Hostname: page-component-586b7cd67f-t7czq Total loading time: 0 Render date: 2024-11-23T09:00:25.281Z Has data issue: false hasContentIssue false
  • English
  • Français

The DAO Liquid Crystal Spectropolarimeter dimaPol

Published online by Cambridge University Press:  24 July 2015

Dmitry Monin ,
David Bohlender ,
Tim Hardy  and
Les Saddlemyer
Dmitry Monin
Affiliation:
Dominion Astrophysical Observatory, Herzberg Astronomy and Astrophysics Program, National Research Council of Canada, 5071 West Saanich Road, Victoria, BC V9E 2E7, Canada email: [email protected]
David Bohlender
Affiliation:
Dominion Astrophysical Observatory, Herzberg Astronomy and Astrophysics Program, National Research Council of Canada, 5071 West Saanich Road, Victoria, BC V9E 2E7, Canada email: [email protected]
Tim Hardy
Affiliation:
Dominion Astrophysical Observatory, Herzberg Astronomy and Astrophysics Program, National Research Council of Canada, 5071 West Saanich Road, Victoria, BC V9E 2E7, Canada email: [email protected]
Les Saddlemyer
Affiliation:
Dominion Astrophysical Observatory, Herzberg Astronomy and Astrophysics Program, National Research Council of Canada, 5071 West Saanich Road, Victoria, BC V9E 2E7, Canada email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The spectropolarimeter dimaPol measures circular polarization in spectral lines of stellar objects. The instrument is used to simultaneously detect polarization signals in the hydrogen Hβ line as well as nearby metallic lines. A fast switching ferro-electric liquid crystal waveplate synchronized with charge shuffling on the CCD is employed to greatly reduce instrumental systematics. dimaPol has been in use on the DAO 1.8-m Plaskett telescope since 2007. In this presentation we show the capabilities of the instrument as well as some of the main results obtained with it to date.

Keywords

polarizationmagnetic fieldsinstrumentation: polarimetersstars: magnetic fields
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Symposium S305: Polarimetry: From the Sun to Stars and Stellar Environments , December 2014 , pp. 191 - 194
Copyright
Copyright © International Astronomical Union 2015 

References

Borra, E. F. & Landstreet, J. D. 1997, ApJ 212, 141 Google Scholar
Elkin, G. V. 1994, in: Zverko, J., and Ziznovsky, J. (eds.), Chemically peculiar and magnetic stars (Tatranska Lomnica, Slovak Republic) p. 35 Google Scholar
Landstreet, J. D., Silaj, J., Andretta, V., Bagnulo, S., Berdyugina, S. V., Donati, J.-F., Fossati, L., Petit, P., Silvester, J., & Wade, G. A. 2008, A&A 481, 465 Google Scholar
Mathys, G., Stehlé, C., Brillant, S., & Lanz, T. 2000, A&A 358, 1151 Google Scholar
Monin, D., Bohlender, D., Hardy, T., Saddlemyer, L., & Fletcher, M. 2012, PASP 124, 329 Google Scholar
Silvester, J., Wade, G. A., & Hanes, D. A. 2006, in: Casini, R. & Lites, B. W. (eds.), Solar Polarization 4, ASP Conf. Series 358 (San Francisco: ASP), p. 409 Google Scholar