Building the 200 inch Palomar Telescope - 1948 Dedication issue in PDF Format Airguide Light Management System

Light Management System

and the forged surfaces are painted red

but works flawlessly

I bought these when I was in graduate school at UT Austin in 1975

NIKON UR-E10 Step-Down Ring lens adaptor

Building the 200 inch Palomar Telescope - 1948 Dedication issue in PDF Format Airguide Light Management SystemBuilding the 200 inch Palomar Telescope 1948 Dedication issue in PDF Format. You are purchasing a downloadable DIGITAL FILE in PDF format that is suitable for printing or viewing on your desktop, laptop, phone, e reader, or any platform that allows you to view a PDF. This is a high quality digital photo scan of the 1948 Dedication Issue of the Caltech Engineering and Science magazine. This is the complete magazine, and it shows some age and wear