Abstract

A method for the compensation of a variable light source in photoelectric spectrophotometry is presented. The outputs of a scanning photo-cell and a monitoring cell are fed to two amplifiers. The outputs of these amplifiers are then fed to a self-balancing recording potentiometer. The equipment has laboratory as well as astrophysical applications. The limiting magnitude at which useful spectrophotometry with a resolution of 1<i>A</i> is approximately 4. Further development work is in progress.

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References

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  1. G. Van Biesbroeck, McDonald Observatory Contribution No. 1, 103 (1936).
  2. G. Kron, Electronics 21, 103 (1948).
  3. MIT Radiation Lab. Series No. 18, Vacuum Tube Amplifiers, p. 480.
  4. Dieke and Crosswhite, J. Opt. Soc. Am. 35, 480 (1945).

Kron, G.

G. Kron, Electronics 21, 103 (1948).

Van Biesbroeck, G.

G. Van Biesbroeck, McDonald Observatory Contribution No. 1, 103 (1936).

Other (4)

G. Van Biesbroeck, McDonald Observatory Contribution No. 1, 103 (1936).

G. Kron, Electronics 21, 103 (1948).

MIT Radiation Lab. Series No. 18, Vacuum Tube Amplifiers, p. 480.

Dieke and Crosswhite, J. Opt. Soc. Am. 35, 480 (1945).

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