487 citations · 1.3k across the 16 of their papers we have counts for
Showing 2010Show all
3 papers · 1 filter
astro-ph.IM2010★ 52 cited
Evaluation of image-shift measurement algorithms for solar Shack-Hartmann wavefront sensors
Mats G. Löfdahl
Context. Solar Shack-Hartmann wavefront sensors measure differential wavefront tilts as the relative shift between images from different subapertures. There are several methods in…
astro-ph.SR2010★ 26 cited
Striation and convection in penumbral filaments
H. C. Spruit, G. B. Scharmer, M. G. Löfdahl
Observations with the 1-m Swedish Solar Telescope of the flows seen in penumbral filaments are presented. Time sequences of bright filaments show overturning motions strikingly sim…
astro-ph.IM2010★ 36 cited
High-order aberration compensation with Multi-frame Blind Deconvolution and Phase Diversity image restoration techniques
G. B. Scharmer, M. G. Löfdahl, T. I. M. van Werkhoven +1
Context. For accurately measuring intensities and determining magnetic field strengths of small-scale solar (magnetic) structure, knowledge of and compensation for the point spread…