http://www.rssboard.org/rss-specification 720 http://ecuip-xtf.lib.uchicago.edu/xtf/search?docsPerPage%3D100;f1-type%3DPhotographic;f2-associated-Lesson%3DGamma%20Ray%20Tools Results for your query: docsPerPage=100;f1-type=Photographic;f2-associated-Lesson=Gamma Ray Tools Thu, 01 Jan 1970 12:00:00 GMT http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/GRIS_Ge_detectors/GRIS_Ge_detectors.dc.xml GRIS consists of seven of the world's largest, high-purity, n-type germanium (Ge) detectors. The detectors are cooled to liquid nitrogen temperatures (in order to achieve high resolution) and are surrounded by a thick anti-coincidence shield which allows the rejection of background events from true astrophysical events. http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/GRIS_Ge_detectors/GRIS_Ge_detectors.dc.xml Thu, 01 Jan 1970 12:00:00 GMT http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/GRIS_fall95/GRIS_fall95.dc.xml The balloon and GRIS payload head up to a float altitude of approximately 40 km. At float, the 39-million cubic foot balloon will expand to about the size of a football field. http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/GRIS_fall95/GRIS_fall95.dc.xml Thu, 01 Jan 1970 12:00:00 GMT http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/PIA02254/PIA02254.dc.xml Voyager 2 took this picture of Io July 10, 1979, from a range of 1.2 million kilometers (750,000 miles). The image was part of an extensive sequence of "volcano watch" pictures of Io. The sunlit crescent of Io is seen at the left, and the night side illuminated by light reflected from Jupiter can also be seen. Three volcanic eruption plumes are visible on the limb. All three were previously seen by Voyager 1. On the bright limb Plume 5 (upper) and Plume 6 (lower) are about 100 kilometers high, while Plume 2 on the dark limb is about 185 kilometers high and 325 kilometers wide. The "volcano watch" sequence of pictures told us that these volcanoes are persistent, change with time, and are larger and last longer than those on Earth. http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/PIA02254/PIA02254.dc.xml Tue, 10 Jul 1979 12:00:00 GMT http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/d_mcd-1/d_mcd-1.dc.xml The McDonald telescopes are located atop Mount Fowlkes (in the far background) and Mount Locke (in the foreground) in the Davis Mountains of West Texas. The telescopes are used by faculty and students in the University of Texas at Austin’s Astronomy department to study black holes and dark energy among other astronomical phenomena and mysteries. http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/d_mcd-1/d_mcd-1.dc.xml Thu, 01 Jan 1970 12:00:00 GMT http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/detector_module/detector_module.dc.xml On the right you can see the CZT detectors that form one 8 x 16 array. http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/detector_module/detector_module.dc.xml 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 http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/opo0206g/opo0206g.dc.xml A technician holds the Wide-Field Detector, a CCD device. It is one of three cameras that make up the Advanced Camera for Surveys on the Hubble Space Telescope. http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/opo0206g/opo0206g.dc.xml Thu, 01 Jan 1970 12:00:00 GMT