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SKW5440 SkyWest

Embraer EMB-175 LL · N623UX · SFO → ?

· 0:28Quality 81quartering

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −66%). 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
67%
First lockfrom target selected
7.6 s
Centring, medianaz / el while locked
0.19° / 0.18°
Centring, 90th pctaz / el while locked
0.97° / 0.53°
Tightest field of viewhorizontal
4.1°
Time to 8°from first lock
0.8 s
Time to tightestfrom first lock
10.6 s
Time at telefield of view ≤ 5.5°
11.6 s
Jitter at teleaz / el, standard deviation
0.12° / 0.17°
Swing at teleaz / el, peak to peak
0.50° / 0.58°
Pan reversalsper 10 s at tele
0.0
Largest pan hopin any 1 s at tele
2.18°
Largest tilt hopin any 1 s at tele
0.89°
Pose error, mediancommand vs camera
0.75°
Largest correctionvision vs prediction
0.80°
Zoom steps
13

Aircraft & route

Flight
SKW5440
Registration
N623UX
Type
Embraer EMB-175 LL
Airline
SkyWest
From
SFO
To
—
Ground speed
279 kt
Altitude at closest
7,300 ft
Vertical rate
+1,664 ft/min
Category
A3
ICAO hex
a8233a

Pass geometry

Max elevation
38.0°
Elevation at start → end
38.0° → 21.8°
Azimuth at start → end
238° WSW → 210° SSW
Closest-approach azimuth
238° WSW
Minimum slant range
3.7 km
Heading at closest
192° SSW
Aspect at closest
quartering (46°)
Turn
straight (0°)
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
No
Duration
0:28 (28.0 s)
Lock
67%

Build & tuning

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

Build
2026-10-16d — interleaved A/B (experiment mountPrior)
Commit
221ec3f
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
21.8 MB · 28.0 s · offset -1.5 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