skylight.

FFT1160 Frontier

Airbus A321-271NX · N616FR · SFO → ?

· 0:44Quality 93side-on

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −51%). 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
83%
First lockfrom target selected
8.2 s
Centring, medianaz / el while locked
0.14° / 0.16°
Centring, 90th pctaz / el while locked
0.80° / 0.41°
Tightest field of viewhorizontal
3.4°
Time to 8°from first lock
8.9 s
Time to tightestfrom first lock
—
Time at telefield of view ≤ 5.5°
28.9 s
Jitter at teleaz / el, standard deviation
0.12° / 0.20°
Swing at teleaz / el, peak to peak
0.70° / 0.93°
Pan reversalsper 10 s at tele
0.0
Largest pan hopin any 1 s at tele
1.59°
Largest tilt hopin any 1 s at tele
1.17°
Pose error, mediancommand vs camera
0.79°
Largest correctionvision vs prediction
0.65°
Zoom steps
41

Aircraft & route

Flight
FFT1160
Registration
N616FR
Type
Airbus A321-271NX
Airline
Frontier
From
SFO
To
—
Ground speed
328 kt
Altitude at closest
11,450 ft
Vertical rate
+960 ft/min
Category
A3
ICAO hex
a80595

Pass geometry

Max elevation
20.0°
Elevation at start → end
16.5° → 20.0°
Azimuth at start → end
250° WSW → 211° SSW
Closest-approach azimuth
217° SW
Minimum slant range
10.2 km
Heading at closest
131° SE
Aspect at closest
side-on (86°)
Turn
straight (0°)
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
No
Duration
0:44 (44.2 s)
Lock
83%

Build & tuning

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

Build
2026-10-16h — lock-first association on (A/B −40% tele gaps)
Commit
dfc3684
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
22.0 MB · 44.0 s · offset -1.1 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
-0.24
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