Out-of-focus holography at the Effelsberg telescope - Systematic measurements of the surface of a 100 m telescope using OOF holography

Open Access

Fig. A.1

Zernike circle polynomials. This is the polynomial and naming convention used throughout the presented analysis. The largest amplitude values are yellow and the lower ones are purple. Amplitudes oscillate between one and minus one. The Zernike circle polynomials $U_{n}^{ℓ} (ϱ, ϑ)$ $U_n^\ell (\varrho ,\vartheta )$ are up to a radial order of n = 5; i.e., 21 polynomials.

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