RAPID: Multiwavelength Imaging and Spectroscopy of the Corona During the 2021 December 4 Total Solar Eclipse

RAPID：2021 年 12 月 4 日日全食期间日冕的多波长成像和光谱学

• 批准号: 2130009
• 负责人: Shadia Habbal
• 金额: $ 19.99万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-06-01 至 2022-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2130009&HistoricalAwards=false
• 关键词: RAPID; Multiwavelength; Imaging; Spectroscopy; Corona

Solar eclipses provide a rare opportunity to learn about the solar corona. This outer layer of the Sun is a mystery – it is millions of degrees and much hotter than the photosphere below it. This Rapid Response Research (RAPID) project will observe the 2021 December 4 total solar eclipse from a vessel in the Weddell Sea, northeast of Antarctica. The observations will observe coronal structures. It will also be a testbed for future eclipse expeditions that can take advantage of observing from vessels. This is particularly important since 70% of the paths of totality occur over oceans. Team members will be actively engaged in outreach, targeting under-represented groups in STEM.The 2021 December 4 eclipse will be observed through imaging in white light and the Fe X 637.4 nm, Fe XI 789.2 nm, and Fe XIV 530.3 nm coronal forbidden lines along with spectroscopic observations from 340 – 1100 nm. The equipment will be placed on the deck of a vessel, which will intercept the centerline of totality for approximately two minutes. Data acquisition with the imagers and spectrometers will require image stabilization and short exposure times. Corrections will be made to the instrumentation to account for the vessel’s two dominant motions: vibrations and high amplitude, low frequency motions.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

日食提供了一个难得的机会来了解日冕。太阳的外层是一个谜-它有数百万度，比它下面的光球热得多。这个快速反应研究（RAPID）项目将从南极洲东北部威德尔海的一艘船上观测2021年12月4日的日全食。观测将观测日冕结构。它也将成为未来日食探险的试验平台，可以利用船只进行观测。这一点尤其重要，因为70%的全食路径发生在海洋上。2021年12月4日的日食将通过白色光成像和Fe X 637.4 nm、Fe XI 789.2 nm和Fe XIV 530.3 nm日冕禁限线沿着与340 - 1100 nm的光谱观测进行观测。设备将放置在船只的甲板上，该船只将拦截总体中心线约两分钟。使用成像仪和光谱仪采集数据需要图像稳定和短曝光时间。将对仪器进行校正，以说明船舶的两个主要运动：振动和高振幅，低频运动。该奖项反映了NSF的法定使命，并已被认为是值得通过使用基金会的智力价值和更广泛的影响审查标准进行评估的支持。