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Spectral Classification from Low Dispersion Objective Prism spectra taken with the UK 1.2m Schmidt Telescope

Published online by Cambridge University Press:  12 April 2016

K. Nandy*
Affiliation:
Royal Observatory, Edinburgh

Abstract

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A thin prism (with a dispersion of 2480 Å/mm at Hγ and Hβ) is now available for the UK 1.2m Schmidt telescope. Å 60-min. unwidened exposure on a Ilia-J (hypersensitized) emulsion reaches fainter than 20 mag. The spectra are measured and digitised with the fast measuring machine COSMOS. A method to determine the red shift of faint galaxies and the spectral classes of faint stars and galaxies from the digitised spectra will be described.

Type
V Classification related Spectrophotometry by Classical Techniques and by New Registration and Detection Methods
Copyright
Copyright © Vatican Observatory 1979

References

Cooke, J.A., Emerson, D., Nandy, K., Kedaish, V.C., and Smith, M.G. (1977). Monthly Mot. Roy. Astron. Soc. 178, 687.Google Scholar
Cooke, J.A. (Ph.D. thesis, Edinburgh University, in preparation).Google Scholar
Fay, T.D., Stein, W.L. and Warren, W.H. (1974). Publ. Astron. Soc. Pacific 86, 841.Google Scholar
MacGillivrary, H.T., Martin, R., Pratt, N.M., Reddish, V.C., Seddon, H., Alexander, L.W.G., Walter, G.S. and Williams, P.R. (1976). Monthly Mot. Roy. Astron. Soc. 176, 265.Google Scholar
Nandy, K., Reddish, V.C, Tritton, K.P., Cooke, J.A., and Emerson, D. (1977). Monthly Mot. Roy. Astron. Soc. 178, 63P.Google Scholar
Mandy, K., Straižys, V. and Sviderskiene, A. (1978). Astron. Circular, Moscow, No. 992, p. 2.Google Scholar
Pratt, N.M. (1977). Vistas in Astronomy 21. 1.Google Scholar
Thompson, G.I. (1971). Publ. Roy. Obs. Edin. 7, No. 2.Google Scholar