A New Spectro-Polarimeter for Solar Prominence and Filament Magnetic Field Measurements

Abstract

We are constructing a spectro-polarimeter using the 4 0-cm coronagraph at the Evans Solar Facility of the National Solar Observatory in Sunspot, NM for the purpose of measuring the vector magnetic filed 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 cm and 1083.0 nm, are to be observed simultaneously. We present details of the design of the spectro-polarimeter.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 2009
Accession Number
ADA510167

Entities

People

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

Organizations

  • National Center for Atmospheric Research

Tags

DTIC Thesaurus Topics

  • Calibration
  • Cameras
  • Control Systems
  • Detectors
  • Filaments
  • Instrumentation
  • Magnetic Fields
  • Magnetometers
  • Measurement
  • Measuring Instruments
  • Modulation
  • Observatories
  • Optics
  • Polarimeters
  • Polarization
  • Polarizers
  • Spectrographs

Fields of Study

  • Physics

Readers

  • Optical Physics and Photonics.
  • Solar Physics