view Abstract Citations References Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A plan for operating an astronomical telescope in an earth satellite. Davis, R. J. ; McCrosky, R. E. ; Whipple, F. L. ; Whitney, C. A. Abstract The Smithsonian Astrophysical Observatory is developing plans for an astronomical telescope in a satellite orbit for the study of the far ultraviolet radiation from objects other than the sun. A preliminary feasibility study indicates that the device will consist of an 8-inch J/3 off-axis mirror, with a specialized television image-tube placed at the focus. The total configuration of optical and electronic components will be almost spherical. The orbit preferably will have an inclination of 350 to 450, mean height of at least 500 miles, approximately circular. Optimum reliability is achieved through centering the more complex electronic components at ground installations. The entire celestial sphere can be covered through active image transmission during long-path crossings of the United States, utilizing two control stations for satellite telescopes: a master and a slave separated by a distance of 2000 miles. The initial experiment will map the intensity of radiation f~om the entire sky in four colors between ioooA and 3oooA with a sensitivity and resolution that will allow us to record a minimum average of 10 stars per square degree, with an angular resolution better than I minute of arc. The sensitivity will be adj ustable over fairly wide limits. Harvard College Observatory and Smithsonian Astrophysical Observatory, Cambridge, Mass. Publication: The Astronomical Journal Pub Date: March 1959 DOI: 10.1086/107860 Bibcode: 1959AJ.....64...50D full text sources ADS |