Physics
Scientific paper
Sep 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986phdt........11m&link_type=abstract
Ph.D. Thesis California Univ., Berkeley.
Physics
3
Background Noise, Equipment Specifications, Space Shuttle Payloads, Spiral Galaxies, Ultraviolet Radiation, Cameras, Luminosity, Microchannel Plates, Power Spectra
Scientific paper
Two experiments which were performed to determine the origins of the far ultraviolet diffuse background are described. The first experiment was designed to make high sensitivity, moderate resolution spectroscopic measurements in the 600 to 2000 A band. All aspects of the instrument design, including the choice of the optical configuration, diffraction grating, detectors, filters, spectrograph design, and baffling systems were determined by key considerations: maximization of sensitivity and spectral resolution, minimization of biases and noise introduced by stellar contamination, airglow scattering, and internal background. The spectrometer was recently flown on Shuttle mission 61-C and successfully performed nine observations. For the second experiment, a far ultraviolet imaging camera was designed and built to search for small scale fluctuations in the far ultraviolet background that would be the signature of a significant integrated background contribution from normal spiral galaxies. Fluctuations were observed that were correlated for all the systematic errors which can bias a measurement of small amplitude fluctuations.
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