In 1990, research astronomers started coming to us to obtain high-performance, high-precision telescope filters and optics. This was driven in part by the emergence of CCD imaging. At that time it was only large research institutions that could afford the $200,000 + costs associated with custom-building of such large format, digital cameras. Over many years, we perfected our skills and techniques in designing and manufacturing filters that are optimized to function with CCD cameras