Optical metrology for the filter set for the Hubble Space Telescope (HST) Advanced Camera for Surveys (ACS)

Douglas B. Leviton; Rene A. Boucarut; Frank D Bush; David A. Content; Ritva A. M. Keski-Kuha; Catherine Kral; Carolyn A. Krebs; Timothy J. Madison; Kimberly I. Mehalick; Linda A. Miner; Todd A. Norton; Peter Petrone III; Bernard Peter Puc; Clive Standley; Zlatan I. Tsvetanov; Frank Varosi

doi:10.1117/12.324536

28 August 1998 Optical metrology for the filter set for the Hubble Space Telescope (HST) Advanced Camera for Surveys (ACS)

Douglas B. Leviton, Rene A. Boucarut, Frank D Bush, David A. Content, Ritva A. M. Keski-Kuha, Catherine Kral, Carolyn A. Krebs, Timothy J. Madison, Kimberly I. Mehalick, Linda A. Miner, Todd A. Norton, Peter Petrone III, Bernard Peter Puc, Clive Standley, Zlatan I. Tsvetanov, Frank Varosi

Author Affiliations +

Proceedings Volume 3356, Space Telescopes and Instruments V; (1998) https://doi.org/10.1117/12.324536
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

Abstract

The Hubble Space Telescope (HST) advanced camera for surveys (ACS) employs a wide variety of spectral filtration components including narrow band, medium band, wide band, and far UV (FUV) long pass filters, spatially-variable filters, VIS/IR polarizers, NUV polarizers, FUV prisms, and a grism. These components are spread across ACS's wide field, high resolution, and solar blind channels which provide diffraction-limited imaging of astronomical targets using aberration-correcting optics which remove most aberrations form HST's optical telescope assembly. In order for ACS to be truly advanced, these filters must push the state-of-the-art in performance in a number of key areas at the same time. Important requirements which these filters must meet include outstanding transmitted wavefront, high transmittance, uniform transmittance across each filter, spectrally structure-free bandpasses, exceptionally high out of band rejection, and a high degree of parfocality. These constitute a very stringent set of requirements indeed, especially for filters which are up to 90 mm in diameter. The development of unique optical metrology stations used to demonstrate that each ACS filter will meet its design specifications is discussed. Of particular note are specially-designed spectral transmissometers and interferometers.

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Douglas B. Leviton, Rene A. Boucarut, Frank D Bush, David A. Content, Ritva A. M. Keski-Kuha, Catherine Kral, Carolyn A. Krebs, Timothy J. Madison, Kimberly I. Mehalick, Linda A. Miner, Todd A. Norton, Peter Petrone III, Bernard Peter Puc, Clive Standley, Zlatan I. Tsvetanov, and Frank Varosi "Optical metrology for the filter set for the Hubble Space Telescope (HST) Advanced Camera for Surveys (ACS)", Proc. SPIE 3356, Space Telescopes and Instruments V, (28 August 1998); https://doi.org/10.1117/12.324536

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