SKW5597 SkyWest
Embraer EMB-175 LR · N121SY · SFO → ?
· 1:36Quality 69lost lockwrap pinnedside-onDead-zone wrap
Software-steadied: the hops of the camera motor are smoothed out (plane wobble −61%). 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
- 38%
- First lockfrom target selected
- 28.9 s
- Centring, medianaz / el while locked
- 0.85° / 0.25°
- Centring, 90th pctaz / el while locked
- 5.04° / 0.60°
- Tightest field of viewhorizontal
- 4.1°
- Time to 8°from first lock
- 5.9 s
- Time to tightestfrom first lock
- 8.3 s
- Time at telefield of view ≤ 5.5°
- 23.6 s
- Jitter at teleaz / el, standard deviation
- 0.94° / 0.21°
- Swing at teleaz / el, peak to peak
- 3.54° / 1.01°
- Pan reversalsper 10 s at tele
- 1.7
- Largest pan hopin any 1 s at tele
- 17.81°
- Largest tilt hopin any 1 s at tele
- 3.49°
- Pose error, mediancommand vs camera
- 1.48°
- Largest correctionvision vs prediction
- 2.17°
- Zoom steps
- 55
Aircraft & route
- Flight
- SKW5597
- Registration
- N121SY
- Type
- Embraer EMB-175 LR
- Airline
- SkyWest
- From
- SFO
- To
- —
- Ground speed
- 286 kt
- Altitude at closest
- 6,700 ft
- Vertical rate
- +2,880 ft/min
- Category
- A3
- ICAO hex
- a05910
Pass geometry
- Max elevation
- 36.8°
- Elevation at start → end
- 18.7° → 15.8°
- Azimuth at start → end
- 342° NNW → 205° SSW
- Closest-approach azimuth
- 273° W
- Minimum slant range
- 3.4 km
- Heading at closest
- 191° S
- Aspect at closest
- side-on (81°)
- Turn
- straight (13°)
- Departure
- Yes — climbing out after take-off
- Zenith pass
- No
- Dead-zone wrap
- Yes — pan pre-positioned across the stop
- Duration
- 1:36 (96.3 s)
- Lock
- 38%
Build & tuning
The tracker build that flew this pass and the live settings that mattered, so passes can be compared across changes.
- Build
- 2026-10-14k — loop integrates real tick time; aim lead −0.2 s
- Commit
- 33c2b35-k
- Node
- v22.22.2
- Camera
- TONGVEO 20x PTZ · 1920×1080 @ 30 fps
- Clip
- 48.1 MB · 96.0 s · offset -0.8 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
- -0.28
- 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