It implies changes in the value of the effective total obscuration RV, originally equal to 4.05 for the Calzetti et al. law.
There are slightly more than 1,000 known planetary nebulae in the Galaxy, but many might be overlooked because of obscuration in the Milky Way region.
The Galaxy contains more than 150 globular clusters (the exact number is uncertain because of obscuration by dust in the Milky Way band, which probably prevents some globular clusters from being seen).
The faint galaxy, which lies in the direction of the constellation Sagittarius, had remained undetected because of obscuration caused by stars and dust lying in the disk of the Milky Way.
The Milky Way Galaxy contains more than 150 globular clusters (the exact number is uncertain because of obscuration by dust in the Milky Way band, which probably prevents some globular clusters from being seen).
Fig. 3 Comparison of obscuration factors for this model (blue) vs. geometric (red).
The time of obscuration is measured and since the rotary speed of the laser is known, the particle diameter can be determined using the Laser Obscuration Time (LOT) principle (Moes and Flash 2013).
Cameron classifies these as (1) gaseous, involving mists and other forms of obscuration, (2) reddish colorations, (3) green, blue or violet colorations, (4) brightenings, and (5) darkenings.
The link availability is primarily dependent upon the existence of obscurations in the atmosphere.
Detailed anatomic evaluation of the CT part of PET/CT is essential for the detection of subtle obscuration of fat planes beneath the skull base or bony erosion of skull-base foramina.
Because of the obscuration of dust in the Galaxy, only about 1,800 planetary nebulae have been cataloged.
