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Re: [ATM] 7 inch spherical mirror

Dominic-Luc Webb wrote:
> Interesting points cropping up. Richard, now that you are
> analyzing this, may I ask if you get same amout of coma
> for both sphere and parabola for same aperture stop?
>
> Dominic
ZEMAX indicates that both the paraboloid and the sphere have
the same (Seidel) coma, astigmatism, field curvature, and
distortion, the last being zero.  Again, these are with the
stop coincident with the mirror edge.



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