Metrology and test requirements for movement of the RAS/HOMS test facility to NASA-GSFC

Greg Wenzel; Kevin Redman; William Eichhorn

doi:10.1117/12.670044

7 July 2006 Metrology and test requirements for movement of the RAS/HOMS test facility to NASA-GSFC

Greg Wenzel, Kevin Redman, William Eichhorn

Proceedings Volume 6273, Optomechanical Technologies for Astronomy; 62733I (2006) https://doi.org/10.1117/12.670044
Event: SPIE Astronomical Telescopes + Instrumentation, 2006, Orlando, Florida , United States

Abstract

The Refractive Aberrated Simulator/Hubble Opto-Mechanical Simulator (RAS/HOMS) test facility previously located at Ball Aerospace Division in Boulder (BASD), CO will be relocated to NASA Goddard Space Flight Center (GSFC). This paper will highlight the metrology and test methods used to characterize the facility prior to disassembly as well as assemble and align the facility once it has been moved to GSFC. The HOMS portion of the facility simulates the mechanical latch mechanisms that hold an axial instrument in alignment with the Hubble Space Telescope (HST) optical path. Two sets of three latches must be aligned in position on the HOMS structure to match that of the two axial bays in HST. The RAS portion of the facility is a refractive optical system that simulates the aberrations in HST's optical telescope assembly. Each mount and lens must be properly aligned within the RAS system in order to accurately simulate the aberrations of HST's optical system. The optical axis of the RAS system must be brought into alignment with the optical axis of HOMS system. Photogrammetry, theodolite auto-collimation data, theodolite coordinate data, and laser tracker coordinate data were used to characterize the system prior to disassembly. The same data will be used to bring the RAS/HOMS system as close to the original alignment as possible.

Citation Download Citation

Greg Wenzel, Kevin Redman, and William Eichhorn "Metrology and test requirements for movement of the RAS/HOMS test facility to NASA-GSFC", Proc. SPIE 6273, Optomechanical Technologies for Astronomy, 62733I (7 July 2006); https://doi.org/10.1117/12.670044

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