skylight.

QTR5Q Qatar Airways

· 1:16Quality 95side-on

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −77%). 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
4.6 s
Centring, medianaz / el while locked
0.10° / 0.10°
Centring, 90th pctaz / el while locked
0.23° / 0.28°
Tightest field of viewhorizontal
3.4°
Time to 8°from first lock
3.3 s
Time to tightestfrom first lock
—
Time at telefield of view ≤ 5.5°
56.2 s
Jitter at teleaz / el, standard deviation
0.13° / 0.17°
Swing at teleaz / el, peak to peak
0.71° / 1.38°
Pan reversalsper 10 s at tele
0.2
Largest pan hopin any 1 s at tele
1.78°
Largest tilt hopin any 1 s at tele
1.21°
Pose error, mediancommand vs camera
0.66°
Largest correctionvision vs prediction
0.45°
Zoom steps
15

Aircraft & route

Flight
QTR5Q
Registration
—
Type
—
Airline
Qatar Airways
From
—
To
—
Ground speed
247 kt
Altitude at closest
11,300 ft
Vertical rate
-1,088 ft/min
Category
A5
ICAO hex
06a121

Pass geometry

Max elevation
27.7°
Elevation at start → end
24.0° → 21.3°
Azimuth at start → end
345° NNW → 59° ENE
Closest-approach azimuth
16° NNE
Minimum slant range
7.4 km
Heading at closest
111° ESE
Aspect at closest
side-on (85°)
Turn
straight (0°)
Departure
No
Zenith pass
No
Dead-zone wrap
No
Duration
1:16 (75.6 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
2026-10-15s — bias fold follows a ramp; no pass below the skyline
Commit
cdd2256
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
35.9 MB · 74.2 s · offset -1.3 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
-0.16
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