skylight.

RGY971

Hawker Beechcraft Corp Hawker 400XP · N975BD

· 1:38Quality 80side-onturned 18°

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −75%). 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
69%
First lockfrom target selected
19.8 s
Centring, medianaz / el while locked
0.16° / 0.12°
Centring, 90th pctaz / el while locked
0.54° / 0.30°
Tightest field of viewhorizontal
3.4°
Time to 8°from first lock
16.0 s
Time to tightestfrom first lock
—
Time at telefield of view ≤ 5.5°
48.8 s
Jitter at teleaz / el, standard deviation
0.20° / 0.15°
Swing at teleaz / el, peak to peak
1.16° / 0.91°
Pan reversalsper 10 s at tele
0.2
Largest pan hopin any 1 s at tele
3.49°
Largest tilt hopin any 1 s at tele
1.67°
Pose error, mediancommand vs camera
0.90°
Largest correctionvision vs prediction
1.39°
Zoom steps
52

Aircraft & route

Flight
RGY971
Registration
N975BD
Type
Hawker Beechcraft Corp Hawker 400XP
Airline
—
From
—
To
—
Ground speed
310 kt
Altitude at closest
13,275 ft
Vertical rate
-1,728 ft/min
Category
A2
ICAO hex
ad9655

Pass geometry

Max elevation
72.8°
Elevation at start → end
23.8° → 34.2°
Azimuth at start → end
327° NNW → 133° SE
Closest-approach azimuth
49° NE
Minimum slant range
4.2 km
Heading at closest
140° SE
Aspect at closest
side-on (89°)
Turn
turned 18°
Departure
No
Zenith pass
No
Dead-zone wrap
No
Duration
1:38 (98.1 s)
Lock
69%

Build & tuning

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

Build
2026-10-15t — vertical rate falls back to geom_rate (server)
Commit
218644c
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
44.2 MB · 93.7 s · offset -1.0 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
-0.09
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