ASA521 Alaska
Boeing 737MAX 9 · N920AK
· 1:25Quality 88side-onturned right 17°
Software-steadied: the hops of the camera motor are smoothed out (plane wobble −70%). Download
Trace
Where the aircraft sat in the frame, second by second. Click the chart to jump the video there.
—FOV —az —el —pose —
Loading telemetry…
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
- 71%
- First lockfrom target selected
- 8.1 s
- Centring, medianaz / el while locked
- 0.53° / 0.56°
- Centring, 90th pctaz / el while locked
- 1.44° / 1.07°
- Tightest field of viewhorizontal
- 4.1°
- Time to 8°from first lock
- 4.0 s
- Time to tightestfrom first lock
- 7.4 s
- Time at telefield of view ≤ 5.5°
- 15.3 s
- Jitter at teleaz / el, standard deviation
- 0.49° / 0.44°
- Swing at teleaz / el, peak to peak
- 2.08° / 1.63°
- Pan reversalsper 10 s at tele
- 0.0
- Largest pan hopin any 1 s at tele
- 5.34°
- Largest tilt hopin any 1 s at tele
- 2.35°
- Pose error, mediancommand vs camera
- 0.95°
- Largest correctionvision vs prediction
- 0.96°
- Zoom steps
- 39
Aircraft & route
- Flight
- ASA521
- Registration
- N920AK
- Type
- Boeing 737MAX 9
- Airline
- Alaska
- From
- —
- To
- —
- Ground speed
- 392 kt
- Altitude at closest
- 15,375 ft
- Vertical rate
- -1,792 ft/min
- Category
- A3
- ICAO hex
- acbe34
Pass geometry
- Max elevation
- 75.2°
- Elevation at start → end
- 33.5° → 26.0°
- Azimuth at start → end
- 330° NNW → 142° SE
- Closest-approach azimuth
- 49° NE
- Minimum slant range
- 4.8 km
- Heading at closest
- 140° SE
- Aspect at closest
- side-on (89°)
- Turn
- turned right 17°
- Departure
- No
- Zenith pass
- No
- Dead-zone wrap
- No
- Duration
- 1:25 (85.0 s)
- Lock
- 71%
Build & tuning
The tracker build that flew this pass and the live settings that mattered, so passes can be compared across changes.
- Build
- 2026-10-13g — debanding (archive s2 + live shader)
- Commit
- 181d1fa+wip
- Node
- v22.22.2
- Camera
- TONGVEO 20x PTZ · 1920×1080 @ 30 fps
- Clip
- 42.2 MB · 85.0 s · offset -1.4 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