Abstract A large area (400 cm2) low background X-ray telescope consisting of four collimated NaI/CsI scintillator phoswich detectors (each 100 cm2) was built and successfully flown several times during 1980–1984. The phoswich configuration enables one to eliminate X-ray background produced by high energy atmospheric and cosmic gamma-rays. Combined with large area, small field of view (5° × 5°) and large exposure time that was possible due to an on-board telescope pointing programmer, for the 20 – 120 Kev energy range, 3σ sensitivity achieved was 5 × 10−6 photon/cm2 sec Kev for exposure time of 104 sec at observational altitude of 4 g/cm2. The Instrument characteristics, relevant details on pointing system, detector system, associated electronics and telemetry and in-flight performance in 1983 and 1984 are presented.


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    Titel :

    A high sensitivity phoswich scintillator X-ray telescope for hard X-ray (20 – 120 keV) astronomy from balloon platform


    Beteiligte:
    Damle, S.V. (Autor:in) / Kothare, A.T. (Autor:in) / Kunte, P.K. (Autor:in) / Malkar, J.P. (Autor:in) / Naranan, S. (Autor:in) / Sreekantan, B.V. (Autor:in) / Venkatesan, D. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1987-01-01


    Format / Umfang :

    5 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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