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| Paper: |
Fast Solar Polarimeter: Description and First Results |
| Volume: |
489, Solar Polarization 7 |
| Page: |
271 |
| Authors: |
Feller, A.; Iglesias, F. A.; Nagaraju, K.; Solanki, S. K.; Ihle, S. |
| Abstract: |
We are developing a novel fast solar imaging polarimeter with an emphasis on
significantly increased polarimetric accuracy and high spatial resolution. The
instrument is based on a fast pnCCD sensor and shall work at frame rates of up
to 400 fps, which suppresses spurious polarization signals induced by external
disturbances such as atmospheric turbulence or jitter. The much higher
polarimetric accuracy that can be achieved with the new instrument is in
particular expected to extend studies of the enigmatic small-scale magnetic
field in the quiet Sun, and of chromospheric magnetic fields. Here we will
report on some key concepts of the polarimeter, and on first results obtained
with an evaluation model at the spectrograph of the Vacuum Tower Telescope on
Tenerife. |
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