Development of an Astronomical Infrared PtSi Camera

Details Development of an Astronomical Infrared PtSi Camera Development of an Astronomical Infrared PtSi Camera

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996pkas...11....1h&link_type=abstract

Publications of the Korean Astronomical Society, vol.11, no.1, p.1-26

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Scientific paper

We have built a near-infrared imaging camera with a PtSi array detector manufactured the Mitsubishi Company. The PtSi detector is sensitive in the wavelength range 1 to 5micrometer. Quantum efficiency of PtSi is much lower than that of InSb and HgCdTe types. However, the PtSi array has advantages over the latter ones:(i)The read-out noise is very low;(ii)the characteristics of the array elements are uniform and stable; (iii)it is not difficult to make a large PtSi array; and (iv)consequently the price is affordably low. The array used consists of 512 x 512 pixels and its size is 10.2 mm x 13.3 mm. The filter wheel of the camera is equipped with J, H, K filters, and an aluminum plate for measuring the dark noise. The dewar is cooled with liquid nitrogen. We have adopted a method of installing the clock pattern and the observing softwares in the RAM, which can be easily used for other systems. We have developed a software with a pull-down menu for operating the camera and data acquisition. The camera has been tested by observing Orionis.

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