Telescope Resolving Power (Dawes/Rayleigh) implementation

Binding contract

This record describes what an executable surface must bind and validate. It does not claim that a public calculator, package, or production route is deployed.

Record owner

Guth Instruments

Lifecycle

verified-clean

Evidence ID

t4-005

Effect

Computation or source lookup only

Input and validation requirements

Zero aperture produces undefined division in both formulas, and the specification does not define automatic selection between Dawes and Rayleigh or make aperture and wavelength units explicit.

Required corrections

No binding erratum is attached to this unique-name record. Implementers must still preserve the declared units, domain, and failure behavior.

Inspectable interface fixture

The sample below is evidence for interface and validation tests, not a production implementation.

{
  "inputs": {
    "aperture_mm": 50,
    "wavelength_nm": 500
  },
  "expected_outputs": {
    "dawes_arcsec": 2.32,
    "rayleigh_arcsec": 2.516433
  },
  "working": "Dawes: 116 / 50 mm = 2.32 arcsec. Rayleigh: 500 nm = 5.00×10^-7 m; 50 mm = 0.050 m; θ = 1.22 × (5.00×10^-7 / 0.050) = 1.22×10^-5 rad; θ = 1.22×10^-5 × 206265 = 2.516433 arcsec."
}

Other records

Sources and evidence

These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.

• VERIFIED_LEDGER.json
• evidence-tranche4/tranche4-results.json