skylight.

SKW832Y SkyWest

Embraer EMB-175 LR · N197SY · SFO → SNA

· 0:19Quality 57lost lockquartering

3D replay

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
39%
First lockfrom target selected
10.6 s
Centring, medianaz / el while locked
0.32° / 0.38°
Centring, 90th pctaz / el while locked
0.91° / 0.75°
Tightest field of viewhorizontal
4.1°
Time to 8°from first lock
4.8 s
Time to tightestfrom first lock
6.8 s
Time at telefield of view ≤ 5.5°
1.4 s
Jitter at teleaz / el, standard deviation
—
Swing at teleaz / el, peak to peak
—
Pan reversalsper 10 s at tele
0.0
Largest pan hopin any 1 s at tele
1.74°
Largest tilt hopin any 1 s at tele
1.90°
Pose error, mediancommand vs camera
1.48°
Largest correctionvision vs prediction
0.37°
Zoom steps
21

Aircraft & route

Flight
SKW832Y
Registration
N197SY
Type
Embraer EMB-175 LR
Airline
SkyWest
From
SFO · San Francisco
To
SNA · Santa Ana
Ground speed
291 kt
Altitude at closest
6,650 ft
Vertical rate
+2,752 ft/min
Category
A3
ICAO hex
a183d3

Pass geometry

Max elevation
35.1°
Elevation at start → end
19.4° → 35.1°
Azimuth at start → end
340° NNW → 315° NW
Closest-approach azimuth
315° NW
Minimum slant range
3.6 km
Heading at closest
187° S
Aspect at closest
quartering (51°)
Turn
straight (5°)
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
No
Duration
0:19 (18.7 s)
Lock
39%

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
9.5 MB · 19.0 s · offset -1.6 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