A new spectro-polarimeter for solar prominence and filament magnetic field measurements

We are constructing a spectro-­polarimeter using the 40-­cm coronagraph at the Evans Solar Facility of the National Solar Observatory in Sunspot, NM for the purpose of measuring the vector magnetic field 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 nm and 1083.0 nm, are to be observed simultaneously. We present details of the design of the spectro-polarimeter.

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Copyright 2008 SPIE.
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Author Elmore, David F.
Casini, Roberto
Card, Gregory L.
Davis, Marc
Lecinski, Alice R.
Lull, Ron J.
Nelson, Peter G.
Tomczyk, Steven
Publisher UCAR/NCAR - Library
Publication Date 2008-06-23T00:00:00
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Topic Category geoscientificInformation
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Metadata Date 2025-07-17T15:57:24.413371
Metadata Record Identifier edu.ucar.opensky::articles:19257
Metadata Language eng; USA
Suggested Citation Elmore, David F., Casini, Roberto, Card, Gregory L., Davis, Marc, Lecinski, Alice R., Lull, Ron J., Nelson, Peter G., Tomczyk, Steven. (2008). A new spectro-polarimeter for solar prominence and filament magnetic field measurements. UCAR/NCAR - Library. https://n2t.org/ark:/85065/d7jw8gnd. Accessed 26 August 2025.

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