ASA688 Alaska
Boeing 737NG 890/W · N527AS
· 1:58Quality 95side-on
Software-steadied: the hops of the camera motor are smoothed out (plane wobble −76%). 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
- 86%
- First lockfrom target selected
- 13.4 s
- Centring, medianaz / el while locked
- 0.12° / 0.14°
- Centring, 90th pctaz / el while locked
- 0.36° / 0.33°
- Tightest field of viewhorizontal
- 3.4°
- Time to 8°from first lock
- 3.7 s
- Time to tightestfrom first lock
- 102.9 s
- Time at telefield of view ≤ 5.5°
- 78.9 s
- Jitter at teleaz / el, standard deviation
- 0.16° / 0.18°
- Swing at teleaz / el, peak to peak
- 1.07° / 0.96°
- Pan reversalsper 10 s at tele
- 0.0
- Largest pan hopin any 1 s at tele
- 4.92°
- Largest tilt hopin any 1 s at tele
- 1.99°
- Pose error, mediancommand vs camera
- 0.72°
- Largest correctionvision vs prediction
- 1.19°
- Zoom steps
- 36
Aircraft & route
- Flight
- ASA688
- Registration
- N527AS
- Type
- Boeing 737NG 890/W
- Airline
- Alaska
- From
- —
- To
- —
- Ground speed
- 241 kt
- Altitude at closest
- 10,575 ft
- Vertical rate
- -2,816 ft/min
- Category
- A3
- ICAO hex
- a6a300
Pass geometry
- Max elevation
- 68.4°
- Elevation at start → end
- 24.9° → 19.0°
- Azimuth at start → end
- 330° NNW → 135° SE
- Closest-approach azimuth
- 47° NE
- Minimum slant range
- 3.4 km
- Heading at closest
- 139° SE
- Aspect at closest
- side-on (88°)
- Turn
- straight (14°)
- Departure
- No
- Zenith pass
- No
- Dead-zone wrap
- No
- Duration
- 1:58 (117.6 s)
- Lock
- 86%
Build & tuning
The tracker build that flew this pass and the live settings that mattered, so passes can be compared across changes.
- Build
- 2026-10-15s — bias fold follows a ramp; no pass below the skyline
- Commit
- cdd2256
- Node
- v22.22.2
- Camera
- TONGVEO 20x PTZ · 1920×1080 @ 30 fps
- Clip
- 57.2 MB · 115.0 s · offset -1.5 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
- -0.16
- 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