ASA657 Alaska
Boeing 737NG 8FH/W · N549AS · JFK → SFO
· 0:25Quality 64nose/tail
Software-steadied: the hops of the camera motor are smoothed out (plane wobble −60%). 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
- 69%
- First lockfrom target selected
- 3.1 s
- Centring, medianaz / el while locked
- 0.57° / 0.41°
- Centring, 90th pctaz / el while locked
- 1.28° / 2.05°
- Tightest field of viewhorizontal
- 4.1°
- Time to 8°from first lock
- 12.4 s
- Time to tightestfrom first lock
- 15.1 s
- Time at telefield of view ≤ 5.5°
- 5.4 s
- Jitter at teleaz / el, standard deviation
- 0.12° / 0.12°
- Swing at teleaz / el, peak to peak
- 0.25° / 0.26°
- Pan reversalsper 10 s at tele
- 0.0
- Largest pan hopin any 1 s at tele
- 1.34°
- Largest tilt hopin any 1 s at tele
- 1.07°
- Pose error, mediancommand vs camera
- 1.08°
- Largest correctionvision vs prediction
- 1.57°
- Zoom steps
- 16
Aircraft & route
- Flight
- ASA657
- Registration
- N549AS
- Type
- Boeing 737NG 8FH/W
- Airline
- Alaska
- From
- JFK · New York
- To
- SFO · San Francisco
- Ground speed
- 340 kt
- Altitude at closest
- 12,250 ft
- Vertical rate
- -640 ft/min
- Category
- A3
- ICAO hex
- a6f96c
Pass geometry
- Max elevation
- 46.8°
- Elevation at start → end
- 46.8° → 26.1°
- Azimuth at start → end
- 122° ESE → 139° SE
- Closest-approach azimuth
- 122° ESE
- Minimum slant range
- 5.1 km
- Heading at closest
- 146° SE
- Aspect at closest
- nose/tail (25°)
- Turn
- straight (11°)
- Departure
- No
- Zenith pass
- No
- Dead-zone wrap
- No
- Duration
- 0:25 (25.1 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
- 2026-10-13j — full 3.4 deg tele for slow planes (limit only above 0.5 deg/s)
- Commit
- 181d1fa+wip
- Node
- v22.22.2
- Camera
- TONGVEO 20x PTZ · 1920×1080 @ 30 fps
- Clip
- 10.9 MB · 22.4 s · offset -1.1 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