skylight.

SKW3494 SkyWest

Embraer EMB-175 LR · N197SY · SFO → ?

· 0:57Quality 72low zoomside-onturned 16°Dead-zone wrap

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −65%). 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
90%
First lockfrom target selected
5.4 s
Centring, medianaz / el while locked
0.74° / 0.30°
Centring, 90th pctaz / el while locked
4.02° / 0.77°
Tightest field of viewhorizontal
10.8°
Time to 8°from first lock
—
Time to tightestfrom first lock
0.0 s
Time at telefield of view ≤ 5.5°
0.0 s
Jitter at teleaz / el, standard deviation
—
Swing at teleaz / el, peak to peak
—
Pan reversalsper 10 s at tele
—
Largest pan hopin any 1 s at tele
—
Largest tilt hopin any 1 s at tele
—
Pose error, mediancommand vs camera
1.58°
Largest correctionvision vs prediction
1.35°
Zoom steps
0

Aircraft & route

Flight
SKW3494
Registration
N197SY
Type
Embraer EMB-175 LR
Airline
SkyWest
From
SFO
To
—
Ground speed
295 kt
Altitude at closest
7,700 ft
Vertical rate
+2,688 ft/min
Category
A3
ICAO hex
a183d3

Pass geometry

Max elevation
33.8°
Elevation at start → end
18.5° → 26.6°
Azimuth at start → end
325° NW → 226° SW
Closest-approach azimuth
271° W
Minimum slant range
4.3 km
Heading at closest
184° S
Aspect at closest
side-on (87°)
Turn
turned 16°
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
Yes — pan pre-positioned across the stop
Duration
0:57 (57.4 s)
Lock
90%

Build & tuning

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

Build
2026-10-13g — debanding (archive s2 + live shader)
Commit
181d1fa+wip
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
28.5 MB · 57.0 s · offset -0.9 s
pursuit
velocity
maxLeadSec
3
panLatencySec
0.6
tiltLatencySec
0.4
rippleDeg
0.5
rippleTeleDeg
0.25
rateFloorDegPerDps
2.5
rateFloorMaxDeg
12
lockedSigmaDeg
0.35
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