The image quality of the Southern African Large Telescope (SALT)

Darragh E. O'Donoghue, Eli Atad-Ettedgui, Luis Balona, Bruce C. Bigelow, John A. Booth, Lucian Botha, Janus D. Brink, David A.H. Buckley, Phil Charles, Alrin Christians, J. Christopher Clemens, Lisa A. Crause, Steven M. Crawford, Geoffrey P. Evans, Hitesh Gajjar, Yas Hashimoto, Malcolm Hendricks, Alexei Kniazev, Anthony R. Koeslag, Willie P. Koorts & 21 others Herman J. Kriel, Nicola S. Loaring, Jonathan Love, Fred Marang, Douglas Metcalfe, Brennan Meyer, James O'Connor, Charl A. Du Plessis, Lawrence William Ramsey, Encarni Romero-Colmenero, Craig Sass, Johann C. Scholtz, Ramotholo Sefako, Sandisa Siyengo, Martin Still, Ockert J. Strydom, Arkadiusz Swat, Johann F. Du Toit, Petri Vaisanen, Martyn Wells, Hannah Worters

Research output: Chapter in Book/Report/Conference proceedingConference contribution

14 Citations (Scopus)

Abstract

Construction of the Southern African Large Telescope (SALT) was largely completed by the end of 2005 and since then it has been in intensive commissioning. This has now almost been completed except for the telescope's image quality which shows optical aberrations, chiefly a focus gradient across the focal plane, along with astigmatism and other less significant aberrations. This paper describes the optical systems engineering investigation that has been conducted since early 2006 to diagnose the problem. A rigorous approach has been followed which has entailed breaking down the system into the major sub-systems and subjecting them to testing on an individual basis. Significant progress has been achieved with many components of the optical system shown to be operating correctly. The fault has been isolated to a major optical sub-system. We present the results obtained so far, and discuss what remains to be done.

Original languageEnglish (US)
Title of host publicationAdvanced Optical and Mechanical Technologies in Telescopes and Instrumentation
Volume7018
DOIs
StatePublished - Nov 21 2008
EventAdvanced Optical and Mechanical Technologies in Telescopes and Instrumentation - Marseille, France
Duration: Jun 23 2008Jun 28 2008

Other

OtherAdvanced Optical and Mechanical Technologies in Telescopes and Instrumentation
CountryFrance
CityMarseille
Period6/23/086/28/08

Fingerprint

Aberrations
Aberration
Telescopes
Optical systems
Image Quality
Optical System
Image quality
Telescope
aberration
Subsystem
telescopes
Astigmatism
Optical engineering
Commissioning
astigmatism
Systems Engineering
Focal Plane
Systems engineering
systems engineering
Fault

All Science Journal Classification (ASJC) codes

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

Cite this

O'Donoghue, D. E., Atad-Ettedgui, E., Balona, L., Bigelow, B. C., Booth, J. A., Botha, L., ... Worters, H. (2008). The image quality of the Southern African Large Telescope (SALT). In Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation (Vol. 7018). [701813] https://doi.org/10.1117/12.788841
O'Donoghue, Darragh E. ; Atad-Ettedgui, Eli ; Balona, Luis ; Bigelow, Bruce C. ; Booth, John A. ; Botha, Lucian ; Brink, Janus D. ; Buckley, David A.H. ; Charles, Phil ; Christians, Alrin ; Clemens, J. Christopher ; Crause, Lisa A. ; Crawford, Steven M. ; Evans, Geoffrey P. ; Gajjar, Hitesh ; Hashimoto, Yas ; Hendricks, Malcolm ; Kniazev, Alexei ; Koeslag, Anthony R. ; Koorts, Willie P. ; Kriel, Herman J. ; Loaring, Nicola S. ; Love, Jonathan ; Marang, Fred ; Metcalfe, Douglas ; Meyer, Brennan ; O'Connor, James ; Du Plessis, Charl A. ; Ramsey, Lawrence William ; Romero-Colmenero, Encarni ; Sass, Craig ; Scholtz, Johann C. ; Sefako, Ramotholo ; Siyengo, Sandisa ; Still, Martin ; Strydom, Ockert J. ; Swat, Arkadiusz ; Du Toit, Johann F. ; Vaisanen, Petri ; Wells, Martyn ; Worters, Hannah. / The image quality of the Southern African Large Telescope (SALT). Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation. Vol. 7018 2008.
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abstract = "Construction of the Southern African Large Telescope (SALT) was largely completed by the end of 2005 and since then it has been in intensive commissioning. This has now almost been completed except for the telescope's image quality which shows optical aberrations, chiefly a focus gradient across the focal plane, along with astigmatism and other less significant aberrations. This paper describes the optical systems engineering investigation that has been conducted since early 2006 to diagnose the problem. A rigorous approach has been followed which has entailed breaking down the system into the major sub-systems and subjecting them to testing on an individual basis. Significant progress has been achieved with many components of the optical system shown to be operating correctly. The fault has been isolated to a major optical sub-system. We present the results obtained so far, and discuss what remains to be done.",
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O'Donoghue, DE, Atad-Ettedgui, E, Balona, L, Bigelow, BC, Booth, JA, Botha, L, Brink, JD, Buckley, DAH, Charles, P, Christians, A, Clemens, JC, Crause, LA, Crawford, SM, Evans, GP, Gajjar, H, Hashimoto, Y, Hendricks, M, Kniazev, A, Koeslag, AR, Koorts, WP, Kriel, HJ, Loaring, NS, Love, J, Marang, F, Metcalfe, D, Meyer, B, O'Connor, J, Du Plessis, CA, Ramsey, LW, Romero-Colmenero, E, Sass, C, Scholtz, JC, Sefako, R, Siyengo, S, Still, M, Strydom, OJ, Swat, A, Du Toit, JF, Vaisanen, P, Wells, M & Worters, H 2008, The image quality of the Southern African Large Telescope (SALT). in Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation. vol. 7018, 701813, Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation, Marseille, France, 6/23/08. https://doi.org/10.1117/12.788841

