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Proceedings Paper

Tohoku University focal plane array controller (TOUFPAC)
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Paper Abstract

TUFPAC (Tohoku University Focal Plane Array Controller) is an array control system originally designed for flexible control and efficient data acquisition of 2048 x 2048 HgCdTe (HAWAII-2) array. A personal computer operated by Linux OS controls mosaic HAWAII-2s with commercially available DSP boards installed on the PCI bus. Triggered by PC, DSP sends clock data to front-end electronics, which is isolated from the DSP board by photo-couplers. Front-end electronics supply powers, biases and clock signals to HAWAII2. Pixel data are read from four outputs of each HAWAII2 simultaneously by way of four channel preamps and ADCs. Pixel data converted to 16 bit digital data are stored in the frame memory on the DSP board. Data are processed in the memory when necessary. PC receives the frame data and stores it in the hard disk of PC in FITS format. A set of the DSP board and front-end electronics is responsible for controlling each HAWAII-2. One PC can operate eight mosaic arrays at most. TUFPAC is applicable to the control of CCDs with minor changes of front-end electronics.

Paper Details

Date Published: 7 March 2003
PDF: 6 pages
Proc. SPIE 4841, Instrument Design and Performance for Optical/Infrared Ground-based Telescopes, (7 March 2003); doi: 10.1117/12.459864
Show Author Affiliations
Takashi Ichikawa, Astromical Institute/Tohoku Univ. (Japan)
Daigo Matsumoto, Astronomical Institute/Tohoku Univ. (Japan)
Kenshi Yanagisawa, Okayama Stohysical Observatory/NAOJ (Japan)
Yuka Katsuno, Astronomical Institute/Tohoku Univ. (Japan)
Ryuji Suzuki, Astronomical Institute/Tohoku Univ. (Japan)
Chihiro Tokoku, Astronomy Institute/Tohoku Univ. (Japan)
Ken'ichiro Asai, Astronomical Institute/Tohoku Univ. (Japan)
Tetsuo Nishimura, Subaru Telescope/NAOJ (United States)

Published in SPIE Proceedings Vol. 4841:
Instrument Design and Performance for Optical/Infrared Ground-based Telescopes
Masanori Iye; Alan F. M. Moorwood, Editor(s)

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