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First Observations by the Bonn Wide-Field Photometer and Polarimeter (WWFPP): Surface Polarimetry of the Crab Nebula
Published online by Cambridge University Press: 26 July 2016
Abstract
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To test the performance of the WWFPP in polarimetric mode, we performed surface polarimetry of the Crab nebula in February 1993 using the Asiago 1.82 m telescope of the ‘Osservatorio Astronomico di Padova’. The polarimeter is a new design and enables us to do simultaneous wide-field polarimetry (15 × 15 arcmin field with 0.43 arcsec/pixel) of four polarization angles using a twin Wollaston prism or simultaneous polarimetry of two angles using a double wedge plate with orthogonal sheet polarizers in combination with an achromatic half wave plate. For the observations described here we used the twin Wollaston. The advantages of this design are independency of fluctuations of atmospheric transmission and identical seeing for one set of Stokes parameters. The results of the observations are in agreement with results of other investigators who performed surface polarimetry of the Crab Nebula.
- Type
- Part Nine: Galactic Structure
- Information
- Symposium - International Astronomical Union , Volume 161: Astronomy from Wide-Field Imaging , 1994 , pp. 481 - 483
- Copyright
- Copyright © Kluwer 1994
References
Reif, K., Bagschik, K., Gebler, K.-H., Herkendell, W., Kohley, R., Leiber, Th., Müller, Ph., Pohlmann, Th. and Poschmann, H., 1993. In IAU Symp. 161, ‘Astronomy from Wide-Field Imaging’. These proceedings.Google Scholar
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