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ASA1330 Alaska

Boeing 737 MAX 8 · N839AK · SFO → ?

· 1:42Quality 94side-on

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −78%). 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
95%
First lockfrom target selected
4.8 s
Centring, medianaz / el while locked
0.09° / 0.12°
Centring, 90th pctaz / el while locked
0.26° / 0.31°
Tightest field of viewhorizontal
3.4°
Time to 8°from first lock
5.7 s
Time to tightestfrom first lock
66.9 s
Time at telefield of view ≤ 5.5°
90.0 s
Jitter at teleaz / el, standard deviation
0.15° / 0.15°
Swing at teleaz / el, peak to peak
0.98° / 0.90°
Pan reversalsper 10 s at tele
0.0
Largest pan hopin any 1 s at tele
2.57°
Largest tilt hopin any 1 s at tele
1.59°
Pose error, mediancommand vs camera
0.64°
Largest correctionvision vs prediction
1.39°
Zoom steps
31

Aircraft & route

Flight
ASA1330
Registration
N839AK
Type
Boeing 737 MAX 8
Airline
Alaska
From
SFO
To
—
Ground speed
294 kt
Altitude at closest
7,725 ft
Vertical rate
+2,688 ft/min
Category
A3
ICAO hex
ab79d3

Pass geometry

Max elevation
26.5°
Elevation at start → end
20.4° → 14.6°
Azimuth at start → end
309° NW → 207° SSW
Closest-approach azimuth
264° W
Minimum slant range
5.2 km
Heading at closest
186° S
Aspect at closest
side-on (78°)
Turn
straight (2°)
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
No
Duration
1:42 (101.5 s)
Lock
95%

Build & tuning

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

Build
2026-10-15t — vertical rate falls back to geom_rate (server)
Commit
218644c
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
50.3 MB · 102.0 s · offset -1.4 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
-0.03
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