http://www.rssboard.org/rss-specification 720 http://ecuip-xtf.lib.uchicago.edu/xtf/search?f68-subject%3DAdvanced%20CCD%20Imaging%20Spectrometer%20(ACIS) Results for your query: f68-subject=Advanced CCD Imaging Spectrometer (ACIS) Thu, 01 Jan 1970 12:00:00 GMT http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/harvard-acis-chandra/harvard-acis-chandra.dc.xml The Advanced CCD Imaging Spectrometer is an instrument on the Chandra X-Ray Observatory that consists of an array of charged coupled devices. ACIS is especially useful because it can make X-ray images, and at the same time, measure the energy of each incoming X-ray, so that scientists can make pictures of objects using only X-rays produced by a single chemical element. http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/harvard-acis-chandra/harvard-acis-chandra.dc.xml Thu, 01 Jan 1970 12:00:00 GMT