skylight.

DLH455 Lufthansa

Boeing 747 830 · D-ABYP · SFO → FRA

· 0:46Quality 58side-on

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
45%
First lockfrom target selected
21.6 s
Centring, medianaz / el while locked
0.51° / 0.96°
Centring, 90th pctaz / el while locked
1.92° / 4.52°
Tightest field of viewhorizontal
4.1°
Time to 8°from first lock
—
Time to tightestfrom first lock
—
Time at telefield of view ≤ 5.5°
1.3 s
Jitter at teleaz / el, standard deviation
—
Swing at teleaz / el, peak to peak
—
Pan reversalsper 10 s at tele
0.0
Largest pan hopin any 1 s at tele
—
Largest tilt hopin any 1 s at tele
—
Pose error, mediancommand vs camera
1.74°
Largest correctionvision vs prediction
0.88°
Zoom steps
33

Aircraft & route

Flight
DLH455
Registration
D-ABYP
Type
Boeing 747 830 (B748)
Airline
Lufthansa
From
SFO · San Francisco
To
FRA · Frankfurt am Main
Ground speed
188 kt
Altitude at closest
725 ft
Vertical rate
+1,920 ft/min
Category
A5
ICAO hex
3c4b30

Pass geometry

Max elevation
74.9°
Elevation at start → end
0.1° → 11.6°
Azimuth at start → end
116° ESE → 300° WNW
Closest-approach azimuth
26° NNE
Minimum slant range
258 m
Heading at closest
297° WNW
Aspect at closest
side-on (89°)
Turn
straight (0°)
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
No
Duration
0:46 (46.2 s)
Lock
45%

Build & tuning

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

Build
2026-10-15s — bias fold follows a ramp; no pass below the skyline
Commit
cdd2256
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
21.8 MB · 44.4 s · offset -1.1 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
-0.21
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