Precessions process for efficient production of aspheric optics for large telescopes and their instrumentation

Details Precessions process for efficient production of aspheric optics for large telescopes and their instrumentation Precessions process for efficient production of aspheric optics for large telescopes and their instrumentation

Feb 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spie.4842...73w&link_type=abstract

Specialized Optical Developments in Astronomy. Edited by Atad-Ettedgui, Eli; D'Odorico, Sandro. Proceedings of the SPIE, Volume

Astronomy and Astrophysics

Astronomy

Scientific paper

We summarize the reasons why aspheric surfaces, including non-rotationally-symmetric surfaces, are increasingly important to ground and space-based astronomical instruments, yet challenging to produce. We mainly consider the generic problem of producing aspheres, and then lightweight segments for the primary mirror of an Extremely Large Telescope. We remark on the tension between manufacturability of spherical segments, and performance with aspheric segments. This provides the context for our presentation of the novel Precessions process for rapid polishing and form-correction of aspheric surfaces. We outline why this is a significant step beyond previous methods to automate aspheric production, and how it has resulted in a generalized, scaleable technology that does not require high capital-value tooling customized to particular types of optical form. We summarize implementation in the first two automated CNC machines of 200mm capacity, followed by the first 600mm machine, and the current status of the process-development program. We review quantitative results of polishing trials, including materials relevant to large and instrumentation optics. Finally, we comment on the potential of the technology for space optics and for removing quilting in honeycomb substrates.

Affiliated with

Also associated with

No associations

Rating

Precessions process for efficient production of aspheric optics for large telescopes and their instrumentation 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 Precessions process for efficient production of aspheric optics for large telescopes and their instrumentation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Precessions process for efficient production of aspheric optics for large telescopes and their instrumentation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-916110