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UPS9847 UPS

Boeing 767 34AF/W · N311UP

· 1:16Quality 94side-on

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −78%). 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
90%
First lockfrom target selected
4.5 s
Centring, medianaz / el while locked
0.12° / 0.12°
Centring, 90th pctaz / el while locked
0.35° / 0.28°
Tightest field of viewhorizontal
3.4°
Time to 8°from first lock
5.2 s
Time to tightestfrom first lock
—
Time at telefield of view ≤ 5.5°
61.4 s
Jitter at teleaz / el, standard deviation
0.17° / 0.14°
Swing at teleaz / el, peak to peak
0.95° / 0.73°
Pan reversalsper 10 s at tele
0.2
Largest pan hopin any 1 s at tele
3.75°
Largest tilt hopin any 1 s at tele
1.93°
Pose error, mediancommand vs camera
1.08°
Largest correctionvision vs prediction
2.54°
Zoom steps
16

Aircraft & route

Flight
UPS9847
Registration
N311UP
Type
Boeing 767 34AF/W
Airline
UPS
From
—
To
—
Ground speed
353 kt
Altitude at closest
11,800 ft
Vertical rate
+1,984 ft/min
Category
A5
ICAO hex
a34c58

Pass geometry

Max elevation
45.0°
Elevation at start → end
24.7° → 27.4°
Azimuth at start → end
327° NNW → 202° SSW
Closest-approach azimuth
265° W
Minimum slant range
5.1 km
Heading at closest
177° S
Aspect at closest
side-on (88°)
Turn
straight (0°)
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
No
Duration
1:16 (76.0 s)
Lock
90%

Build & tuning

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

Build
2026-10-15t — vertical rate falls back to geom_rate (server)
Commit
218644c
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
38.2 MB · 77.0 s · offset -1.7 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
-0.03
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