منابع مشابه
Stray Light Effect on Magnetograph Observations
To examine stray light eeect in magnetograph observations, we have determined the point spread functions of the vector magnetograph mounted on the Japanese Solar Flare Telescope based on two indirect methods, one analyzing the solar limb intensity proole, and the other using the Fourier power spectra of photospheric intensity distributions. Point spread functions consist of two parts: a blurrin...
متن کاملMeasurement of stray light and glare: comparison of Nyktotest, Mesotest, stray light meter, and computer implemented stray light meter.
AIM To evaluate the properties of devices for measuring stray light and glare: the Nyktotest, Mesotest, "conventional" stray light meter and a new, computer implemented version of the stray light meter. METHODS 112 subjects, divided in three groups: (1) young subjects without any eye disease; (2) elderly subjects without any eye disease, and (3) subjects with (early) cataract in at least one ...
متن کاملCharacterization of in band stray light in SBUV/2 instruments
Significant in-band stray light (IBSL) error at solar zenith angle (SZA) values larger than 77◦ near sunset in 4 SBUV/2 (Solar Backscattered Ultraviolet) instruments, on board the NOAA-14, 17, 18 and 19 satellites, has been characterized. The IBSL error is caused by large surface reflection and scattering of the air-gapped depolarizer in front of the instrument’s monochromator aperture. The sou...
متن کاملComparative investigation in stray light measurement in the human eye.
S. Schramm, BMTI/TU Ilmenau, Ilmenau, Germany, [email protected] B.-U. Seifert, BMTI/TU Ilmenau, Ilmenau, Germany, [email protected] J. Haueisen, BMTI/TU Ilmenau, Ilmenau, Germany, [email protected] P. Schikowski, GMC Systems mbH, Ilmenau, Germany, [email protected] J. Prehl, GMC Systems mbH, Ilmenau, Germany, [email protected] A. Kaeding, GMC Systems mbH...
متن کاملStray light calculation methods with optical ray trace software
Faster, better, and cheaper computers make it seem as if any optical calculation can be performed. However, in most cases brute force stray light calculations are still impossible. This paper discusses why this is so, and why it is unlikely to change in the near future. Standard software techniques for solving this problem are then presented, along with a discussion of how old techniques are us...
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ژورنال
عنوان ژورنال: The Japanese journal of psychology
سال: 1961
ISSN: 1884-1082,0021-5236
DOI: 10.4992/jjpsy.32.10