Magnetically-focused electrono-graphic cameras have been under development at the Naval Research Laboratory for use in far-ultraviolet imagery and spectrography, primarily in astronomical and optical-geophysical observations from sounding rockets and space vehicles. Most of this work has been with cameras incorporating internal optics of the Schmidt or wide-field all-reflecting types. These cameras have flown on a number of sounding rocket missions for stellar ultraviolet studies, and are planned for addition-al missions on sounding rockets and space vehicles in the near future. More recently, we have begun development of electronographic spectro-graphs incorporating an internal concave grating, operating at normal or grazing incidence. We also are developing electronographic image tubes of the conventional end-window-photo-cathode type, for far-ultraviolet imagery at the focus of a large space telescope, with image formats up to 120 mm in diameter. Our work so far has been with air-exposable alkalihalide photocathodes sensitive in the wavelength range below 2100 A. We are presently under-taking to extend the utility of the electronographic Schmidt and end-window devices toward longer wave-lengths, by the use of appropriate photocathode materials.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Electronographic Cameras For Space Astronomy


    Beteiligte:

    Kongress:

    Instrumentation in Astronomy I ; 1972 ; Tucson,United States


    Erschienen in:

    Erscheinungsdatum :

    01.09.1972





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Electronographic cameras for space astronomy.

    Carruthers, G. R. / Opal, C. B. | NTRS | 1972




    Reconnaissance Cameras in Space

    Pressel, Phil | AIAA | 2013


    Space Radio Astronomy

    Ulvestad, J. S. / University of New Mexico; School of Engineering; Institute for Space and Nuclear Power Studies | British Library Conference Proceedings | 1997