Physics – Optics
Scientific paper
Sep 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984phdt.........4h&link_type=abstract
Ph.D. Thesis Arizona Univ., Tucson.
Physics
Optics
8
Charge Coupled Devices, Fiber Optics, Galactic Clusters, Spectrometers, Algorithms, Focal Plane Devices, Image Processing, Numerical Control, Optical Fibers, Stepping Motors, Velocity Distribution
Scientific paper
Techniques involved in using a fiber optic coupled spectrometer to do multiple object spectroscopy of astronomical objects are described. The Medusa spectrograph, with optical fibers fixed in a focal plane aperture plate, was used to study clusters of galaxies via velocity distributions. Some relevant problems in the study of the structure and dynamics of clusters of galaxies are outlined as motivation for building a multiple fiber spectrometer. The history of fiber optic spectroscopy in astronomy is presented along with an outlook for the future. The results and experience gained from the Medusa spectrograph are used to design a second generation instrument. The MX Spectrometer uses optical fibers which are positioned remotely under computer control. These fibers are optically matched to the telescope and spectrograph optics to achieve optimum performance. The transmission, flexibility and image scrambling properties of step-index silica fibers allow efficient reformatting of multiple objects into the spectrometer entrance aperture.
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