ASA1393 Alaska
Boeing 737NG 990ER/W · N481AS · SJD → SFO
· 1:15Quality 84side-onturned left 22°
Software-steadied: the hops of the camera motor are smoothed out (plane wobble −80%). Download
Trace
Where the aircraft sat in the frame, second by second. Click the chart to jump the video there.
—FOV —az —el —pose —
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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
- 89%
- First lockfrom target selected
- 8.4 s
- Centring, medianaz / el while locked
- 0.09° / 0.15°
- Centring, 90th pctaz / el while locked
- 0.25° / 0.30°
- Tightest field of viewhorizontal
- 4.1°
- Time to 8°from first lock
- 3.9 s
- Time to tightestfrom first lock
- 6.5 s
- Time at telefield of view ≤ 5.5°
- 60.5 s
- Jitter at teleaz / el, standard deviation
- 0.13° / 0.18°
- Swing at teleaz / el, peak to peak
- 0.74° / 0.75°
- Pan reversalsper 10 s at tele
- 0.0
- Largest pan hopin any 1 s at tele
- 1.59°
- Largest tilt hopin any 1 s at tele
- 0.84°
- Pose error, mediancommand vs camera
- 0.61°
- Largest correctionvision vs prediction
- 1.31°
- Zoom steps
- 23
Aircraft & route
- Flight
- ASA1393
- Registration
- N481AS
- Type
- Boeing 737NG 990ER/W
- Airline
- Alaska
- From
- SJD · San José del Cabo
- To
- SFO · San Francisco
- Ground speed
- 285 kt
- Altitude at closest
- 10,200 ft
- Vertical rate
- -1,472 ft/min
- Category
- A3
- ICAO hex
- a5ec61
Pass geometry
- Max elevation
- 25.7°
- Elevation at start → end
- 17.7° → 23.2°
- Azimuth at start → end
- 327° NNW → 39° NE
- Closest-approach azimuth
- 11° N
- Minimum slant range
- 7.1 km
- Heading at closest
- 108° ESE
- Aspect at closest
- side-on (83°)
- Turn
- turned left 22°
- Departure
- No
- Zenith pass
- No
- Dead-zone wrap
- No
- Duration
- 1:15 (74.6 s)
- Lock
- 89%
Build & tuning
The tracker build that flew this pass and the live settings that mattered, so passes can be compared across changes.
- Build
- 2026-10-16i — lock-first on; shadow silhouette sky-masked
- Commit
- 5610684
- Node
- v22.22.2
- Camera
- TONGVEO 20x PTZ · 1920×1080 @ 30 fps
- Clip
- 8.1 MB · 75.0 s · offset -1.4 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
- -0.19
- 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