A new spectro-polarimeter for solar prominence and filament magnetic field measurements

David F. Elmore, Roberto Casini, Greg L. Card, Marc Davis, Alice Lecinski, Ron Lull, Peter G. Nelson, Steven Tomczyk

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Scopus citations

Abstract

We are constructing a spectro-polarimeter using the 40-cm coronagraph at the Evans Solar Facility of the National Solar Observatory in Sunspot, NM for the purpose of measuring the vector magnetic field in prominences and filaments. The Prominence Magnetometer (ProMag) is comprised of a polarization modulation package and a spectrograph. The modulation optics are located at the prime focus of the coronagraph along with calibration optics and a beamsplitter that creates two beams of orthogonal Stokes states. The spectrograph resides at the coude focus of the coronagraph. The polarizations of the two chromospheric lines of neutral helium, at 587.6 nm and 1083.0 nm, are to be observed simultaneously. We present details of the design of the spectro-polarimeter.

Original languageEnglish
Title of host publicationGround-based and Airborne Instrumentation for Astronomy II
DOIs
StatePublished - 2008
EventGround-based and Airborne Instrumentation for Astronomy II - Marseille, France
Duration: Jun 23 2008Jun 28 2008

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7014
ISSN (Print)0277-786X

Conference

ConferenceGround-based and Airborne Instrumentation for Astronomy II
Country/TerritoryFrance
CityMarseille
Period06/23/0806/28/08

Keywords

  • Magnetic fields
  • Spectro-Polarimetry
  • Sun

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