Stereoscopic Spectrosopy for Magnetic Field Measurements

Details Stereoscopic Spectrosopy for Magnetic Field Measurements Stereoscopic Spectrosopy for Magnetic Field Measurements

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsh41d..07d&link_type=abstract

American Geophysical Union, Fall Meeting 2003, abstract #SH41D-07

Physics

7509 Corona, 7524 Magnetic Fields, 7529 Photosphere, 7594 Instruments And Techniques

Scientific paper

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.

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