Abstract
A fully automatic program-controlled microdensitometer-comparator has been built by Faul-Coradi Scotland Limited for the Astronomical Institute at Utrecht. This instrument fulfils the stringent requirements for accuracy in the measurement of both position and density considered necessary for the reduction of stellar spectrograms. It features air-bearing transport of the spectrogram in one direction and of the measuring optics in the orthogonal direction; moiré-fringe position measurement and automatic focussing. Measuring sequences are fully automatic and under computer control.
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References
D.A. Beintema, Thesis, Groningen, The Netherlands, 1975.
W. Brandie and G.S. Walker, NEL Conference on Moire Fringe Technology, paper No. 7, published by the National Engineering Laboratory, U.K., 1972.
K.S. de Boer, Thesis, Groningen, The Netherlands, 1974.
R. Parks, R.L. Porteous and W. Brandie, Publ. of the Royal Obs. Edinburgh, 8, 130, 1971
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© 1975 D. Reidel Publishing Company, Dordrecht-Holland
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Heintze, J.R.W., Porteous, R.L., Brandie, W. (1975). The Fully Automatic Program-Controlled Microdensitometer-Comparator of the Astronomical Institute at Utrecht. In: De Jager, C., Nieuwenhuijzen, H. (eds) Image Processing Techniques in Astronomy. Astrophysics and Space Science Library, vol 54. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-1881-4_21
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DOI: https://doi.org/10.1007/978-94-010-1881-4_21
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