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  • 1
    Electronic Resource
    Electronic Resource
    First experiences with ARNICA, the Arcetri observatory imaging camera (1994)
    Springer
    Experimental astronomy 3 (1994), S. 130-132 
    Details
    ISSN: 1572-9508
    Keywords: Imaging camera ; IR Photometry ; NICMOS 3
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract ARNICA (ARcetri Near Infrared CAmera) is the imaging camera for the near infrared bands between 1.0 and 2.5 μm that Arcetri Observatory has designed and built as a common use instrument for the TIRGO telescope (1.5 m diameter, f/20) located at Gornergrat (Switzerland). The scale is 1″ per pixel, with sky coverage of more than 4′×4′ on the NICMOS 3 (256×256 pixels, 40 μm side) detector array. The optical path is compact enough to be enclosed in a25.4 cm diameter dewar; the working temperature of detector and optics is 76 K. We give an estimate of performance, in terms of sensitivity with an assigned observing time, along with some preliminary considerations on photometric accuracy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00430133
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The impact of comet SL9 with Jupiter: IR observations at TIRGO (1994)
    Springer
    Earth, moon and planets 66 (1994), S. 83-89 
    Details
    ISSN: 1573-0794
    Keywords: Jupiter ; Comets ; Comet Shoemaker-Levy 9 ; Infrared
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Infrared images of Jupiter have been obtained on 5 nights before, during and shortly after the period of the impacts of the fragments of comet Shoemaker-Levy 9 (1993e) with the giant planet. Long lived bright spots produced by the impacts have been measured and analyzed. By measuring the intensity variation of the spots as a function of Jupiter rotation we show that these spots are likely constituted by large and thin clouds of dust located above the methane layer. The IR relative albedos has been also measured for some of these spots.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00612888
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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