Astronomy and Astrophysics – Astronomy
Scientific paper
May 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...204.6907c&link_type=abstract
American Astronomical Society Meeting 204, #69.07; Bulletin of the American Astronomical Society, Vol. 36, p.795
Astronomy and Astrophysics
Astronomy
1
Scientific paper
The Visible-light and the InfraRed Imaging Magnetograph (VIM-IRIM) are Fabry-Perot based filtergraphs working in a telecentric configuration, planned to upgrade the capability for measuring solar magnetic fields at BBSO. Both filtergraph instruments are designed to work with the combination of a narrow-band prefilter and a single Fabry-Perot etalon. VIM and IRIM will provide high temporal resolution, high spatial resolution (< 0.2 "/pixel image scale), high spectral resolution (< 0.1 Å) simultaneous observation at 600-700 nm and 1.0-1.6 μ m with a substantial field of view 170", respectively. Modifications in the setup allow also for scanning different spectral lines that cover the height range from the solar photosphere up to the solar chromopshere. Here we describe the optical setup and present first observations to demonstrate the feasibility of the instrument. After the instrument has proven to work as a 2D-spectrometer, the upgrade to a 2D spectropolarimeter is planned.
Cao Weiqun
Denker Carsten
Ma Jian
Marquette B.
Shumko Sergiy
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