Abstract

Rotating step sectors or eight-step filters are used on emission spectrographs to expand the range over which concentration levels may be determined. When all eight steps of the device are used, the number of exposures which can be placed on one photo plate is limited. Many times it is desirable to increase this limited number–in particular if the analysis does not require the full range of sectoring.

Rotating Step-Sector for Use with ac or Other Intermittent Spectrographic Light Sources

Richard N. Kniseley and Velmer A. Fassel
J. Opt. Soc. Am. 45(12) 1032-1034 (1955)

A Step-Sector for the Astigmatic Spectrograph

Ralph E. Thiers
J. Opt. Soc. Am. 40(12) 849-851 (1950)

Lensless one-step rainbow holography using a synthesized masking slit

C. P. Grover, R. A. Lessard, and R. Tremblay
Appl. Opt. 22(20) 3300-3304 (1983)

The Step-Sector in Spectrochemical Analysis

Ralph E. Thiers
J. Opt. Soc. Am. 41(4) 273-276 (1951)

A Multi-Step Sector Photometer

J. A. Van den Akker
J. Opt. Soc. Am. 36(10) 561-568 (1946)