skylight.

FLE1848 Flair Airlines

Boeing 737MAX 8 · C-FFLZ · YVR → SFO

· 2:26Quality 85side-onturned right 17°

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
6.3 s
Centring, medianaz / el while locked
0.11° / 0.11°
Centring, 90th pctaz / el while locked
0.29° / 0.27°
Tightest field of viewhorizontal
3.4°
Time to 8°from first lock
3.0 s
Time to tightestfrom first lock
5.9 s
Time at telefield of view ≤ 5.5°
128.8 s
Jitter at teleaz / el, standard deviation
0.17° / 0.15°
Swing at teleaz / el, peak to peak
1.13° / 0.87°
Pan reversalsper 10 s at tele
0.4
Largest pan hopin any 1 s at tele
4.81°
Largest tilt hopin any 1 s at tele
1.96°
Pose error, mediancommand vs camera
0.60°
Largest correctionvision vs prediction
1.65°
Zoom steps
14

Aircraft & route

Flight
FLE1848
Registration
C-FFLZ
Type
Boeing 737MAX 8
Airline
Flair Airlines
From
YVR · Vancouver
To
SFO · San Francisco
Ground speed
253 kt
Altitude at closest
11,500 ft
Vertical rate
0 ft/min
Category
A3
ICAO hex
c00e6c

Pass geometry

Max elevation
70.4°
Elevation at start → end
18.1° → 22.9°
Azimuth at start → end
326° NNW → 136° SE
Closest-approach azimuth
49° NE
Minimum slant range
3.7 km
Heading at closest
140° SE
Aspect at closest
side-on (90°)
Turn
turned right 17°
Departure
No
Zenith pass
No
Dead-zone wrap
No
Duration
2:26 (145.8 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
2026-10-16g — A/B lockFirst (mount prior on)
Commit
9bdc356
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
73.0 MB · 146.0 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
-0.11
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