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| Paper: |
A 2-dimensional Scanning Solar Vector Magnetograph at Udaipur Solar Observatory |
| Volume: |
405, Solar Polarization 5: In Honor of Jan Olof Stenflo |
| Page: |
467 |
| Authors: |
Gosain, S.; Venkatakrishnan, P. |
| Abstract: |
We describe a newly developed instrument used for performing filter based spectro-polarimetry of solar active regions. The instrument consists of a tunable Fabry-Perot etalon kept in collimated arrangement for spectroscopy in the wavelength range 550 to 700 nm. The polarimeter consists of two quarter wave-plates and a dual-beam calcite analyzer (Savart plate). We present the instrument design and the interactive tools for data analysis and visualization. These tools facilitate Milne-Eddington inversion, visualization, heliographic vector transformations and 180 degree ambiguity resolution. It is planned to upgrade the instrument to observe in chromospheric Na D2 and H-α lines together with photospheric Fe I 630.2 nm line pair, in near simultaneous mode. |
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