skylight.

ITY640 ITA Airways

FCO → SFO

· 0:13Quality 40shortlost lockclip shortquartering

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
34%
First lockfrom target selected
5.2 s
Centring, medianaz / el while locked
1.24° / 0.94°
Centring, 90th pctaz / el while locked
1.48° / 1.34°
Tightest field of viewhorizontal
3.4°
Time to 8°from first lock
3.7 s
Time to tightestfrom first lock
—
Time at telefield of view ≤ 5.5°
6.1 s
Jitter at teleaz / el, standard deviation
0.04° / 0.07°
Swing at teleaz / el, peak to peak
0.08° / 0.13°
Pan reversalsper 10 s at tele
1.6
Largest pan hopin any 1 s at tele
5.34°
Largest tilt hopin any 1 s at tele
1.95°
Pose error, mediancommand vs camera
3.43°
Largest correctionvision vs prediction
1.40°
Zoom steps
25

Aircraft & route

Flight
ITY640
Registration
—
Type
—
Airline
ITA Airways
From
FCO · Rome
To
SFO · San Francisco
Ground speed
268 kt
Altitude at closest
8,325 ft
Vertical rate
-2,432 ft/min
Category
A5
ICAO hex
4caeb3

Pass geometry

Max elevation
16.5°
Elevation at start → end
16.5° → 13.8°
Azimuth at start → end
60° ENE → 69° ENE
Closest-approach azimuth
60° ENE
Minimum slant range
8.9 km
Heading at closest
113° ESE
Aspect at closest
quartering (53°)
Turn
straight (0°)
Departure
No
Zenith pass
No
Dead-zone wrap
No
Duration
0:13 (13.1 s)
Lock
34%

Build & tuning

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

Build
2026-10-16c — mount prior carried to the next target (silhouette reach reverted)
Commit
8649c7d
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
7.2 MB · 7.6 s · offset -1.2 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