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ACA739 Air Canada

Airbus A321 211 · C-GITU · YYZ → SFO

· 1:26Quality 93side-on

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
78%
First lockfrom target selected
8.5 s
Centring, medianaz / el while locked
0.47° / 0.37°
Centring, 90th pctaz / el while locked
2.66° / 1.24°
Tightest field of viewhorizontal
4.1°
Time to 8°from first lock
11.2 s
Time to tightestfrom first lock
13.2 s
Time at telefield of view ≤ 5.5°
18.0 s
Jitter at teleaz / el, standard deviation
0.38° / 0.46°
Swing at teleaz / el, peak to peak
1.52° / 1.85°
Pan reversalsper 10 s at tele
0.0
Largest pan hopin any 1 s at tele
4.11°
Largest tilt hopin any 1 s at tele
2.06°
Pose error, mediancommand vs camera
0.98°
Largest correctionvision vs prediction
1.82°
Zoom steps
33

Aircraft & route

Flight
ACA739
Registration
C-GITU
Type
Airbus A321 211
Airline
Air Canada
From
YYZ · Toronto
To
SFO · San Francisco
Ground speed
280 kt
Altitude at closest
11,125 ft
Vertical rate
-128 ft/min
Category
A3
ICAO hex
c05bcb

Pass geometry

Max elevation
70.3°
Elevation at start → end
21.1° → 40.3°
Azimuth at start → end
328° NNW → 121° ESE
Closest-approach azimuth
50° NE
Minimum slant range
3.6 km
Heading at closest
140° SE
Aspect at closest
side-on (89°)
Turn
straight (0°)
Departure
No
Zenith pass
No
Dead-zone wrap
No
Duration
1:26 (85.6 s)
Lock
78%

Build & tuning

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

Build
2026-10-13c — revert vision zoom pause
Commit
181d1fa+wip
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
42.5 MB · 85.0 s · offset -0.8 s
pursuit
velocity
maxLeadSec
3
panLatencySec
0.6
tiltLatencySec
0.4
rippleDeg
0.5
rippleTeleDeg
0.25
rateFloorDegPerDps
2.5
rateFloorMaxDeg
12
lockedSigmaDeg
0.35
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