21 citations · 21 across the 1 of their papers we have counts for
2 papers
astro-ph.SR2018
Absolute velocity measurements in sunspot umbrae
J. Löhner-Böttcher, W. Schmidt, R. Schlichenmaier +3
In sunspot umbrae, convection is largely suppressed by the strong magnetic field. Previous measurements reported on negligible convective flows in umbral cores. Based on this, nume…
astro-ph.IM2017★ 21 cited
LARS - An Absolute Reference Spectrograph for solar observations, Upgrade from a prototype to a turn-key system
J. Loehner-Boettcher, W. Schmidt, H. -P. Doerr +4
LARS is an Absolute Reference Spectrograph designed for ultra-precise solar observations. The high-resolution echelle spectrograph of the Vacuum Tower Telescope is supported by a s…