skylight.

DLH455 Lufthansa

Boeing 747 830 · D-ABYJ · SFO → FRA

· 0:52Quality 65nose/tail

3D replay

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
56%
First lockfrom target selected
15.0 s
Centring, medianaz / el while locked
1.72° / 2.00°
Centring, 90th pctaz / el while locked
9.88° / 11.47°
Tightest field of viewhorizontal
13.6°
Time to 8°from first lock
—
Time to tightestfrom first lock
33.1 s
Time at telefield of view ≤ 5.5°
0.0 s
Jitter at teleaz / el, standard deviation
—
Swing at teleaz / el, peak to peak
—
Pan reversalsper 10 s at tele
—
Largest pan hopin any 1 s at tele
—
Largest tilt hopin any 1 s at tele
—
Pose error, mediancommand vs camera
2.13°
Largest correctionvision vs prediction
4.18°
Zoom steps
30

Aircraft & route

Flight
DLH455
Registration
D-ABYJ
Type
Boeing 747 830 (B748)
Airline
Lufthansa
From
SFO · San Francisco
To
FRA · Frankfurt am Main
Ground speed
175 kt
Altitude at closest
825 ft
Vertical rate
+1,664 ft/min
Category
A5
ICAO hex
3c4b2a

Pass geometry

Max elevation
83.7°
Elevation at start → end
0.2° → 13.1°
Azimuth at start → end
116° ESE → 298° WNW
Closest-approach azimuth
35° NE
Minimum slant range
277 m
Heading at closest
297° WNW
Aspect at closest
nose/tail (4°)
Turn
straight (0°)
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
No
Duration
0:52 (52.3 s)
Lock
56%

Build & tuning

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

Build
2026-10-14i — zoom sigma grows after lock loss (0.1°/s)
Commit
181d1fa+wip
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
26.5 MB · 53.0 s · offset -1.8 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
0.59
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