skylight.

EVA629 EVA Air

Boeing 777 F · B-16785 · SFO → ?

· 0:48Quality 73nose/tail

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
72%
First lockfrom target selected
13.4 s
Centring, medianaz / el while locked
0.99° / 1.36°
Centring, 90th pctaz / el while locked
6.36° / 8.10°
Tightest field of viewhorizontal
8.3°
Time to 8°from first lock
—
Time to tightestfrom first lock
31.7 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
1.04°
Largest correctionvision vs prediction
4.37°
Zoom steps
42

Aircraft & route

Flight
EVA629
Registration
B-16785
Type
Boeing 777 F (B77L)
Airline
EVA Air
From
SFO
To
—
Ground speed
188 kt
Altitude at closest
925 ft
Vertical rate
+2,176 ft/min
Category
A5
ICAO hex
899134

Pass geometry

Max elevation
83.9°
Elevation at start → end
0.2° → 11.8°
Azimuth at start → end
116° ESE → 299° WNW
Closest-approach azimuth
28° NNE
Minimum slant range
307 m
Heading at closest
297° WNW
Aspect at closest
nose/tail (3°)
Turn
straight (0°)
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
No
Duration
0:48 (48.1 s)
Lock
72%

Build & tuning

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

Build
2026-10-15q — drive speed latched at the lens position; measured speed bytes only; auto-cal keeps gains
Commit
44f2d6a
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
24.0 MB · 48.0 s · offset -1.4 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
-0.27
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