A liquid nitrogen cooled rocketborne near infrared interferometer spectrometer has been developed using compensating wedge prisms to achieve a wide field-of-view and using a gas-lubricated bearing slide for the movable mirror carriage to maintain stable precision alignment and scanning speeds of 1 second/scan. A nickel manganese iron alloy has been developed which has very nearly the same thermal physical properties of calcium flouride, thus rigid mounting of the calcium flouride is possible which reduces the possibility of fracture on cool down and assures optical alignment after the instrument is subjected to the severe vibration of the rocket flight. A entendue of 0.67 cm2 sr has been achieved and the bearing smoothness stiffness and control are sufficient to yield a resolution of at least 2 cm(sup-1). A liquid helium cooled bismuth doped silicon detector is used providing a NESR of 1.5 x 10(sup-12) watt cm(sup-2) sr(sup-1) at 5 microm when operating at a scan time of 1.3 seconds.


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    Title :

    Rocket-borne cryogenically cooled field-widened interferometer for the 2 to 8 micron spectral region


    Additional title:

    Raketengetragenes fluessig Stickstoff gekuehltes Interferometer mit erhoehtem Bildfeld fuer den 2 bis 8 Mikrometer Spektralbereich


    Contributors:


    Publication date :

    1979


    Size :

    10 Seiten, 11 Bilder, 2 Tabellen, 4 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





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    Kemp, J.C. / Huppi, R.J. | Tema Archive | 1979


    Rocket-borne liquid helium cooled telescope

    Fuhrmann, K. / Harwit, M. / Houck, J. R. | NTRS | 1969



    SIRTF, A Cryogenically Cooled IR Telescope

    Alff, W. H. / Schmidt, J. J. | SPIE | 1986