Critical Design Review Completed!

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Wednesday, September 23, 2015

In summer of 2015, a team of scientists and engineers from the High Altitude Observatory successfully completed a Critical Design Review (CDR) for the Visible Spectro-Polarimeter (ViSP).

ViSP Rendering from CDR ME Design Report image
ViSP Rendering from CDR ME Design Report

The ViSP instrument is one of four first-light instruments being developed for the Daniel K. Inouye Solar Telescope (DKIST), currently under construction by the National Solar Observatory (NSO) on the summit of Haleakala on the island of Maui in Hawaii.

The CDR represents the culmination of about three years of design work, trade studies, instrument modeling, and performance analyses, which have led to the current design (see Figure), and which will ensure that the ViSP instrument is able to meet the desired science requirements, and ultimately provide important insights about the magnetic structure and the dynamics of the solar photosphere, chromosphere, and corona. The ViSP instrument will be able to simultaneously measure three distinct wavelengths in the visible range of the solar spectrum (380 to 900 nm) with very high spatial and spectral resolutions. The interpretation of these spectral signatures will allow scientists to infer magnetic fields at very small spatial and temporal scales, and will increase our understanding of the role of solar magnetism as a driver of earth-impacting solar events.

The ViSP Instrumental development effort at HAO is being led by Principal Investigator Roberto Casini and is supported by several other staff members including Alfred de Wijn, Michael Knoelker, Scott Sewell, Phil Oakley, Dennis Gallagher, Alice Lecinski, Greg Card, Brandon Larson, Rob Graves and former colleague Rich Summers. The next step for the team will be to fabricate, deploy and commission the ViSP instrument at the DKIST in the Spring of 2019.