16g — A/B lockFirst (mount prior on)
Commit
9bdc356
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
41.5 MB · 83.0 s · offset -1.6 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
-0.11
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