Abstract

Measurement of the brightness of the sky near the sun is difficult because instrumental scattered light originating in the solar disk is usually many times brighter than light from the sky. An optical system for eliminating this scattered light and providing means for a visual photometric comparison between the sky and the sun has been constructed and tested. The principles of the instrument are explained in sufficient detail to permit the design of similar instruments for a wide range of applications.

© 1948 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Summary of Sky Brightness Measurements During Eclipses of the Sun

W. E. Sharp, S. M. Silverman, and J. W. F. Lloyd
Appl. Opt. 10(6) 1207-1210 (1971)

Measurements of the Brightness of the Twilight Sky

M. J. Koomen, C. Lock, D. M. Packer, R. Scolnik, R. Tousey, and E. O. Hulburt
J. Opt. Soc. Am. 42(5) 353-356 (1952)

Multiwavelength sun-photometers for accurate measurements of atmospheric extinction in the visible and near-IR spectral range

Claudio Tomasi, Franco Prodi, Monica Sentimenti, and Giulio Cesari
Appl. Opt. 22(4) 622-630 (1983)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (1)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (4)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription