Manufacture of a 1.7m prototype of the GMT primary mirror segments

Details Manufacture of a 1.7m prototype of the GMT primary mirror segments Manufacture of a 1.7m prototype of the GMT primary mirror segments

Jul 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006spie.6273e..14m&link_type=abstract

Optomechanical Technologies for Astronomy. Edited by Atad-Ettedgui, Eli; Antebi, Joseph; Lemke, Dietrich. Proceedings of the S

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We have nearly completed the manufacture of a 1.7 m off-axis mirror as part of the technology development for the Giant Magellan Telescope. The mirror is an off-axis section of a 5.3 m f/0.73 parent paraboloid, making it roughly a 1:5 model of the outer 8.4 m GMT segment. The 1.7 m mirror will be the primary mirror of the New Solar Telescope at Big Bear Solar Observatory. It has a 2.7 mm peak-to-valley departure from the best-fit sphere, presenting a serious challenge in terms of both polishing and measurement. The mirror was polished with a stressed lap, which bends actively to match the local curvature at each point on the mirror surface, and works for asymmetric mirrors as well as symmetric aspheres. It was measured using a hybrid reflective-diffractive null corrector to compensate for the mirror's asphericity. Both techniques will be applied in scaled-up versions to the GMT segments.

Affiliated with

Also associated with

No associations

Rating

Manufacture of a 1.7m prototype of the GMT primary mirror segments 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 Manufacture of a 1.7m prototype of the GMT primary mirror segments, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Manufacture of a 1.7m prototype of the GMT primary mirror segments will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1893291