skylight.

SWA1170 Southwest Airlines

Boeing 737-8 · N8908Q

· 1:03Quality 54lost lockside-on

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −52%). 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
57%
First lockfrom target selected
5.3 s
Centring, medianaz / el while locked
0.72° / 0.23°
Centring, 90th pctaz / el while locked
2.09° / 1.36°
Tightest field of viewhorizontal
3.4°
Time to 8°from first lock
2.5 s
Time to tightestfrom first lock
—
Time at telefield of view ≤ 5.5°
12.9 s
Jitter at teleaz / el, standard deviation
0.56° / 0.10°
Swing at teleaz / el, peak to peak
1.22° / 0.26°
Pan reversalsper 10 s at tele
3.1
Largest pan hopin any 1 s at tele
2.90°
Largest tilt hopin any 1 s at tele
4.40°
Pose error, mediancommand vs camera
0.90°
Largest correctionvision vs prediction
2.35°
Zoom steps
35

Aircraft & route

Flight
SWA1170
Registration
N8908Q
Type
Boeing 737-8
Airline
Southwest Airlines
From
—
To
—
Ground speed
310 kt
Altitude at closest
10,400 ft
Vertical rate
+2,560 ft/min
Category
A3
ICAO hex
ac48d3

Pass geometry

Max elevation
58.5°
Elevation at start → end
19.6° → 42.1°
Azimuth at start → end
353° N → 221° SW
Closest-approach azimuth
278° W
Minimum slant range
3.8 km
Heading at closest
190° S
Aspect at closest
side-on (88°)
Turn
straight (0°)
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
No
Duration
1:03 (63.2 s)
Lock
57%

Build & tuning

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

Build
2026-10-14i — zoom sigma grows after lock loss (0.1°/s)
Commit
181d1fa+wip
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
31.5 MB · 63.0 s · offset -1.3 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
0.59
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