skylight.

UAL1749 United

Boeing 737-8 · N47343 · SFO → OGG

· 0:42Quality 83side-on

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −65%). 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
66%
First lockfrom target selected
7.1 s
Centring, medianaz / el while locked
0.46° / 0.14°
Centring, 90th pctaz / el while locked
1.16° / 0.71°
Tightest field of viewhorizontal
4.1°
Time to 8°from first lock
3.9 s
Time to tightestfrom first lock
13.2 s
Time at telefield of view ≤ 5.5°
10.5 s
Jitter at teleaz / el, standard deviation
0.41° / 0.13°
Swing at teleaz / el, peak to peak
1.91° / 0.55°
Pan reversalsper 10 s at tele
0.0
Largest pan hopin any 1 s at tele
2.55°
Largest tilt hopin any 1 s at tele
0.91°
Pose error, mediancommand vs camera
1.02°
Largest correctionvision vs prediction
0.55°
Zoom steps
41

Aircraft & route

Flight
UAL1749
Registration
N47343
Type
Boeing 737-8
Airline
United
From
SFO · San Francisco
To
OGG · Kahului
Ground speed
262 kt
Altitude at closest
5,275 ft
Vertical rate
+2,752 ft/min
Category
A3
ICAO hex
a5cf3f

Pass geometry

Max elevation
20.5°
Elevation at start → end
18.5° → 17.1°
Azimuth at start → end
325° NW → 269° W
Closest-approach azimuth
302° WNW
Minimum slant range
4.5 km
Heading at closest
228° SW
Aspect at closest
side-on (74°)
Turn
straight (4°)
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
No
Duration
0:42 (41.7 s)
Lock
66%

Build & tuning

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

Build
2026-10-12i — focus jumps only to trusted tele points; rate-steered setpoint; bias learned only when still
Commit
68739f5+wip
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
20.9 MB · 42.0 s · offset -1.7 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