The Astronomy Industry. Optics industry expert Greg Bragg will discuss the many different aspects of the astronomy industry. This will include the size, prominent manufacturers and brands, better retailers, and some marketing strategies and costs. Greg has been in and around the optics industry since the late 70's with various positions at Wolf Camera, Meade, Pentax, Explore Scientific and most recently Celestron, now retired. His knowledge of the nuts and bolts of the astronomy industry is extremely detailed and thorough.