9 小时Opinion
Astronomy on MSNWhat is the difference between a 2″ eyepiece and a 1¼" eyepiece?What is the benefit of a 2″ eyepiece compared to a 1¼” eyepiece? Tom NagyNorth Ridgeville, Ohio A 2″ eyepiece delivers a ...
12 小时
Astronomy on MSNObserve the brightest deep-sky objectsThe Pleiades, Ptolemy's Cluster, the Large Magellanic Cloud — here's how to center the sky's brightest deep-sky wonders in ...
Kopin Corporation (NASDAQ: KOPN), a leading provider of application-specific optical systems and high-performance microdisplays for defense, training, enterprise, industrial, consumer and medical ...
Corporation announced it has received an order valued at $14M to supply custom thermal imaging assemblies from a leading defense ...
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