skylight.

POD3

Bombardier BD-100-1A10 · N251FT

· 1:11Quality 92side-on

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −75%). 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
88%
First lockfrom target selected
5.4 s
Centring, medianaz / el while locked
0.24° / 0.34°
Centring, 90th pctaz / el while locked
1.33° / 2.35°
Tightest field of viewhorizontal
3.4°
Time to 8°from first lock
14.8 s
Time to tightestfrom first lock
41.7 s
Time at telefield of view ≤ 5.5°
46.4 s
Jitter at teleaz / el, standard deviation
0.26° / 0.41°
Swing at teleaz / el, peak to peak
1.12° / 1.80°
Pan reversalsper 10 s at tele
2.4
Largest pan hopin any 1 s at tele
0.86°
Largest tilt hopin any 1 s at tele
3.19°
Pose error, mediancommand vs camera
0.42°
Largest correctionvision vs prediction
3.56°
Zoom steps
43

Aircraft & route

Flight
POD3
Registration
N251FT
Type
Bombardier BD-100-1A10
Airline
—
From
—
To
—
Ground speed
210 kt
Altitude at closest
1,675 ft
Vertical rate
—
Category
A2
ICAO hex
a25bc4

Pass geometry

Max elevation
79.5°
Elevation at start → end
14.8° → 11.8°
Azimuth at start → end
116° ESE → 297° WNW
Closest-approach azimuth
197° SSW
Minimum slant range
504 m
Heading at closest
291° WNW
Aspect at closest
side-on (87°)
Turn
straight (13°)
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
No
Duration
1:11 (70.6 s)
Lock
88%

Build & tuning

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

Build
2026-10-15q — drive speed latched at the lens position; measured speed bytes only; auto-cal keeps gains
Commit
44f2d6a
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
35.0 MB · 70.0 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
-0.11
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