High-Quality Astronomical Images and Spectra with the Boston University Solar Telescope

波士顿大学的太阳望远镜已经使用了超过 十年，让学生观察太阳黑子，耀斑， 太阳的高分辨率光谱。 新技术 允许用CCD探测器改造这台望远镜， 相机，一个新的光学工作台和驱动电机，和个人- 基于计算机的驾驶、记录和绘图系统。 与 一个翻新的望远镜，学生可以制作，记录，并采取 太阳黑子、色球层观测的硬拷贝 发射、耀斑和光谱。 光谱分辨率高 足以直接看到夫琅和费的多普勒频移 线，在东翼和西翼，相对于参考 地球大气层中出现的线。 测量 多普勒频移加上太阳黑子的角运动， 来测量到太阳的距离 阶段观察结果 和角度大小的变化与金星的望远镜（这可以 在白天完成，因为金星是如此明亮），然后允许 它的轨道大小也是如此。 设置 光谱分辨率较低的水平，允许第一手 恒星、行星和月球的光谱学。

The Boston University Solar Telescope has been used for over ten years to allow students to observe sunspots, flares, and high-resolution optical spectra of the sun. New technology allows the renovation of this telescope with CCD detectors and cameras, a new optical bench and driving motor, and personal- computer based driving, recording, and plotting system. With a refurbished telescope, students can make, record, and take away hard copies of observations of sunspots, chromospheric emission, flares, and spectra. The spectral resolution is high enough to see first-hand the doppler shifts of the Fraunhofer lines, at the eastern and western limbs, relative to reference lines arising in Earth's atmosphere. Measurements of the doppler shifts plus angular motions of sunspots allow students to measure the distance to the Sun. Observations of the phases and angular size changes of Venus with the telescope (which can be done in the daytime since Venus is so bright) then allow a determination of the size of its orbit as well. Setting the spectral resolution to a lower level allows first-hand spectroscopy of stars, planets, and the moon.