题 目:Triple-Range(g’ r’ i’)Imager and POLarimeter (TRIPOL):Simple and Versatile Instrument matched with small telescopes
报告人:Shuji Sato (佐藤修二) 名古屋大学天文系
摘 要:We have developed a simple and compact instrument called as TRIPOL (Triple-Range Imager and POLarimeter). It is capable of both imagery and polarimetry at three bands {g’ r’ i’}, by splitting a wavelength range from 400nm to 830nm into the 3-colors with two dichroic mirrors and three CCDs.
An achromatic half-waveplate (rotating) and a wire-grid (fixed) are added for polarimetry. It can be directly attached to a Cassegrain focus of small telescopes around 1m apertures. Owing to the simultaneous data-acquisition of the three-colors, it provides i) SED (Spectral Energy Distribution), ii) Color-Magnitude and iii) Color-Color Diagrams, and iv) P(λ, θ), wavelength-dependences of degrees and angles of polarization, automatically. We present results of the test observations at the Anpachi-0.7m and Lulin-1m telescopes.
We propose extension of the wavelengths range up to 1.55μm {Y, J, Hs}, using InGaAs array detectors.
时 间:2011年10月7日(星期五)上午 10:00
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