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N661GT

Gulfstream Aerospace G650 ER · N661GT

· 3:00Quality 88side-onturned 38°

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −79%). 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
96%
First lockfrom target selected
6.9 s
Centring, medianaz / el while locked
0.11° / 0.11°
Centring, 90th pctaz / el while locked
0.34° / 0.28°
Tightest field of viewhorizontal
3.4°
Time to 8°from first lock
4.7 s
Time to tightestfrom first lock
9.4 s
Time at telefield of view ≤ 5.5°
147.7 s
Jitter at teleaz / el, standard deviation
0.19° / 0.16°
Swing at teleaz / el, peak to peak
1.84° / 1.10°
Pan reversalsper 10 s at tele
0.8
Largest pan hopin any 1 s at tele
4.88°
Largest tilt hopin any 1 s at tele
1.82°
Pose error, mediancommand vs camera
0.51°
Largest correctionvision vs prediction
1.29°
Zoom steps
34

Aircraft & route

Flight
N661GT
Registration
N661GT
Type
Gulfstream Aerospace G650 ER
Airline
—
From
—
To
—
Ground speed
299 kt
Altitude at closest
13,050 ft
Vertical rate
-1,088 ft/min
Category
A3
ICAO hex
a8b898

Pass geometry

Max elevation
72.6°
Elevation at start → end
18.0° → 12.7°
Azimuth at start → end
329° NNW → 148° SSE
Closest-approach azimuth
49° NE
Minimum slant range
4.2 km
Heading at closest
140° SE
Aspect at closest
side-on (89°)
Turn
turned 38°
Departure
No
Zenith pass
No
Dead-zone wrap
No
Duration
3:00 (179.7 s)
Lock
96%

Build & tuning

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

Build
2026-10-16i — lock-first on; shadow silhouette sky-masked
Commit
5610684
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
10.2 MB · 180.0 s · offset -1.6 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
-0.19
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