Casper, Wyoming, 10:15 am August 21, 2017 - count down to eclipse. Photo by Lou Berlin. His notes: The 3" f/5 Newtonian telescope is a "homebuilt" telescope which means I made the mirror at the Adler Planetarium Optical Shop in 1977 and used a mix of commercial parts and custom parts I had made by a machine shop. Actually, it's three Marchioni # 4602 Tiltall tripods that I have. They were nice when I got them, but I also used Flitz metal polish on them and waxed them with Turtle Wax for cars.