Vol. 17, issue 08, article # 15

pdf Istomin A. S., Pavlov V. E., Semenko P. V. On consideration of instrumental polarization in monochromator measurements of brightness and polarization of diffuse skylight. // Atmospheric and oceanic optics. 2004. V. 17. No. 08. P. 623-624.
Copy the reference to clipboard

Possible errors in measurements of diffuse skylight by spectral devices free of analyzers are discussed. With a DMR-4 double quartz monochromator taken as an example, it is shown that the degree of instrumental polarization can exceed 0.2, which may result in 20% underestimation of real brightness at unfavorable relation between the skylight and instrument polarization angles. The equations for consideration of instrumental polarization are presented.