UAL1577 United
Boeing 737 MAX 8 · N47370 · SFO → ?
· 1:50Quality 80side-onDead-zone wrap
Software-steadied: the hops of the camera motor are smoothed out (plane wobble −41%). 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
- 75%
- First lockfrom target selected
- 6.9 s
- Centring, medianaz / el while locked
- 0.38° / 0.13°
- Centring, 90th pctaz / el while locked
- 1.68° / 0.40°
- Tightest field of viewhorizontal
- 3.4°
- Time to 8°from first lock
- 5.8 s
- Time to tightestfrom first lock
- 74.3 s
- Time at telefield of view ≤ 5.5°
- 72.4 s
- Jitter at teleaz / el, standard deviation
- 0.56° / 0.23°
- Swing at teleaz / el, peak to peak
- 2.95° / 1.47°
- Pan reversalsper 10 s at tele
- 0.8
- Largest pan hopin any 1 s at tele
- 7.74°
- Largest tilt hopin any 1 s at tele
- 3.85°
- Pose error, mediancommand vs camera
- 0.79°
- Largest correctionvision vs prediction
- 0.62°
- Zoom steps
- 63
Aircraft & route
- Flight
- UAL1577
- Registration
- N47370
- Type
- Boeing 737 MAX 8
- Airline
- United
- From
- SFO
- To
- —
- Ground speed
- 290 kt
- Altitude at closest
- 7,000 ft
- Vertical rate
- +3,072 ft/min
- Category
- A3
- ICAO hex
- a5cfa5
Pass geometry
- Max elevation
- 46.5°
- Elevation at start → end
- 20.4° → 14.3°
- Azimuth at start → end
- 338° NNW → 200° SSW
- Closest-approach azimuth
- 271° W
- Minimum slant range
- 3.0 km
- Heading at closest
- 185° S
- Aspect at closest
- side-on (86°)
- Turn
- straight (14°)
- Departure
- Yes — climbing out after take-off
- Zenith pass
- No
- Dead-zone wrap
- Yes — pan pre-positioned across the stop
- Duration
- 1:50 (110.1 s)
- Lock
- 75%
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
- 55.0 MB · 110.0 s · offset -1.4 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