skylight.

SKW5571 SkyWest

Embraer EMB-175 LR · N200SY · SFO → ?

· 2:27Quality 84lost lockside-onturned left 53°

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −72%). 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
75%
First lockfrom target selected
13.1 s
Centring, medianaz / el while locked
0.14° / 0.11°
Centring, 90th pctaz / el while locked
0.66° / 0.35°
Tightest field of viewhorizontal
3.4°
Time to 8°from first lock
11.6 s
Time to tightestfrom first lock
61.2 s
Time at telefield of view ≤ 5.5°
97.7 s
Jitter at teleaz / el, standard deviation
0.22° / 0.19°
Swing at teleaz / el, peak to peak
2.50° / 1.21°
Pan reversalsper 10 s at tele
0.3
Largest pan hopin any 1 s at tele
3.74°
Largest tilt hopin any 1 s at tele
3.22°
Pose error, mediancommand vs camera
0.43°
Largest correctionvision vs prediction
1.28°
Zoom steps
58

Aircraft & route

Flight
SKW5571
Registration
N200SY
Type
Embraer EMB-175 LR
Airline
SkyWest
From
SFO
To
—
Ground speed
288 kt
Altitude at closest
7,100 ft
Vertical rate
+2,880 ft/min
Category
A3
ICAO hex
a193aa

Pass geometry

Max elevation
50.5°
Elevation at start → end
19.1° → 11.2°
Azimuth at start → end
346° NNW → 193° SSW
Closest-approach azimuth
274° W
Minimum slant range
2.8 km
Heading at closest
189° S
Aspect at closest
side-on (86°)
Turn
turned left 53°
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
No
Duration
2:27 (147.2 s)
Lock
75%

Build & tuning

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

Build
2026-10-15r — keep the target past the sun; paced speed re-latch
Commit
05024bb
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
68.0 MB · 145.0 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
-0.27
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