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SKW5904 SkyWest

Bombardier CRJ 200ER · N933EV · SFO → FAT

· 0:22Quality 84side-on

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −84%). 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
77%
First lockfrom target selected
5.1 s
Centring, medianaz / el while locked
0.15° / 0.12°
Centring, 90th pctaz / el while locked
0.48° / 0.82°
Tightest field of viewhorizontal
4.1°
Time to 8°from first lock
4.6 s
Time to tightestfrom first lock
6.5 s
Time at telefield of view ≤ 5.5°
11.0 s
Jitter at teleaz / el, standard deviation
0.13° / 0.10°
Swing at teleaz / el, peak to peak
0.62° / 0.40°
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
0.46°
Pose error, mediancommand vs camera
0.52°
Largest correctionvision vs prediction
1.29°
Zoom steps
23

Aircraft & route

Flight
SKW5904
Registration
N933EV
Type
Bombardier CRJ 200ER
Airline
SkyWest
From
SFO · San Francisco
To
FAT · Fresno
Ground speed
247 kt
Altitude at closest
10,275 ft
Vertical rate
—
Category
A2
ICAO hex
acf146

Pass geometry

Max elevation
20.8°
Elevation at start → end
20.8° → 17.3°
Azimuth at start → end
40° NE → 55° NE
Closest-approach azimuth
40° NE
Minimum slant range
8.8 km
Heading at closest
107° ESE
Aspect at closest
side-on (67°)
Turn
straight (0°)
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
No
Duration
0:22 (21.6 s)
Lock
77%

Build & tuning

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

Build
2026-10-14n — vision skyline mask 31x cheaper (loop back to ~15 Hz)
Commit
af2a83e
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
11.0 MB · 22.0 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
-0.16
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