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Modified and More Versatile Direct-Reading Head for a 3.4-m Ebert Spectrograph

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A 3.4-m Ebert spectrograph, with its supplementary direct-reading head, was bought for this laboratory with certain requirements in mind:

• It should be a versatile photographic instrument, with high resolution and an optical system that would permit the variation of wavelength ranges and spectral orders, and the interchange of gratings.

• The instrument should provide a direct-reading head as an alternative to the photographic camera such that the changeover from photographic to direct-reading operation should be a simple and rapid procedure.

• It should be possible to alter the direct-reading program at will and with a minimum of trouble.

Document Type: Short Communication


Affiliations: 1: South Africa Iron and Steel Industrial Corporation, Pretoria, South Africa; presently at Nat. Bldg. Res. Inst., S. A. Council for Sci. Ind. Res., Pretoria, South Africa 2: South Africa Iron and Steel Industrial Corporation, Pretoria, South Africa

Publication date: January 1, 1967

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