BMC Industries, which makes aperture masks for color televisions, gained 2 1 / 8 to 23 5 / 8.
2.
For simplicity the aperture masks are usually either placed in front of the secondary mirror ( e . g.
3.
On December 4, 1984 it became the first telescope to make optical closure phase measurements on an astronomical source using an aperture mask.
4.
BMC Industries, Minneapolis, a designer and manufacturer of precision etched products, will invest $ 80 million to $ 85 million to expand its current aperture mask production capacity.
5.
Although the signal-to-noise of speckle masking observations at high light level can be improved with aperture masks, the faintest limiting magnitude cannot be significantly improved for photon-noise limited detectors ( see Buscher & Haniff ( 1993 ) ).
6.
Also reporting strong earnings were BMC Industries, which makes aperture masks for color television picture tubes, up 2 5 / 8 to 27 5 / 8; and Northwest Airlines Corp ., up 1 7 / 8 to 47 7 / 8.
7.
Also gaining this week were BMC Industries Inc ., which makes aperture masks for color television picture tubes, up 2 5 / 8 to 24 1 / 8; and Minnesota Educational Computing Corp ., an educational software company, up 2 1 / 4 to 24 3 / 4.
8.
Figures 1 . b ) and 1 . c ) show examples of aperture masks used in front of the secondary at the Keck telescope by Peter Tuthill and collaborators; Figure 1 . b ) is a non-redundant mask while Figure 1 . c ) is partially redundant.
9.
Also reporting strong earnings were BMC Industries Inc ., which makes aperture masks for color television picture tubes, up 3 1 / 4 for the week to 27 7 / 8; and Apogee Enterprises Inc ., which makes aluminum window systems, up 2 13 / 16 to 26 5 / 8.
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