The factors which limit the recording speed and the resolution of infra-red spectra are reviewed, and methods offering increased overall photometric efficiency are examined.
The attainment of greater efficiency by means of multi-slit arrangements is discussed and the experimental results are described.
MARCEL T. E. GOLAY, "Multi-Slit Spectrometry," J. Opt. Soc. Am. 39, 437-437 (1949)