ISLE: a general purpose near-infrared imager and medium-resolution spectrograph for the 1.88-m telescope at Okayama Astrophysical Observatory
ISLE: a general purpose near-infrared imager and medium-resolution spectrograph for the 1.88-m telescope at Okayama Astrophysical Observatory
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ISLE：冈山天体物理观测站 1.88 米望远镜的通用近红外成像仪和中分辨率摄谱仪
DOI：
10.1117/12.670956
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
T. Yamamuro
中科院分区：
文献类型：
--
作者：
K. Yanagisawa;Y. Shimizu;K. Okita;S. Nagayama;Yasuhiko Sato;H. Koyano;T. Okada;I. Iwata;F. Uraguchi;E. Watanabe;Michitoshi Yoshida;S. Okumura;H. Nakaya;T. Yamamuro
ISLE是冈山天体物理观测站1.88米望远镜卡塞格伦焦点(f/18)的近红外(1.0-2.5μm)成像仪和光谱仪。探测器是夏威夷1024×1024 HgCdTe阵列，覆盖4.2×4.2 arcmin2视场，像素尺度为0.25 arcsec/像素。ISLE还提供中分辨率(R=300-4800)长缝(4角长)光谱功能，使用反射光栅。该探测器的专用前端电路通过传统的Fowler采样实现了8个电子的读出噪声，并结合大量丢弃的读出操作方案大大抑制了重置异常。测得的极限震级分别为J=18.6和K=17.7(点震源在S/N=10下成像10min)。曝光)。
ISLE is a near-infrared (1.0-2.5μm) imager and spectrograph for the Cassegrain focus (f/18) of the 1.88 m telescope at Okayama Astrophysical Observatory. The detector is a HAWAII 1024 × 1024 HgCdTe Array, which covers 4.2 × 4.2 arcmin2 field of view with a pixel scale of 0.25 arcsec/pixel. ISLE also provides medium (R=300 - 4800) resolution long-slit (4 arcmin long spectroscopic capabilities using reflection gratings. A dedicated front-end electronics for the detector achieved a readout noise of 8 electrons by the conventional Fowler sampling, and a operation scheme that combined with a number of discarded readout greatly suppressed the reset anomaly. The measured limiting magnitudes were J=18.6 and K=17.7 (imaging of point sources at S/N=10 for 10 min. exposure).