skylight.

SWA3190 Southwest Airlines

Boeing 737-8 · N8851Q

· 0:14Quality 40shortnose/tail

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −61%). 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
49%
First lockfrom target selected
3.9 s
Centring, medianaz / el while locked
0.96° / 0.26°
Centring, 90th pctaz / el while locked
2.02° / 2.59°
Tightest field of viewhorizontal
5.8°
Time to 8°from first lock
8.2 s
Time to tightestfrom first lock
8.7 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
0.93°
Largest correctionvision vs prediction
3.39°
Zoom steps
11

Aircraft & route

Flight
SWA3190
Registration
N8851Q
Type
Boeing 737-8
Airline
Southwest Airlines
From
—
To
—
Ground speed
315 kt
Altitude at closest
10,225 ft
Vertical rate
+1,728 ft/min
Category
A3
ICAO hex
ac32f2

Pass geometry

Max elevation
38.4°
Elevation at start → end
38.4° → 27.9°
Azimuth at start → end
156° SSE → 163° SSE
Closest-approach azimuth
156° SSE
Minimum slant range
5.1 km
Heading at closest
174° S
Aspect at closest
nose/tail (18°)
Turn
straight (0°)
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
No
Duration
0:14 (13.6 s)
Lock
49%

Build & tuning

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

Build
2026-10-13l — log why the zoom ladder moved
Commit
181d1fa+wip
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
6.9 MB · 14.0 s · offset -1.3 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