Visible light scatter measurements of the Advanced X-ray Astronomical Facility /AXAF/ mirror samplesNASA is studying the properties of mirror surfaces for X-ray telescopes, the data of which will be used to develop the telescope system for the Advanced X-ray Astronomical Facility. Visible light scatter measurements, using a computer controlled scanner, are made of various mirror samples to determine surface roughness. Total diffuse scatter is calculated using numerical integration techniques and used to estimate the rms surface roughness. The data measurements are then compared with X-ray scatter measurements of the same samples. A summary of the data generated is presented, along with graphs showing changes in scatter on samples before and after cleaning. Results show that very smooth surfaces can be polished on the common substrate materials (from 2 to 10 Angstroms), and nickel appears to give the lowest visible light scatter.
Document ID
19810052497
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Griner, D. B. (NASA Marshall Space Flight Center Huntsville, Ala., United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1981
Subject Category
Optics
Meeting Information
Meeting: Seminar on Radiation scattering in optical systems