ASA657 Alaska
Boeing 737NG 990ER/W · N237AK · JFK → SFO
· 0:41Quality 86quarteringturned right 15°
Software-steadied: the hops of the camera motor are smoothed out (plane wobble −69%). 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
- 72%
- First lockfrom target selected
- 5.7 s
- Centring, medianaz / el while locked
- 0.39° / 0.30°
- Centring, 90th pctaz / el while locked
- 0.98° / 1.02°
- Tightest field of viewhorizontal
- 4.1°
- Time to 8°from first lock
- 4.9 s
- Time to tightestfrom first lock
- 25.9 s
- Time at telefield of view ≤ 5.5°
- 15.1 s
- Jitter at teleaz / el, standard deviation
- 0.29° / 0.26°
- Swing at teleaz / el, peak to peak
- 1.05° / 1.09°
- Pan reversalsper 10 s at tele
- 0.0
- Largest pan hopin any 1 s at tele
- 4.21°
- Largest tilt hopin any 1 s at tele
- 1.77°
- Pose error, mediancommand vs camera
- 0.78°
- Largest correctionvision vs prediction
- 0.82°
- Zoom steps
- 38
Aircraft & route
- Flight
- ASA657
- Registration
- N237AK
- Type
- Boeing 737NG 990ER/W
- Airline
- Alaska
- From
- JFK · New York
- To
- SFO · San Francisco
- Ground speed
- 363 kt
- Altitude at closest
- 12,275 ft
- Vertical rate
- -576 ft/min
- Category
- A3
- ICAO hex
- a2228b
Pass geometry
- Max elevation
- 64.9°
- Elevation at start → end
- 64.9° → 24.0°
- Azimuth at start → end
- 95° E → 141° SE
- Closest-approach azimuth
- 95° E
- Minimum slant range
- 4.1 km
- Heading at closest
- 141° SE
- Aspect at closest
- quartering (46°)
- Turn
- turned right 15°
- Departure
- No
- Zenith pass
- No
- Dead-zone wrap
- No
- Duration
- 0:41 (40.7 s)
- Lock
- 72%
Build & tuning
The tracker build that flew this pass and the live settings that mattered, so passes can be compared across changes.
- Build
- 2026-10-12i — focus jumps only to trusted tele points; rate-steered setpoint; bias learned only when still
- Commit
- 68739f5+wip
- Node
- v22.22.2
- Camera
- TONGVEO 20x PTZ · 1920×1080 @ 30 fps
- Clip
- 19.2 MB · 38.9 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