Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995alab.reptr....e&link_type=abstract
Final Report, May 1995 Alabama Univ., Huntsville, AL. Center for Applied Optics.
Astronomy and Astrophysics
Astrophysics
Electroless Deposition, Fabrication, Grazing Incidence Telescopes, Mandrels, Mirrors, X Ray Astrophysics Facility, Aluminum, Coatings, Gold Coatings, Nickel, Optical Equipment, Plating, Replicas, Residual Stress, Surface Roughness, Vacuum Deposition
Scientific paper
Advanced optical systems for applications such as grazing incidence Wolter I x-ray mirror assemblies require extraordinary mirror surfaces in terms of fine finish and surface figure. The impeccable mirror surface is on the inside of the rotational mirror form. One practical method of producing devices with these requirements is to first fabricate an exterior surface for the optical device then replicate that surface to have the inverse component with lightweight characteristics. The replicated optic is not better than the master or mandrel from which it is made. This task identifies methods and materials for forming these extremely low roughness optical components. The objectives of this contract were to (1) prepare replication samples of electroless nickel coated aluminum, and determine process requirements for plating XDA test optic; (2) prepare and assemble plating equipment required to process a demonstration optic; (3) characterize mandrels, replicas and test samples for residual stress, surface contamination and surface roughness and figure using equipment at MSFC and; (4) provide technical expertise in establishing the processes, procedures, supplies and equipment needed to process the XDA test optics.
Engelhaupt Darell
Martin Greg
Wilson Michele
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