56 citations · 426 across the 22 of their papers we have counts for
8 papers · 1 filter
Polarization cross-talk from non-stationary sources of image jitter
R. Casini, A. G. de Wijn
We generalize a previous formulation for the estimation of polarization cross-talk induced by atmospheric seeing to the case of image jitter that must be described as a non-station…
Small Platforms, High Return: The Need to Enhance Investment in Small Satellites for Focused Science, Career Development, and Improved Equity
James Paul Mason, Robert G. Begbie, Maitland Bowen +33
In the next decade, there is an opportunity for very high return on investment of relatively small budgets by elevating the priority of smallsat funding in heliophysics. We've lear…
Design of a Full-Stokes Polarimeter for VLT/X-shooter
Frans Snik, Gerard van Harten, Ramon Navarro +3
X-shooter is one of the most popular instruments at the VLT, offering instantaneous spectroscopy from 300 to 2500 nm. We present the design of a single polarimetric unit at the pol…
Stray light and polarimetry considerations for the COSMO K-Coronagraph
Alfred G. de Wijn, Joan T. Burkepile, Steven Tomczyk +3
The COSMO K-Coronagraph is scheduled to replace the aging Mk4 K-Coronameter at the Mauna Loa Solar Observatory of the National Center for Atmospheric Research in 2013. We present b…
Preliminary design of the Visible Spectro-Polarimeter for the Advanced Technology Solar Telescope
Alfred G. de Wijn, Roberto Casini, Peter G. Nelson +1
The Visible Spectro-Polarimeter (ViSP) is one of the first light instruments for the Advanced Technology Solar Telescope (ATST). It is an echelle spectrograph designed to measure t…
The chromosphere and prominence magnetometer
Alfred G. de Wijn, Christian Bethge, Steven Tomczyk +1
The Chromosphere and Prominence Magnetometer (ChroMag) is conceived with the goal of quantifying the intertwined dynamics and magnetism of the solar chromosphere and in prominences…
Analysis of Seeing-Induced Polarization Cross-Talk and Modulation Scheme Performance
Roberto Casini, Alfred G. de Wijn, Philip G. Judge
We analyze the generation of polarization cross-talk in Stokes polarimeters by atmospheric seeing, and its effects on the noise statistics of spectropolarimetric measurements for b…
Wavelength-Diverse Polarization Modulators for Stokes Polarimetry
Steven Tomczyk, Roberto Casini, Alfred G. de Wijn +1
Information about the three-dimensional structure of solar magnetic fields is encoded in the polarized spectra of solar radiation by a host of physical processes. To extract this i…