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ASA658 Alaska

Boeing 737NG 990ER/W · N457AS

· 1:40Quality 71low zoomside-onturned right 17°

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −64%). 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
82%
First lockfrom target selected
6.8 s
Centring, medianaz / el while locked
0.34° / 0.61°
Centring, 90th pctaz / el while locked
1.40° / 1.64°
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
0.86°
Largest correctionvision vs prediction
1.52°
Zoom steps
0

Aircraft & route

Flight
ASA658
Registration
N457AS
Type
Boeing 737NG 990ER/W
Airline
Alaska
From
—
To
—
Ground speed
349 kt
Altitude at closest
12,400 ft
Vertical rate
-576 ft/min
Category
A3
ICAO hex
a58c2e

Pass geometry

Max elevation
71.9°
Elevation at start → end
25.7° → 21.9°
Azimuth at start → end
329° NNW → 143° SE
Closest-approach azimuth
49° NE
Minimum slant range
4.0 km
Heading at closest
140° SE
Aspect at closest
side-on (89°)
Turn
turned right 17°
Departure
No
Zenith pass
No
Dead-zone wrap
No
Duration
1:40 (99.8 s)
Lock
82%

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
49.4 MB · 99.0 s · offset -0.8 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