Some THEMIS tip-tilt images .
Abstract
In the MTR (`MulTiRaies', i.e. multiline spectropolarimetry) mode of THEMIS, a map is the result of a reconstruction from a scan of the solar image on the spectrograph entrance slit. The result of image motion appears as zigzags along non-vertical lines or structures in the map. As an image stabilization system, the new tip-tilt acts in reducing such zigzags. A map is presented obtained with the tip-tilt ON where nearly no zigzag is visible.
- Publication:
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Memorie della Societa Astronomica Italiana
- Pub Date:
- 2007
- Bibcode:
- 2007MmSAI..78...23B
- Keywords:
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- Instrumentation: miscellaneous