The Rayleigh Criterion · Angular Resolution
unseel.com · θ = 1.22 λ/D · Airy disks · diffraction limit
Separation wide
θ = 1.22 λ/D
Stage
Star A (point source)
Star B (point source)
Circular aperture (D)
Resolved / merged image
Unseel.com · The Rayleigh Criterion