Upgrade of Facility Camera (NSFCAM) for the IRTF

IRTF 设施摄像机 (NSFCAM) 升级

• 批准号: 0096839
• 负责人: John Rayner
• 金额: $ 75万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-07-01 至 2006-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0096839&HistoricalAwards=false
• 关键词: Upgrade; Facility; Camera; NSFCAM; IRTF

AST-0096839TokunagaThe NSFCAM, an infrared imaging system developed over 10 years ago for use at the Infrared Telescope Facility (IRTF) will be upgraded to accommodate the improved image quality now given by the telescope when the adaptive optics system is in use and also accommodate new infrared focal plane technology developments. The adaptive optics system enables diffraction limited performance of the telescope, which is a spatial gain in resolution of a factor of about 8 better than without A/O. The current focal plane is a 256 by 256 InSb array. The new array will be a 1024 x 1024 pixel assembly. Upgrades to the current very successful system include: a new array controller, new lens tubes to provide new pixel scales of 0.04 and 0.08 arcseconds per pixel, a dedicated wavefront sensor for NSFCAM, and a new 1024 x 1024 science grade focal plane that is provided to the project through funds from another source. The instrument includes a Grism and a circular variable filter and a polarimeter which enable spectro-polarimetric imaging at selected spectral bands between 1 and 5 micrometer wavelengths. Science planned includes AO observations of extended sources such as planets, comets star clusters, star-forming regions, the Galactic Center, active galactic nuclei), as well as observations at higher spatial resolution across smaller fields for circumstellar disks, faint companions to near-by stars, and debris disks around stars. ***

AST-0096839Tokunaga NSFCAM是10多年前开发的红外成像系统，用于红外望远镜设施（IRTF），该系统将进行升级，以适应自适应光学系统使用时望远镜现在提供的改进的图像质量，并适应新的红外焦平面技术的发展。 自适应光学系统可实现望远镜的衍射极限性能，其空间分辨率增益比没有 A/O 时提高约 8 倍。 当前的焦平面是 256 x 256 InSb 阵列。 新阵列将是 1024 x 1024 像素组合。 对当前非常成功的系统的升级包括：新的阵列控制器、新的透镜管（可提供每像素 0.04 和 0.08 角秒的新像素尺度）、NSFCAM 专用波前传感器，以及通过其他来源的资金为该项目提供的新的 1024 x 1024 科学级焦平面。该仪器包括 Grism 和圆形可变滤光片以及偏振计，可在 1 至 5 微米波长之间的选定光谱带进行光谱偏振成像。 计划中的科学包括对行星、彗星星团、恒星形成区域、银河系中心、活动星系核等扩展源的AO观测，以及对星周盘、邻近恒星的微弱伴星和恒星周围碎片盘的较小视场进行更高空间分辨率的观测。 ***