skylight.

SWA1085 Southwest Airlines

Boeing 737NG 7H4/W · N207WN · SFO → ?

· 1:42Quality 74lost lockside-on

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −63%). 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
66%
First lockfrom target selected
4.9 s
Centring, medianaz / el while locked
0.11° / 0.12°
Centring, 90th pctaz / el while locked
0.45° / 0.51°
Tightest field of viewhorizontal
3.4°
Time to 8°from first lock
4.0 s
Time to tightestfrom first lock
42.0 s
Time at telefield of view ≤ 5.5°
75.9 s
Jitter at teleaz / el, standard deviation
0.20° / 0.18°
Swing at teleaz / el, peak to peak
2.51° / 1.19°
Pan reversalsper 10 s at tele
0.5
Largest pan hopin any 1 s at tele
8.60°
Largest tilt hopin any 1 s at tele
4.24°
Pose error, mediancommand vs camera
0.72°
Largest correctionvision vs prediction
0.87°
Zoom steps
23

Aircraft & route

Flight
SWA1085
Registration
N207WN
Type
Boeing 737NG 7H4/W
Airline
Southwest Airlines
From
SFO
To
—
Ground speed
291 kt
Altitude at closest
6,975 ft
Vertical rate
+2,560 ft/min
Category
A3
ICAO hex
a1ae05

Pass geometry

Max elevation
34.3°
Elevation at start → end
18.6° → 16.2°
Azimuth at start → end
331° NNW → 203° SSW
Closest-approach azimuth
272° W
Minimum slant range
3.8 km
Heading at closest
187° S
Aspect at closest
side-on (85°)
Turn
straight (4°)
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
No
Duration
1:42 (102.2 s)
Lock
66%

Build & tuning

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

Build
2026-10-15s — bias fold follows a ramp; no pass below the skyline
Commit
cdd2256
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
47.7 MB · 98.0 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