140 citations · 240 across the 31 of their papers we have counts for
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astro-ph.IM2025
Simulation of Time-dependent Karhunen-Loeve Phase Screens: an Ergodic Approach
Richard J. Mathar
Time-dependent phase screens in ground-based astronomy are typically simulated in the so-called frozen-screen approximation by establishing a static phase screen on a large pupil a…
math.CA2025
Chebyshev Expansion of the Zernike Polynomials
Richard J. Mathar
The even and odd Zernike Polynomials R_n^m(x) can be expanded into sums of even and odd Chebyshev Polynomials T_i(x). This manuscript provides closed forms for the rational expansi…
astro-ph.EP2025
Improving radial velocity precision with CARMENES-PLUS:An upgrade of the near-infrared spectrograph cooling system
R. Varas, R. Calvo-Ortega, P. J. Amado +25
CARMENES is a dual-channel high-resolution spectrograph at the 3.5 m Calar Alto telescope designed to detect low-mass planets around late-type dwarfs by measuring their radial velo…