skylight.

UAL1062 United

Boeing 737NG 824/W · N78511 · SFO → ?

· 1:16Quality 82side-onturned left 21°Dead-zone wrap

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −66%). 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
60%
First lockfrom target selected
5.9 s
Centring, medianaz / el while locked
0.66° / 0.33°
Centring, 90th pctaz / el while locked
1.78° / 2.07°
Tightest field of viewhorizontal
4.1°
Time to 8°from first lock
7.8 s
Time to tightestfrom first lock
42.1 s
Time at telefield of view ≤ 5.5°
11.2 s
Jitter at teleaz / el, standard deviation
0.83° / 0.21°
Swing at teleaz / el, peak to peak
3.50° / 0.83°
Pan reversalsper 10 s at tele
0.0
Largest pan hopin any 1 s at tele
5.09°
Largest tilt hopin any 1 s at tele
0.97°
Pose error, mediancommand vs camera
1.41°
Largest correctionvision vs prediction
1.35°
Zoom steps
68

Aircraft & route

Flight
UAL1062
Registration
N78511
Type
Boeing 737NG 824/W
Airline
United
From
SFO
To
—
Ground speed
313 kt
Altitude at closest
8,400 ft
Vertical rate
+2,560 ft/min
Category
A3
ICAO hex
aaa5ae

Pass geometry

Max elevation
27.8°
Elevation at start → end
18.4° → 18.3°
Azimuth at start → end
325° NW → 224° SW
Closest-approach azimuth
273° W
Minimum slant range
5.5 km
Heading at closest
192° SSW
Aspect at closest
side-on (80°)
Turn
turned left 21°
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
Yes — pan pre-positioned across the stop
Duration
1:16 (75.9 s)
Lock
60%

Build & tuning

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

Build
2026-10-13a — zoom ladder waits for the lens to settle before demoting
Commit
181d1fa+wip
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
38.0 MB · 76.0 s · offset -1.3 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