Active control of edges and global microstructure on segmented mirrors

Details Active control of edges and global microstructure on segmented mirrors Active control of edges and global microstructure on segmented mirrors

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008spie.7018e..31w&link_type=abstract

Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation. Edited by Atad-Ettedgui, Eli; Lemke, Dietrich.

Computer Science

Scientific paper

In this paper we address two interrelated issues important to primary mirror segments for extremely large telescopes - edge-control, and the detailed topography over the segment surface. Both affect the intensity and distribution of stray light and infrared emissivity. CNC polishing processes typically deploy spiral or raster tool-paths, tending to leave repetitive features. We compare and contrast two novel families of pseudo-random tool-paths for Precessions CNC polishing. We then show how CNC control of the three-dimensional tool-path can optimize edge-profiles. Finally, we demonstrate fluid-jet polishing used to clean up residual edge defects.

Affiliated with

Also associated with

No associations

Rating

Active control of edges and global microstructure on segmented mirrors does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Active control of edges and global microstructure on segmented mirrors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Active control of edges and global microstructure on segmented mirrors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-794402