HR: 11:55h
AN: SH41D-07    [PDF]
TI: Stereoscopic Spectrosopy for Magnetic Field Measurements
AU: * DeForest, C E
EM: deforest@boulder.swri.edu
AF: Southwest Research Institute, 1050 Walnut Street, Suite 400, Boulder, CO 80302
AU: Hassler, D M
EM: hassler@boulder.swri.edu
AF: Southwest Research Institute, 1050 Walnut Street, Suite 400, Boulder, CO 80302
AB: We present a novel, photon-efficient technique for measuring the Zeeman splitting of a spectral line everywhere in an image plane. The technique, \textit{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.
DE: 7509 Corona
DE: 7524 Magnetic fields
DE: 7529 Photosphere
DE: 7594 Instruments and techniques
SC: SPA - Solar and Heliospheric Physics [SH]
MN: 2003 Fall Meeting