Abstract

The optical design of the second-generation wide-field/planetary-camera instrument for the Hubble Space Telescope has been modified to compensate for the spherical aberration of the optical telescope assembly (OTA) by introduction of undercorrected spherical aberration into the wave front. This instrument can be tested in a simple manner to ensure that its aberration contribution has the proper sign and magnitude. We present designs for a near-zero power doublet lens that can be used to generate a spherically aberrated wave front that is similar to the OTA wave front. When this lens is used in combination with the instrument, a near-perfect or nulled wave front should be produced, resulting in a high-quality point image on axis. We also present lens designs for a similar test that can be performed on the OTA simulators now being built to verify the other second-generation instruments.

© 1993 Optical Society of America

Hubble Space Telescope primary-mirror characterization by measurement of the reflective null corrector

L. Furey, T. Dubos, D. Hansen, and J. Samuels-Schwartz
Appl. Opt. 32(10) 1703-1714 (1993)

Telescope simulators for Hubble: an overview of optical designs

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Reflective correctors for the Hubble Space Telescope axial instruments

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Combined approach to the Hubble Space Telescope wave-front distortion analysis

Claude Roddier and François Roddier
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Modeling technique for the Hubble Space Telescope wave-front deformation

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