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首页> 外文会议>Conference on Instrument Design and Performance for Optical/Infrared Ground-based Telescopes Pt.3, Aug 25-28, 2002, Waikoloa, Hawaii, USA >Preliminary optical design for the Flamingos-2 near-infrared multi-slit spectrograph and imager for Gemini-South
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Preliminary optical design for the Flamingos-2 near-infrared multi-slit spectrograph and imager for Gemini-South

机译：用于双子座南部的Flamingos-2近红外多狭缝光谱仪和成像器的初步光学设计

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摘要

The University of Florida previously designed and implemented a fully-cryogenic near-infrared multi-object (slit) spectrograph and imager called Flamingos which has been used successfully at the f/8.0 Cassegrain focus of the Kitt Peak 4.0-m telescope and elsewhere. Current plans are under way to design and to build a similar but larger, more efficient follow-on near-infrared instrument to be used at the f/16.0 focus of the 8.0-m Gemini-South telescope. The new design is called Flamingos-2. It will accommodate the (1.00 to 2.40)-micron wavelength range for grism-driven spectroscopy and it will provide direct imaging in the customary J-, H- and K-band(s). It will feature a 100.0-mm diameter collimated beam and it will reimage at 100.0 microns/arcsec upon a flat RSC Hawaii-2 (2048 by 2048 by 18-micron) array. We have designed preliminary all-refracting, all-spherical cryogenic optics for Flamingos-2. Near-infrared optical material alternatives are discussed. The importance of using low-index materials is emphasized. Our 6-element collimator contains only one high-index (ZnSe) element. Our 6-element camera contains no high-index element. It uses a medium-index near-infrared-transmitting optical glass which provides excellent color correction. We present these fully-quantitative preliminary optical designs for Flamingos-2 together with our analysis of its expected performance for spectroscopy and for direct-imaging applications.
机译：佛罗里达大学以前设计并实现了一种称为“火烈鸟”的全低温近红外多目标（狭缝）光谱仪和成像仪，该成像仪已成功用于Kitt Peak 4.0-m望远镜的f / 8.0 Cassegrain焦点和其他地方。目前正在计划设计并制造一种类似但更大，效率更高的后续近红外仪器，以用于8.0米双子座南望远镜的f / 16.0焦点。新设计称为Flamingos-2。它可以适应（1.00至2.40）微米的波长范围，用于Grisms驱动的光谱学，并且可以在常规J波段，H波段和K波段提供直接成像。它将具有直径为100.0毫米的准直光束，并且将在平坦的RSC Hawaii-2（2048 x 2048 x 18微米）阵列上以100.0微米/弧度重新成像。我们为火烈鸟2设计了初步的全折射全球面低温光学器件。讨论了近红外光学材料的替代品。强调了使用低折射率材料的重要性。我们的六元素准直仪仅包含一种高折射率（ZnSe）元素。我们的六元素相机不包含高折射率元素。它使用中折射率近红外透射光学玻璃，可提供出色的色彩校正。我们介绍了针对火烈鸟2的这些全定量初步光学设计，并对其在光谱学和直接成像应用中的预期性能进行了分析。

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