skylight.

QTR73V Qatar Airways

Airbus A350 1041 · A7-ANK · SFO → DOH

· 0:50Quality 73lens stuckside-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
61%
First lockfrom target selected
16.8 s
Centring, medianaz / el while locked
0.79° / 0.74°
Centring, 90th pctaz / el while locked
4.52° / 5.54°
Tightest field of viewhorizontal
8.3°
Time to 8°from first lock
—
Time to tightestfrom first lock
30.9 s
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
1.53°
Largest correctionvision vs prediction
2.84°
Zoom steps
30

Aircraft & route

Flight
QTR73V
Registration
A7-ANK
Type
Airbus A350 1041
Airline
Qatar Airways
From
SFO · San Francisco
To
DOH · Doha
Ground speed
176 kt
Altitude at closest
1,400 ft
Vertical rate
+1,088 ft/min
Category
A5
ICAO hex
06a127

Pass geometry

Max elevation
74.2°
Elevation at start → end
2.1° → 12.9°
Azimuth at start → end
116° ESE → 301° WNW
Closest-approach azimuth
29° NNE
Minimum slant range
475 m
Heading at closest
299° WNW
Aspect at closest
side-on (89°)
Turn
straight (0°)
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
No
Duration
0:50 (49.6 s)
Lock
61%

Build & tuning

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

Build
2026-10-13j — full 3.4 deg tele for slow planes (limit only above 0.5 deg/s)
Commit
181d1fa+wip
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
24.7 MB · 50.0 s · offset -1.7 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