skylight.

N909MM

Dassault Falcon 2000EX EASy · N909MM

· 0:24Quality 68quartering

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −49%). 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
53%
First lockfrom target selected
9.7 s
Centring, medianaz / el while locked
0.20° / 0.60°
Centring, 90th pctaz / el while locked
0.80° / 1.99°
Tightest field of viewhorizontal
4.1°
Time to 8°from first lock
0.0 s
Time to tightestfrom first lock
10.0 s
Time at telefield of view ≤ 5.5°
6.7 s
Jitter at teleaz / el, standard deviation
0.12° / 0.18°
Swing at teleaz / el, peak to peak
0.45° / 0.79°
Pan reversalsper 10 s at tele
0.0
Largest pan hopin any 1 s at tele
2.38°
Largest tilt hopin any 1 s at tele
0.92°
Pose error, mediancommand vs camera
1.18°
Largest correctionvision vs prediction
1.84°
Zoom steps
19

Aircraft & route

Flight
N909MM
Registration
N909MM
Type
Dassault Falcon 2000EX EASy
Airline
—
From
—
To
—
Ground speed
325 kt
Altitude at closest
11,650 ft
Vertical rate
+1,024 ft/min
Category
A2
ICAO hex
ac91ba

Pass geometry

Max elevation
45.4°
Elevation at start → end
45.4° → 28.8°
Azimuth at start → end
230° SW → 199° SSW
Closest-approach azimuth
230° SW
Minimum slant range
5.0 km
Heading at closest
176° S
Aspect at closest
quartering (54°)
Turn
straight (10°)
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
No
Duration
0:24 (24.0 s)
Lock
53%

Build & tuning

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

Build
2026-10-16e — A/B mountPrior + candidate diagnostics
Commit
ffe4b92
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
11.8 MB · 24.0 s · offset -1.2 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
-0.1
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