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Advanced flow-polishing and surface metrology of the so56 x ray telescope
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 1992 |
| Description | The surface finishing of X ray grazing incidence optics is a most demanding area of optical processing, both in terms of metrology and application of optical finishing techniques. An existing optical mirror was processed using a new removal technique that uses a jet of finely dispersed and extremely small particles that impact a surface, which under the correct conditions, produces an ultrasmooth surface, especially on aspheric curvatures. The surfaces of the SO56 mirror are tapered conical shapes that have a continuously changing radius with the primary mirror having a parabolic shape and the secondary mirror a hyperbolic shape. An optical ray trace that was conducted of a telescope used the measured parameters from the existing substrates to set up the prescription for the optical layout. The optimization indicated a wavefront performance of 0.10 A at 0.633 micron. |
| File Size | 1120558 |
| Page Count | 27 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19920011273 |
| Archival Resource Key | ark:/13960/t3wt3kx1q |
| Language | English |
| Publisher Date | 1992-03-02 |
| Access Restriction | Open |
| Subject Keyword | Asphericity Layouts Grazing Incidence Metrology Geometrical Optics Mirrors Surface Finishing Curvature Substrates Optimization Wave Fronts X Ray Telescopes Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
