Accession Number:

ADA510167

Title:

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

Descriptive Note:

Journal article

Corporate Author:

NATIONAL CENTER FOR ATMOSPHERIC RESEARCH BOULDER CO

Report Date:

2009-11-01

Pagination or Media Count:

11.0

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.

Subject Categories:

  • Astrophysics
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE