Abstract

Spectral transmittance measurements covering the 3.5–5.5-μ band were made over horizontal paths of length up to a maximum value equal to the reduced atmosphere (8 km). The measurements, which were made from a mountain site at 5200-m altitude, used a folded path technique for some of the ranges with corner reflectors located at the remote ends of the paths. The data were required mainly for the verification of transmission prediction methods, and for this purpose the 4.3-μ CO₂ band was chosen. The results of the measurements over this band are given together with prediction and laboratory spectra for comparison.

© 1965 Optical Society of America

A Study of the Solar Spectrum from 7 μ to 400 μ

C. B. Farmer and P. J. Key
Appl. Opt. 4(9) 1051-1068 (1965)

Calculations of Atmospheric Radiation From 4.2 μ to 5 μ

L D. Gray and R. A. McClatchey
Appl. Opt. 4(12) 1624-1631 (1965)

Atmospheric Transmission in the CO₂ Bands Between 12 μ and 18 μ

S. Roland Drayson
Appl. Opt. 5(3) 385-391 (1966)

Infrared Measurements of Atmospheric Transmission at Sea Level

John L. Streete
Appl. Opt. 7(8) 1545-1549 (1968)

Spectral Absorption of the 4.6-μ, Bands of N₂O

L. D. Gray
Appl. Opt. 4(11) 1494-1499 (1965)