skylight.

UAL968 United

Boeing 777 224ER · N78002 · SFO → AMS

· 1:11Quality 78lens stuckside-onOverhead

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −83%). 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
57%
First lockfrom target selected
20.2 s
Centring, medianaz / el while locked
0.49° / 0.45°
Centring, 90th pctaz / el while locked
3.42° / 5.31°
Tightest field of viewhorizontal
5.0°
Time to 8°from first lock
36.2 s
Time to tightestfrom first lock
45.4 s
Time at telefield of view ≤ 5.5°
5.5 s
Jitter at teleaz / el, standard deviation
0.26° / 0.02°
Swing at teleaz / el, peak to peak
0.57° / 0.04°
Pan reversalsper 10 s at tele
5.5
Largest pan hopin any 1 s at tele
0.63°
Largest tilt hopin any 1 s at tele
0.52°
Pose error, mediancommand vs camera
0.74°
Largest correctionvision vs prediction
0.98°
Zoom steps
47

Aircraft & route

Flight
UAL968
Registration
N78002
Type
Boeing 777 224ER (B772)
Airline
United
From
SFO · San Francisco
To
AMS · Amsterdam
Ground speed
183 kt
Altitude at closest
1,200 ft
Vertical rate
+1,920 ft/min
Category
A5
ICAO hex
aa92f9

Pass geometry

Max elevation
73.3°
Elevation at start → end
0.4° → 12.1°
Azimuth at start → end
121° ESE → 297° WNW
Closest-approach azimuth
212° SSW
Minimum slant range
418 m
Heading at closest
298° WNW
Aspect at closest
side-on (87°)
Turn
straight (0°)
Departure
Yes — climbing out after take-off
Zenith pass
Yes — camera flipped over the top
Dead-zone wrap
No
Duration
1:11 (71.1 s)
Lock
57%

Build & tuning

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

Build
2026-10-16g — A/B lockFirst (mount prior on)
Commit
9bdc356
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
36.1 MB · 72.0 s · offset -1.7 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
-0.1
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