Abstract

An inexpensive four-function calculator is being used to calculate on-line the wavelengths of spectral lines on photographic plates measured with an optical comparator. Although all precise wavelength calculations are made by fitting data to a polynomial equation in a computer program, it is often desirable to know quickly the wavelength of some spectral line or whether there is a line at some known region. An on-line wavelength calculation while the spectrum plate is still on the optical comparator and the spectral line or region is still in view greatly assists the operator.

Optical Calculations with Automatic Computing Machinery*

Donald P. Feder
J. Opt. Soc. Am. 41(9) 630-635 (1951)

A Computer Method for the Automatic Reduction of Spectroscopic Data

Earle F. Ditzel and Lorrain E. Giddings
Appl. Opt. 6(12) 2085-2090 (1967)

Theoretical Calculation of Atomic Spectra Using Digital Computers*

Robert D. Cowan
J. Opt. Soc. Am. 58(6) 808-818 (1968)

Automatic Measurement, Reduction and Recording of Wavelengths from Spectrograms

George R. Harrison
J. Opt. Soc. Am. 25(6) 169-178 (1935)

Use of a Digital Computer for the Calculation of Aberration Coefficients

P. W. Ford
J. Opt. Soc. Am. 49(9) 875-877 (1959)