1 June 1994 Collimating the Hubble Space Telescope
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Collimation techniques for the Hubble Space Telescope before and after the 1993 December servicing mission are discussed. As a first step we convert actuator positions of the HST secondary mirror into tilts and decenters, by means of a conversion matrix. Theoretical estimates of wavefront errors introduced by known amounts of tilts and decenters are related to each other by means of a conversion matrix. Several sets of stellar images taken with the Faint Object Camera over a two year period are analyzed and aberration coefficients derived. A residual coma of approximately 1/19th wave at 632.8 nm is found in the images. We report here the secondary mirror move made, after the refurbishment mission in 1993 December, to remove the coma and the analysis of the images taken after the move to verify the collimation.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hashima Hasan, Hashima Hasan, } "Collimating the Hubble Space Telescope", Proc. SPIE 2199, Advanced Technology Optical Telescopes V, (1 June 1994); doi: 10.1117/12.176225; https://doi.org/10.1117/12.176225


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