Download or read book Postflight Optical Evaluation of the Right-hand and Left-hand Windows of Gemini Missions IV, V, VI and VII written by George P. Bonner and published by . This book was released on 1968 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transmission and relative resolution measurements were made before cleaning, and transmission, schlieren, relative resolution, and interferometric measurements were made after cleaning, on the right-hand and left-hand windows of Gemini spacecraft G-IV to G-VII. Chemical analyses of the contamination cleaned from the windows show that the primary constituent is amorphous silica.