492 citations · 641 across the 5 of their papers we have counts for
5 papers
The Wave-Front Correction System for the Sunrise Balloon-Borne Solar Observatory
T. Berkefeld, W. Schmidt, D. Soltau +21
This paper describes the wave-front correction system developed for the Sunrise balloon telescope, and provides information about its in-flight performance. For the correction of l…
Calculation of Spectral Darkening and Visibility Functions for Solar Oscillations
C. Nutto, M. Roth, Y. Zhugzhda +2
Calculations of spectral darkening and visibility functions for the brightness oscillations of the Sun resulting from global solar oscillations are presented. This has been done fo…
GREGOR: the New German Solar Telescope
H. Balthasar, O. von der Lühe, F. Kneer +17
GREGOR is a new open solar telescope with an aperture of 1.5m. It replaces the former 45-cm Gregory Coude telescope on the Canary island Tenerife. The optical concept is that of a…
Observation of a short-lived pattern in the solar chromosphere
F. Wöger, S. Wedemeyer-Böhm, W. Schmidt +1
In this work we investigate the dynamic behavior of inter-network regions of the solar chromosphere. We observed the chromosphere of the quiet Sun using a narrow-band Lyot filter c…
Basic physical parameters of a selected sample of evolved stars
L. da Silva, L. Girardi, L. Pasquini +6
We present the detailed spectroscopic analysis of 72 evolved stars, including the [Fe/H] determination for the whole sample. These metallicities, together with the Teff values and…