Stereoscopic Spectrosopy for Magnetic Field Measurements
Abstract
We present a novel, photon-efficient technique for measuring the Zeeman splitting of a spectral line everywhere in an image plane. The technique, differential stereoscopy}, allows extraction of spectral line profiles from multiple dispersed, slitless ``smearogram'' images of the Sun such as are formed by a slitless, multi-order (``stereoscopic'') spectrograph. Because stereoscopic spectrographs admit all photons of interest, they can be over an order of magnitude more photon-efficient than traditional techniques. We will discuss the technique in the context of chromospheric and coronal magnetic fields, and present results from an initial proof-of-concept photospheric test using the ASP at the National Solar Observatory.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2003
- Bibcode:
- 2003AGUFMSH41D..07D
- Keywords:
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- 7509 Corona;
- 7524 Magnetic fields;
- 7529 Photosphere;
- 7594 Instruments and techniques