Extragalactic Astronomy with IR Arrays

“金地鼠”是一种中红外二维成像技术 仪器于1989年完成。 焦平面采用20 X64 由Aerojet Electronic Systems制造的元素As：Si阵列 以0.83 arcsec/pixel的板比例进行划分。 黄金- Gopher目前在3 mJy/像素的通量密度下实现SNR = 1 在30分钟的源上集成中，在8.5微米处， 微米带宽 光学设计包括分光 通过旋转具有光栅的平面镜， 背靠背 旋转轴承机构的问题 阻止了光谱模式下的观测。 在未来几 今年，金地鼠将被修改，以使例行 光谱观测，例如硅酸盐的长缝光谱 星系核的特征和8.7和11.3微米的“PAH” 乐队以及<$Ar III！，第四章和第二章！线 成像 光谱观测是由广泛的 星系，包括来自IRAS明亮星系样本的系统。 这些数据将提供有关细胞核形态的信息。 区域和物理范围的排放尘埃和电离 气体 这种测量将允许对 由于未分辨的活动核而产生的通量比例， 形成星星的区域。

The "Golden-Gopher", a mid-infrared, 2-dimensional imaging instrument was completed in 1989. The focal plane uses a 20X64 element As:Si array manufactured by Aerojet Electronic Systems Division with a plate scale of 0.83 arcsec/pixel. The Golden- Gopher currently achieves SNR = 1 at a flux density of 3 mJy/pixel in 30 minutes of on-source integration at 8.5 micrometer with a 1 micrometer bandwidth. The optical design includes a spectroscopic option at R=100 by rotating a plane mirror which has a grating back-to-back. Problems with the rotation bearing mechanism have prevented observations in the spectroscopic mode. In the coming year the Golden-Gopher will be modified to enable routine spectroscopic observations, e.g. long slit spectra of the silicate feature of galactic nuclei and the 8.7 and 11.3 micrometer "PAH" bands as well as the ıAr III!, ıS IV) and ıNe II! lines. Imaging spectroscopic observations are to be made of a wide range of galaxies, including systems from the IRAS bright galaxy sample. These data will give information on the morphology of the nuclear region and the physical extent of the emitting dust and ionized gas. Such measurements will allow new limits to be placed on the proportion of flux due to unresolved active nuclei as opposed to regions of star formation.