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  • 1
    Electronic Resource
    Electronic Resource
    Pupillometer for clinical applications using dual 256-element linear CCD arrays (1992)
    Springer
    Medical & biological engineering & computing 30 (1992), S. 487-490 
    Details
    ISSN: 1741-0444
    Keywords: Charge-coupled device ; Infra-red ; Pupillometer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract A new pupillometer for measuring the size of the pupil of the human eye is described. It uses two inexpensive 256-element charge coupled device (CCD) arrays in an orthogonal configuration. The system is controlled and data are analysed by means of a Z80A microcomputer. Software allows the position and diameter of the pupil to be displayed on a monochrome video monitor. Infra-red diodes irradiate the eye so that measurements can be made in darkness. The accuracy is better than ±0·1 mm, over the range 3·2–9·5 mm. Dynamic measurements of the pupil light reflex response can be made with sampling periods as short as 20 ms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02457826
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    Paper (German National Licenses)
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  • 2
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    Luminosity functions and color-magnitude diagrams for three OB associations in the Large Magellanic Cloud (1993)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: Using the point spread function photometry program DAOPHOT, we have used UBV CCD photometry to construct color-magnitude diagrams and luminosity functions for three OB associations in the Large Magellanic Cloud. The region LH 76 appears to be completely coeval; the region LH 13 shows some evidence for noncoevality which will need to be checked with spectra of the stars in question. The region LH 105, which lies on the southern edge of 30 Doradus, shows significant contamination by an underlying older population, possibly from previous star forming events. The luminosity functions, which serve as the first step toward determining the initial mass function in these regions, are calculated.
    Keywords: ASTROPHYSICS
    Type: Astronomical Journal (ISSN 0004-6256); 106; 3; p. 1005-1023.
    Format: text
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    NASA TECHNICAL REPORTS
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