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Validation Evidence For 0.3.0

Meridian Workflow

The application-controlled meridian workflow was physically exercised on June 10, 2026. The adapter notified the application near +2 degrees, allowed the simulated active frame to complete, changed pier side, reacquired the target, resumed tracking, and returned through HOME to PARK.

Focuser

The shared-bus focuser smoke test passed on June 10, 2026:

  • mount remained PARKED at every checkpoint;
  • a 100-step move completed;
  • the focuser returned exactly to its starting position;
  • a longer move was interrupted with :FQ#;
  • final exact return succeeded;
  • mount communication remained operational.

Mechanical Safety Authority

The counterweight warning approach passed on June 13, 2026:

  • PARK to HOME established trusted HOME authority;
  • a target before the warning boundary remained allowed;
  • pier side, hour angle, counterweight state, margin, warning, and refusal state were reported;
  • final HOME to PARK succeeded.

Stock OnStep Firmware Fallback

The staged Axis-1 proof passed on June 13, 2026:

  • operator-confirmed checkpoints: 60, 120, 150, 170, 178.5 degrees;
  • tracking was off and verified at each checkpoint;
  • natural tracking was armed at Axis-1 178.514 degrees;
  • OnStep autonomously stopped at Axis-1 180.00013 degrees;
  • two stationary non-tracking polls confirmed the firmware stop;
  • the independent raw-stop backstop at 180.25 degrees was not needed;
  • endpoint and complete path were physically confirmed safe;
  • final HOME to PARK succeeded.

The final unattended audit reported:

physical proof: valid=True mode=axis1_fallback reasons=[]
operational stop=4.995deg
firmware fallback=axis1_max at 180.0deg
proven=True physically_safe=True
PASS: unattended tracking firmware safeguard is proven

Independent RA And DEC Motion

The 0.3.0 motion APIs were physically exercised on June 14, 2026.

The bounded correction smoke test:

  • routed PARK to HOME and acquired a safe target;
  • executed center-rate RA east/west and DEC north/south corrections;
  • executed guide-rate RA east and DEC north pulses;
  • sent the matching directional stop after every correction;
  • preserved tracking throughout;
  • returned through HOME to live PARK.

The larger coordinate-path test then proved visually observable independent coordinate movement:

initial:       RA=12.528611h DEC=20deg
RA increase:   RA=13.528611h DEC=20deg
DEC increase:  RA=13.528611h DEC=30deg
RA decrease:   RA=12.528611h DEC=30deg
DEC decrease:  RA=12.528611h DEC=20deg

Every leg stabilized at the requested target within tolerance. The final target matched the initial target, and operator confirmation authorized the final HOME-to-PARK route. The command ended with:

PASS: independent RA/DEC coordinate path completed and final state PARKED.

Before movement, both commands verified Raspberry/OnStep civil time, observer location, and sidereal time while PARKED.

Interpretation

The stock Axis-1 fallback is much later than the normal operational stop. It is accepted only as final crash prevention for the exact validated rig. Normal operation still requests the meridian flip near +2 degrees and stops around +5 degrees while the host application is alive.