skylight.

DAL1412 Delta Air Lines

· 1:08Quality 93nose/tail

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −83%). 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
91%
First lockfrom target selected
5.8 s
Centring, medianaz / el while locked
0.10° / 0.11°
Centring, 90th pctaz / el while locked
0.22° / 0.24°
Tightest field of viewhorizontal
3.4°
Time to 8°from first lock
2.0 s
Time to tightestfrom first lock
15.0 s
Time at telefield of view ≤ 5.5°
60.0 s
Jitter at teleaz / el, standard deviation
0.11° / 0.15°
Swing at teleaz / el, peak to peak
0.61° / 0.74°
Pan reversalsper 10 s at tele
0.0
Largest pan hopin any 1 s at tele
1.42°
Largest tilt hopin any 1 s at tele
0.63°
Pose error, mediancommand vs camera
0.28°
Largest correctionvision vs prediction
0.43°
Zoom steps
31

Aircraft & route

Flight
DAL1412
Registration
—
Type
—
Airline
Delta Air Lines
From
—
To
—
Ground speed
247 kt
Altitude at closest
11,475 ft
Vertical rate
0 ft/min
Category
A3
ICAO hex
a3a509

Pass geometry

Max elevation
33.9°
Elevation at start → end
33.9° → 12.7°
Azimuth at start → end
127° SE → 144° SE
Closest-approach azimuth
127° SE
Minimum slant range
6.3 km
Heading at closest
147° SSE
Aspect at closest
nose/tail (20°)
Turn
straight (8°)
Departure
No
Zenith pass
No
Dead-zone wrap
No
Duration
1:08 (68.1 s)
Lock
91%

Build & tuning

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

Build
2026-10-16b — silhouette fallback reach 0.8° + multipart uploads
Commit
2ed816b
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
34.0 MB · 68.0 s · offset -1.4 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
-0.03
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