Deep imaging

As is clear from Table 2, zinc plates gave relatively deep images compared with those of the Photopolymer Plate. However, there is not much difference in the depth between those stereos obtained from zinc plates and the Photopolymer Plate, as shown in Table 3. This means that in reproduction work from a paper mold into a stereo, even if an effort is made to give more depth beyond necessity, it is not actually reproduced in the stereo. The Photopolymer Plate can show a satisfactory reproduceability if it has 30-40 urn depth in the shadow area. Further evaluations were made on isolated lines (in case of 60-150 jim line width) and depth in reverse area for their reproduceability onto paper surface, and the results were more stable than those with metal plates. Stereos can be also made with polypropylene as well as with lead. 

The observations reported in this paper were recorded with the University of Hawaii frifrared Camera at the Cassegr un focus of the UH 2.2 metre telescope. A series of short (90 sec/filter) e osures were recorded of the cluster centre, while longer exposures (1 hour/filter) were recorded of three fields located between 15 and 25 core radii from the cluster centre, and a background comparison field. The seeing was t3rpically 1 arcsec FWHM, and the 50% completeness levels iu the deep images occur at J 20.5 and A 19. 

FLAT FIELDING A DEEP IMAGE FROM KCAM... 

Fig. 1. Deep Image with KCam on the Lidc 1-m telescope...

In this figure one can clearly see an image of a weld defective area with a superimposed groove defectometer Fe2 4 mm thick. The depth of a minimum groove was 0,5 mm. One can clearly see a groove 0,2 mm deep, which corresponds to sensitivity less than 2% Both incomplete root penetration and metal weld beads can be clearly seen in the image. 

Figure Bl.19.7. A series of time-lapse STM topographic images at room temperature showing a 40 mn x 40 mn area of Au(l 11). The time per frame is 8 mm, and each took about 5 min to scan. The steps shown are one atomic unit in height. The second frame shows craters left after tip-sample contact, which are two and three atoms deep. During a 2 h period the small craters have filled completely with diflhismg atoms, while the large craters continue to fill. (Taken from [29], figure 1.)...

SFM image of oxidized Si wafer showing pinhole defects 20 A deep. 

X-ray imaging can be used throughout the body. X-rays penetrate all body constituents with modest scattering, which allows precise localization of objects deep in the tissue. 

We prepared microchannel reactor employing stainless steel sheet 400tan thick patterned microchannel by a wet chemical etching. The microchannel shape and dimension were decided by computer simulation of flow distribution and pressure drop of the reactants in the microchaimel sheet. Two different types of patterned plates with mirror image were prepared [5]. The plate has 21 straight microchannels which are 550/an wide, 230/an deep and 34mi long as revealed in Fig. 1(b). 

---