Atmospheric turbulence profiling at the Teide Observatory: comparison and calibration of SODAR and SCIDAR measurements
In order to characterized the vertical atmospheric structure at the Teide Observatory (Tenerife, Spain), we are using two different remote sensing technics...
Atmospherical wavefront phases using the plenoptic sensor (real data)
Plenoptic cameras have been developed the last years as a passive method for 3d scanning, allowing focal stack capture from a single shot. But data recorded by...
We present the kinematical analysis of HI and HII gases within the disk of NGC 3359. There is a strong trend of non-circular gas flow as seen in the velocity...
Observations of the Stokes I and V profiles of the Ca II H and K lines in solar magnetic regions are presented. Least-squares fits of dI/dλ to V are obtained...
This article presents an introduction to optical pumping, atomic polarization and the Hanle effect in weakly magnetized stellar atmospheres. Although the...
This paper highlights very recent advances concerning the identification of new mechanisms that introduce polarization in spectral lines, which turn out to be...
Attempt to detect Aflven waves with Solar Optical Telescope aboard Hinode
Flux tube on the sun may carry linear and torsional Alfven waves generated by photospheric motion. Photospheric motion of 2 km/s would provide magnetic...
Attitude determination for balloon-borne experiments
An attitude determination system for balloon-borne experiments is presented. The system provides pointing information in azimuth and elevation for instruments...