Astronomical Applications Department, U.S. Naval Observatory - Beam Comp Example (Page 46)

Astronomical Applications Department, U.S. Naval Observatory Beam Comp Example Page 46

OPD

radius (cm)

Wavefront Error (pm)

The coma due to the translation has disappeared, leaving only ~200 picometers of defocus.
This tells us two things: (1) there is a rotation of the primary mirror that compensate for a
lateral displacement, at least as far as the dominant coma aberration is concerned; and (2) coma
is by far the dominant aberration. If we remove the series of defocus terms, we have

>

PlotZernikeWavefront( opd, [Delta,psi], c,
[[0,0],[1,1],[2,0],[4,0],[6,0],[8,0],[10,0],[12,0]],
`pm`, [10*10^(-4),epsilon*arcsec], 100.0, 10.0,
orientation=[-70,65] );