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SKW4655 SkyWest

Embraer EMB-175 LL · N82366 · ACV → SFO

· 0:43Quality 72lost lockclip shortside-on

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −68%). 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
53%
First lockfrom target selected
5.4 s
Centring, medianaz / el while locked
0.21° / 0.11°
Centring, 90th pctaz / el while locked
1.30° / 1.12°
Tightest field of viewhorizontal
3.4°
Time to 8°from first lock
4.4 s
Time to tightestfrom first lock
21.6 s
Time at telefield of view ≤ 5.5°
25.0 s
Jitter at teleaz / el, standard deviation
0.18° / 0.15°
Swing at teleaz / el, peak to peak
0.84° / 0.87°
Pan reversalsper 10 s at tele
0.0
Largest pan hopin any 1 s at tele
0.93°
Largest tilt hopin any 1 s at tele
1.31°
Pose error, mediancommand vs camera
0.39°
Largest correctionvision vs prediction
2.66°
Zoom steps
15

Aircraft & route

Flight
SKW4655
Registration
N82366
Type
Embraer EMB-175 LL
Airline
SkyWest
From
ACV · Arcata/Eureka
To
SFO · San Francisco
Ground speed
237 kt
Altitude at closest
10,425 ft
Vertical rate
-1,280 ft/min
Category
A3
ICAO hex
ab3f49

Pass geometry

Max elevation
21.5°
Elevation at start → end
21.5° → 13.8°
Azimuth at start → end
50° NE → 73° ENE
Closest-approach azimuth
50° NE
Minimum slant range
8.7 km
Heading at closest
108° ESE
Aspect at closest
side-on (58°)
Turn
straight (0°)
Departure
No
Zenith pass
No
Dead-zone wrap
No
Duration
0:43 (42.5 s)
Lock
53%

Build & tuning

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

Build
2026-10-16e — A/B mountPrior + candidate diagnostics
Commit
ffe4b92
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
22.1 MB · 22.5 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
-0.1
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