National Research Council of Canada. NRC Herzberg Institute of Astrophysics
polarization; magnetic fields; instrumentation: polarimeters; stars: magnetic fields
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.
Polarimetry: From the Sun to Stars and Stellar Environments: 191–194.
Proceedings of the International Astronomical Union10, no. S305.