skylight.

SCX395 Sun Country Airlines

Boeing 737NG 8KN/W · N836SY · MSP → SFO

· 1:23Quality 93side-on

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −69%). 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
87%
First lockfrom target selected
7.1 s
Centring, medianaz / el while locked
0.36° / 0.32°
Centring, 90th pctaz / el while locked
1.38° / 0.84°
Tightest field of viewhorizontal
4.1°
Time to 8°from first lock
12.2 s
Time to tightestfrom first lock
16.1 s
Time at telefield of view ≤ 5.5°
23.3 s
Jitter at teleaz / el, standard deviation
0.63° / 0.41°
Swing at teleaz / el, peak to peak
2.45° / 1.69°
Pan reversalsper 10 s at tele
0.9
Largest pan hopin any 1 s at tele
3.76°
Largest tilt hopin any 1 s at tele
2.00°
Pose error, mediancommand vs camera
0.99°
Largest correctionvision vs prediction
1.22°
Zoom steps
61

Aircraft & route

Flight
SCX395
Registration
N836SY
Type
Boeing 737NG 8KN/W
Airline
Sun Country Airlines
From
MSP · Minneapolis
To
SFO · San Francisco
Ground speed
284 kt
Altitude at closest
11,075 ft
Vertical rate
0 ft/min
Category
A3
ICAO hex
ab704b

Pass geometry

Max elevation
69.9°
Elevation at start → end
23.3° → 35.9°
Azimuth at start → end
329° NNW → 123° ESE
Closest-approach azimuth
50° NE
Minimum slant range
3.6 km
Heading at closest
139° SE
Aspect at closest
side-on (89°)
Turn
straight (0°)
Departure
No
Zenith pass
No
Dead-zone wrap
No
Duration
1:23 (82.5 s)
Lock
87%

Build & tuning

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

Build
2026-10-12i — focus jumps only to trusted tele points; rate-steered setpoint; bias learned only when still
Commit
68739f5+wip
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
40.6 MB · 81.0 s · offset -1.1 s
pursuit
velocity
maxLeadSec
3
panLatencySec
0.6
tiltLatencySec
0.4
rippleDeg
0.5
rippleTeleDeg
0.25
rateFloorDegPerDps
2.5
rateFloorMaxDeg
12
lockedSigmaDeg
0.35
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