北方象限仪
(原标题: Quadrantids of the North)
2022-01-08
浏览次数: 16
象限仪座流星雨以一个被遗忘的星座命名，为地球北半球的天文爱好者带来了一年一度的表演。流星雨在天空中的光芒位于古老的、天文学上已经过时的象方座。这个位置离北斗七星不远，位于现代星座牧夫座和天龙座的交界处。事实上，北极星就在这张照片的正下方，北斗七星（被一些人称为犁星）在它的上方，流星雨在它的右侧。遥望辐射点，象限仪座流星雨在夜空中划过，这是2022年1月4日流星雨高峰前后数小时内拍摄的合成图像。在前景中排列的是中国内蒙古明安图观测站的中国光谱射电日像仪的射电望远镜。产生象限仪座流星的尘埃流的一个可能来源在2003年被确定为一颗小行星。状态更新：部署詹姆斯·韦伯太空望远镜
查看原文解释
Named for a forgotten constellation, the Quadrantid Meteor Shower puts on an annual show for planet Earth's northern hemisphere skygazers. The shower's radiant on the sky lies within the old, astronomically obsolete constellation Quadrans Muralis. That location is not far from the Big Dipper, at the boundaries of the modern constellations Bootes and Draco. In fact north star Polaris is just below center in this frame and the Big Dipper asterism (known to some as the Plough) is above it, with the meteor shower radiant to the right. Pointing back toward the radiant, Quadrantid meteors streak through the night in the panoramic skyscape, a composite of images taken in the hours around the shower's peak on January 4, 2022. Arrayed in the foreground are radio telescopes of the Chinese Spectral Radioheliograph, Mingantu Observing Station, Inner Mongolia, China. A likely source of the dust stream that produces Quadrantid meteors was identified in 2003 as an asteroid. Status Updates: Deploying the James Webb Space Telescope
© Cheng Luo