Stellar Occultations in the 1990's: Portable, High-Speed CCD Photometers

20 世纪 90 年代的恒星掩星：便携式高速 CCD 光度计

• 批准号: 9121473
• 负责人: Robert Millis
• 金额: $ 5.18万
• 依托单位: Lowell Observatory
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-03-01 至 1993-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9121473&HistoricalAwards=false
• 关键词: Stellar; Occultations; 1990; Portable; Speed

This award will be used at Lowell Observatory to develop a new generation of photometers based on Charge Coupled Devices (CCD) for use in observing occultations of stars by objects in the Solar System. When compared with conventional high-speed photometers that use photomultipliers, a CCD-based photometer provides much greater quantum efficiency over a broader wavelength range, the ability to guide the telescope directly from the CCD image, and the ability to construct a much smaller synthetic photometric aperture after the fact that tracks image motion and can be optimized for changing seeing conditions. As a result, the CCD-based photometer provides a substantially greater signal-to-noise ratio than the traditional photometer for a given event, and it allows useful observations of the more numerous events involving fainter stars to be made. The high-speed CCD photometer must be portable in order to be used with a portable telescope or a fixed telescope that happens to lie within an occultation path.

该奖项将用于洛厄尔天文台开发一种新的 基于电荷耦合器件（CCD）的光度计的产生， 用于观测太阳系中的天体对恒星的掩星 系统 与传统的高速光度计相比 使用光电倍增管的基于CCD的光度计提供了很多 在更宽的波长范围内具有更高的量子效率， 直接从CCD图像引导望远镜的能力， 能够构建更小的合成光度孔径 在跟踪图像运动并且可以被优化用于 改变视觉条件。 因此，基于CCD的光度计 提供了一个大大高于信噪比 传统的光度计为给定的事件，它允许有用的 对更多涉及暗星的事件的观测 要做的事。 高速CCD光度计必须是便携式的 与便携式望远镜或固定式望远镜一起使用 恰好位于掩星路径内