skylight.

UAL1336 United

Boeing 737NG 824/W · N26208 · SFO → ?

· 1:03Quality 69wrap pinnedside-onDead-zone wrap

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −59%). 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
52%
First lockfrom target selected
6.3 s
Centring, medianaz / el while locked
1.89° / 0.28°
Centring, 90th pctaz / el while locked
3.88° / 1.05°
Tightest field of viewhorizontal
4.1°
Time to 8°from first lock
7.7 s
Time to tightestfrom first lock
22.8 s
Time at telefield of view ≤ 5.5°
8.7 s
Jitter at teleaz / el, standard deviation
0.75° / 0.39°
Swing at teleaz / el, peak to peak
2.79° / 1.25°
Pan reversalsper 10 s at tele
0.0
Largest pan hopin any 1 s at tele
4.87°
Largest tilt hopin any 1 s at tele
0.92°
Pose error, mediancommand vs camera
1.02°
Largest correctionvision vs prediction
1.62°
Zoom steps
65

Aircraft & route

Flight
UAL1336
Registration
N26208
Type
Boeing 737NG 824/W
Airline
United
From
SFO
To
—
Ground speed
303 kt
Altitude at closest
8,750 ft
Vertical rate
+2,496 ft/min
Category
A3
ICAO hex
a288e4

Pass geometry

Max elevation
29.5°
Elevation at start → end
25.5° → 18.7°
Azimuth at start → end
291° WNW → 212° SSW
Closest-approach azimuth
258° WSW
Minimum slant range
5.4 km
Heading at closest
180° S
Aspect at closest
side-on (79°)
Turn
straight (4°)
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
Yes — pan pre-positioned across the stop
Duration
1:03 (63.4 s)
Lock
52%

Build & tuning

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

Build
2026-10-13k — centred plane + noisy motion check no longer demotes the zoom
Commit
181d1fa+wip
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
32.0 MB · 64.0 s · offset -1.6 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