skylight.

EJA950 NetJets

Cessna 680A · N950QS

· 1:45Quality 91side-on

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −81%). 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
89%
First lockfrom target selected
7.9 s
Centring, medianaz / el while locked
0.11° / 0.11°
Centring, 90th pctaz / el while locked
0.30° / 0.28°
Tightest field of viewhorizontal
4.1°
Time to 8°from first lock
2.5 s
Time to tightestfrom first lock
4.5 s
Time at telefield of view ≤ 5.5°
68.0 s
Jitter at teleaz / el, standard deviation
0.17° / 0.16°
Swing at teleaz / el, peak to peak
1.30° / 0.88°
Pan reversalsper 10 s at tele
0.0
Largest pan hopin any 1 s at tele
1.92°
Largest tilt hopin any 1 s at tele
1.08°
Pose error, mediancommand vs camera
0.62°
Largest correctionvision vs prediction
0.61°
Zoom steps
16

Aircraft & route

Flight
EJA950
Registration
N950QS
Type
Cessna 680A
Airline
NetJets
From
—
To
—
Ground speed
254 kt
Altitude at closest
10,175 ft
Vertical rate
-1,856 ft/min
Category
A2
ICAO hex
ad3616

Pass geometry

Max elevation
23.8°
Elevation at start → end
18.3° → 15.8°
Azimuth at start → end
332° NNW → 60° ENE
Closest-approach azimuth
11° N
Minimum slant range
7.5 km
Heading at closest
111° ESE
Aspect at closest
side-on (80°)
Turn
straight (0°)
Departure
No
Zenith pass
No
Dead-zone wrap
No
Duration
1:45 (105.2 s)
Lock
89%

Build & tuning

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

Build
2026-10-14l — vision lock coasts with the plane; a zoom ends a focus drive
Commit
f5b573a
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
52.5 MB · 105.0 s · offset -0.8 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
-0.22
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