skylight.

FFT1192 Frontier

Airbus A320neo · N435FR · SFO → PHX

· 0:17Quality 4no planelost locklow zoomnose/tail

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
0%
First lockfrom target selected
—
Centring, medianaz / el while locked
—
Centring, 90th pctaz / el while locked
—
Tightest field of viewhorizontal
13.6°
Time to 8°from first lock
—
Time to tightestfrom first lock
—
Time at telefield of view ≤ 5.5°
0.0 s
Jitter at teleaz / el, standard deviation
—
Swing at teleaz / el, peak to peak
—
Pan reversalsper 10 s at tele
—
Largest pan hopin any 1 s at tele
—
Largest tilt hopin any 1 s at tele
—
Pose error, mediancommand vs camera
1.23°
Largest correctionvision vs prediction
0.08°
Zoom steps
19

Aircraft & route

Flight
FFT1192
Registration
N435FR
Type
Airbus A320neo
Airline
Frontier
From
SFO · San Francisco
To
PHX · Phoenix
Ground speed
319 kt
Altitude at closest
11,050 ft
Vertical rate
+1,088 ft/min
Category
A3
ICAO hex
a5363e

Pass geometry

Max elevation
39.6°
Elevation at start → end
39.6° → 27.3°
Azimuth at start → end
162° SSE → 149° SSE
Closest-approach azimuth
162° SSE
Minimum slant range
5.3 km
Heading at closest
131° SE
Aspect at closest
nose/tail (30°)
Turn
straight (0°)
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
No
Duration
0:17 (17.4 s)
Lock
0%

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
8.5 MB · 17.0 s · offset -0.9 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