Polarization modulators based on Liquid Crystal Variable Retarders (LCVRs) are envisaged as a powerful and versatile solution whose main advantage is the lack of mechanisms (i.e. rotating plates). An extensive test campaign has been carried out in order to demonstrate the feasibility of the LCVRs for the IMaX/SUNRISE magnetograph in environmental

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The luminous infrared galaxy Arp 299 (IC 694 + NGC 3690) is studied using optical integral field spectroscopy obtained with the INTEGRAL system, together with archival Hubble Space Telescope WFPC2 and NICMOS images. The stellar and ionized gas morphology shows λ-dependent variations due to the combined effects of the dust internal extinction and

Velocity and magnetic fields are derived from subtracting intensity measurements made at different times and, normally, under different conditions. This differential imaging property puts important requirements on image stabilization. Examples of the implications for the Solar Orbiter mission are discussed. Similarly, we review how spectral and

A detailed imaging analysis of the globular cluster (GC) system of the Sombrero galaxy (NGC 4594) has been accomplished using a six-image mosaic from the Hubble Space Telescope Advanced Camera for Surveys. The quality of the data is such that contamination by foreground stars and background galaxies is negligible for all but the faintest 5% of the

The galaxy group Klemola 13 is composed of at least seven independent members including the starburst galaxy Tol 9. Our analysis using optical/NIR and Ha imaging together with optical spectroscopy suggests that it is interacting with some members of the group. We propose H I observations of Klemola 13 in order to map the distribution and kinematics