Other
Scientific paper
Aug 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008spie.7063e..41z&link_type=abstract
Interferometry XIV: Techniques and Analysis. Edited by Schmit, Joanna; Creath, Katherine; Towers, Catherine E. Proceedings o
Other
Scientific paper
Optical testing of a large convex aspheric surface, such as the secondary of a Ritchey-Chretien telescope, can be performed with a Fizeau interferometer that utilizes subaperture aspheric reference plates, each providing a null test of a subaperture of the larger mirror. The subaperture data can be combined or stitched together to create a map of the full surface. The region of the secondary mirror surface under test in each sub-aperture is an off-axis segment of the parent aspheric surface, therefore, the Fizeau reference requires a non-axi-symmetric aspheric surface to match it. Misalignment of the Fizeau reference relative to the parent in each sub-aperture will then result in aberrations in the measurements other than the ordinary terms of piston and tilt. When stitching sub-aperture measurements together, the apparent aberrations due to the null lens misalignment need to be fitted and subtracted. This paper presents an algorithm to perform this particular type of stitching.
Burge James H.
Zhao Chunyu
No associations
LandOfFree
Stitching of off-axis sub-aperture null measurements of an aspheric surface 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 Stitching of off-axis sub-aperture null measurements of an aspheric surface, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stitching of off-axis sub-aperture null measurements of an aspheric surface will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1063056