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SWA1170 Southwest Airlines

Boeing 737NG 7H4/W · N439WN

· 2:35Quality 74lost lockside-onDead-zone wrap

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −69%). 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
85%
First lockfrom target selected
13.3 s
Centring, medianaz / el while locked
0.12° / 0.14°
Centring, 90th pctaz / el while locked
0.79° / 0.34°
Tightest field of viewhorizontal
3.4°
Time to 8°from first lock
3.7 s
Time to tightestfrom first lock
83.1 s
Time at telefield of view ≤ 5.5°
101.9 s
Jitter at teleaz / el, standard deviation
0.30° / 0.20°
Swing at teleaz / el, peak to peak
2.87° / 1.12°
Pan reversalsper 10 s at tele
0.8
Largest pan hopin any 1 s at tele
7.28°
Largest tilt hopin any 1 s at tele
4.38°
Pose error, mediancommand vs camera
0.59°
Largest correctionvision vs prediction
1.04°
Zoom steps
65

Aircraft & route

Flight
SWA1170
Registration
N439WN
Type
Boeing 737NG 7H4/W
Airline
Southwest Airlines
From
—
To
—
Ground speed
287 kt
Altitude at closest
10,325 ft
Vertical rate
+3,968 ft/min
Category
A3
ICAO hex
a5468e

Pass geometry

Max elevation
57.2°
Elevation at start → end
16.7° → 14.3°
Azimuth at start → end
29° NNE → 186° S
Closest-approach azimuth
109° ESE
Minimum slant range
3.7 km
Heading at closest
193° SSW
Aspect at closest
side-on (83°)
Turn
straight (0°)
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
Yes — pan pre-positioned across the stop
Duration
2:35 (155.2 s)
Lock
85%

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
77.5 MB · 155.0 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
-0.1
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