DAL1559 Delta Air Lines
Airbus A321-271NX · N542DE · SFO → ?
· 0:27Quality 86nose/tailDead-zone wrap
Software-steadied: the hops of the camera motor are smoothed out (plane wobble −72%). 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
- 78%
- First lockfrom target selected
- 4.7 s
- Centring, medianaz / el while locked
- 0.13° / 0.13°
- Centring, 90th pctaz / el while locked
- 0.63° / 0.30°
- Tightest field of viewhorizontal
- 3.4°
- Time to 8°from first lock
- 2.0 s
- Time to tightestfrom first lock
- 6.7 s
- Time at telefield of view ≤ 5.5°
- 20.1 s
- Jitter at teleaz / el, standard deviation
- 0.24° / 0.17°
- Swing at teleaz / el, peak to peak
- 1.07° / 0.67°
- Pan reversalsper 10 s at tele
- 0.0
- Largest pan hopin any 1 s at tele
- 1.05°
- Largest tilt hopin any 1 s at tele
- 0.89°
- Pose error, mediancommand vs camera
- 0.31°
- Largest correctionvision vs prediction
- 0.44°
- Zoom steps
- 14
Aircraft & route
- Flight
- DAL1559
- Registration
- N542DE
- Type
- Airbus A321-271NX
- Airline
- Delta Air Lines
- From
- SFO
- To
- —
- Ground speed
- 313 kt
- Altitude at closest
- 10,650 ft
- Vertical rate
- +1,984 ft/min
- Category
- A3
- ICAO hex
- a6dfaa
Pass geometry
- Max elevation
- 16.4°
- Elevation at start → end
- 16.4° → 12.4°
- Azimuth at start → end
- 204° SSW → 199° SSW
- Closest-approach azimuth
- 204° SSW
- Minimum slant range
- 11.6 km
- Heading at closest
- 189° S
- Aspect at closest
- nose/tail (16°)
- Turn
- straight (14°)
- Departure
- Yes — climbing out after take-off
- Zenith pass
- No
- Dead-zone wrap
- Yes — pan pre-positioned across the stop
- Duration
- 0:27 (27.0 s)
- Lock
- 78%
Build & tuning
The tracker build that flew this pass and the live settings that mattered, so passes can be compared across changes.
- Build
- 2026-10-14n — vision skyline mask 31x cheaper (loop back to ~15 Hz)
- Commit
- af2a83e
- Node
- v22.22.2
- Camera
- TONGVEO 20x PTZ · 1920×1080 @ 30 fps
- Clip
- 13.5 MB · 27.0 s · offset -1.8 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