A New Spectropolarimeter at the Dodaira Observatory
Citations Over TimeTop 24% of 1999 papers
Abstract
We report a newly developed spectropolarimeter with a low‐dispersion resolution (R = 40–200) and a wide coverage in wavelength (400–900 nm). It is mainly used along with the 0.91 m telescope at the Dodaira Observatory of the National Astronomical Observatory, Japan. This instrument and the related reduction software are described briefly. The present polarimetric accuracy (rms) is estimated to be [(P/50)2 + (0.05)2]1/2%, where P is the linear polarization degree in percent. The spectropolarimeter has the advantage of being most useful in the polarimetric studies of both the continuum and the strong emission and/or absorption lines. It is mainly used for the short‐ or long‐term monitoring of variable circumstellar polarization and of polarization in comets, and for studies on interstellar polarization.
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