SIRTF-CTA optical performance test results

J. P. Schwenker; B. R. Brandl; W. F. Hoffmann; J. L. Hora; A. K. Mainzer; J. E. Mentzell; J. E. Van Cleve

doi:10.1117/12.461925

SIRTF-CTA optical performance test results

J. P. Schwenker, B. R. Brandl, W. F. Hoffmann, J. L. Hora, A. K. Mainzer, J. E. Mentzell, J. E. Van Cleve

Research output: Contribution to journal › Conference article › peer-review

16 Scopus citations

Abstract

This paper describes the principal optical results of the "End to End" test conducted on the SIRTF Cryogenic Telescope Assembly. Test system focus was located using images from the shortest wavelength science instrument, IRAC, much as it will be on-orbit. Deep out-of-focus images were used to determine the system wavefront by Phase Retrieval methods with heritage to Hubble Space Telescope work. This work has been used to update the SIRTF optical models and aid in predicting the on-orbit performance of the observatory. Images made with other assemblies able to observe in the test (IRS, PCRS) were used to verify their function and co-focus to the IRAC established position. Image jitter was analyzed warm and cold, with visible images captured by the PCRS instrument and cold, with images captured by the IRAC instrument.

Original language	English (US)
Pages (from-to)	30-41
Number of pages	12
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	4850
Issue number	1
DOIs	https://doi.org/10.1117/12.461925
State	Published - 2002
Externally published	Yes
Event	IR Space Telescopes and Instruments - waikoloa, HI, United States Duration: Aug 24 2002 → Aug 28 2002

Keywords

Cryogenic
Focus
Infrared
Liquid helium
Telescope
Thermal vac
Wavefront

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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10.1117/12.461925

Cite this

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title = "SIRTF-CTA optical performance test results",

abstract = "This paper describes the principal optical results of the {"}End to End{"} test conducted on the SIRTF Cryogenic Telescope Assembly. Test system focus was located using images from the shortest wavelength science instrument, IRAC, much as it will be on-orbit. Deep out-of-focus images were used to determine the system wavefront by Phase Retrieval methods with heritage to Hubble Space Telescope work. This work has been used to update the SIRTF optical models and aid in predicting the on-orbit performance of the observatory. Images made with other assemblies able to observe in the test (IRS, PCRS) were used to verify their function and co-focus to the IRAC established position. Image jitter was analyzed warm and cold, with visible images captured by the PCRS instrument and cold, with images captured by the IRAC instrument.",

keywords = "Cryogenic, Focus, Infrared, Liquid helium, Telescope, Thermal vac, Wavefront",

author = "Schwenker, {J. P.} and Brandl, {B. R.} and Hoffmann, {W. F.} and Hora, {J. L.} and Mainzer, {A. K.} and Mentzell, {J. E.} and {Van Cleve}, {J. E.}",

year = "2002",

doi = "10.1117/12.461925",

language = "English (US)",

volume = "4850",

pages = "30--41",

journal = "Proceedings of SPIE - The International Society for Optical Engineering",

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number = "1",

note = "IR Space Telescopes and Instruments ; Conference date: 24-08-2002 Through 28-08-2002",

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AU - Schwenker, J. P.

AU - Brandl, B. R.

AU - Hoffmann, W. F.

AU - Hora, J. L.

AU - Mainzer, A. K.

AU - Mentzell, J. E.

AU - Van Cleve, J. E.

PY - 2002

Y1 - 2002

N2 - This paper describes the principal optical results of the "End to End" test conducted on the SIRTF Cryogenic Telescope Assembly. Test system focus was located using images from the shortest wavelength science instrument, IRAC, much as it will be on-orbit. Deep out-of-focus images were used to determine the system wavefront by Phase Retrieval methods with heritage to Hubble Space Telescope work. This work has been used to update the SIRTF optical models and aid in predicting the on-orbit performance of the observatory. Images made with other assemblies able to observe in the test (IRS, PCRS) were used to verify their function and co-focus to the IRAC established position. Image jitter was analyzed warm and cold, with visible images captured by the PCRS instrument and cold, with images captured by the IRAC instrument.

AB - This paper describes the principal optical results of the "End to End" test conducted on the SIRTF Cryogenic Telescope Assembly. Test system focus was located using images from the shortest wavelength science instrument, IRAC, much as it will be on-orbit. Deep out-of-focus images were used to determine the system wavefront by Phase Retrieval methods with heritage to Hubble Space Telescope work. This work has been used to update the SIRTF optical models and aid in predicting the on-orbit performance of the observatory. Images made with other assemblies able to observe in the test (IRS, PCRS) were used to verify their function and co-focus to the IRAC established position. Image jitter was analyzed warm and cold, with visible images captured by the PCRS instrument and cold, with images captured by the IRAC instrument.

KW - Cryogenic

KW - Focus

KW - Infrared

KW - Liquid helium

KW - Telescope

KW - Thermal vac

KW - Wavefront

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EP - 41

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

IS - 1

T2 - IR Space Telescopes and Instruments

Y2 - 24 August 2002 through 28 August 2002

ER -

SIRTF-CTA optical performance test results

Abstract

Keywords

ASJC Scopus subject areas

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