The image quality of the Southern African Large Telescope (SALT). / O'Donoghue, Darragh E.; Atad-Ettedgui, Eli; Balona, Luis; Bigelow, Bruce C.; Booth, John A.; Botha, Lucian; Brink, Janus D.; Buckley, David A.H.; Charles, Phil; Christians, Alrin; Clemens, J. Christopher; Crause, Lisa A.; Crawford, Steven M.; Evans, Geoffrey P.; Gajjar, Hitesh; Hashimoto, Yas; Hendricks, Malcolm; Kniazev, Alexei; Koeslag, Anthony R.; Koorts, Willie P.; Kriel, Herman J.; Loaring, Nicola S.; Love, Jonathan; Marang, Fred; Metcalfe, Douglas; Meyer, Brennan; O'Connor, James; Du Plessis, Charl A.; Ramsey, Lawrence William; Romero-Colmenero, Encarni; Sass, Craig; Scholtz, Johann C.; Sefako, Ramotholo; Siyengo, Sandisa; Still, Martin; Strydom, Ockert J.; Swat, Arkadiusz; Du Toit, Johann F.; Vaisanen, Petri; Wells, Martyn; Worters, Hannah.

Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation. Vol. 7018 2008. 701813.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - The image quality of the Southern African Large Telescope (SALT)

AU - O'Donoghue, Darragh E.

AU - Atad-Ettedgui, Eli

AU - Balona, Luis

AU - Bigelow, Bruce C.

AU - Booth, John A.

AU - Botha, Lucian

AU - Brink, Janus D.

AU - Buckley, David A.H.

AU - Charles, Phil

AU - Christians, Alrin

AU - Clemens, J. Christopher

AU - Crause, Lisa A.

AU - Crawford, Steven M.

AU - Evans, Geoffrey P.

AU - Gajjar, Hitesh

AU - Hashimoto, Yas

AU - Hendricks, Malcolm

AU - Kniazev, Alexei

AU - Koeslag, Anthony R.

AU - Koorts, Willie P.

AU - Kriel, Herman J.

AU - Loaring, Nicola S.

AU - Love, Jonathan

AU - Marang, Fred

AU - Metcalfe, Douglas

AU - Meyer, Brennan

AU - O'Connor, James

AU - Du Plessis, Charl A.

AU - Ramsey, Lawrence William

AU - Romero-Colmenero, Encarni

AU - Sass, Craig

AU - Scholtz, Johann C.

AU - Sefako, Ramotholo

AU - Siyengo, Sandisa

AU - Still, Martin

AU - Strydom, Ockert J.

AU - Swat, Arkadiusz

AU - Du Toit, Johann F.

AU - Vaisanen, Petri

AU - Wells, Martyn

AU - Worters, Hannah

PY - 2008/11/21

Y1 - 2008/11/21

N2 - Construction of the Southern African Large Telescope (SALT) was largely completed by the end of 2005 and since then it has been in intensive commissioning. This has now almost been completed except for the telescope's image quality which shows optical aberrations, chiefly a focus gradient across the focal plane, along with astigmatism and other less significant aberrations. This paper describes the optical systems engineering investigation that has been conducted since early 2006 to diagnose the problem. A rigorous approach has been followed which has entailed breaking down the system into the major sub-systems and subjecting them to testing on an individual basis. Significant progress has been achieved with many components of the optical system shown to be operating correctly. The fault has been isolated to a major optical sub-system. We present the results obtained so far, and discuss what remains to be done.

AB - Construction of the Southern African Large Telescope (SALT) was largely completed by the end of 2005 and since then it has been in intensive commissioning. This has now almost been completed except for the telescope's image quality which shows optical aberrations, chiefly a focus gradient across the focal plane, along with astigmatism and other less significant aberrations. This paper describes the optical systems engineering investigation that has been conducted since early 2006 to diagnose the problem. A rigorous approach has been followed which has entailed breaking down the system into the major sub-systems and subjecting them to testing on an individual basis. Significant progress has been achieved with many components of the optical system shown to be operating correctly. The fault has been isolated to a major optical sub-system. We present the results obtained so far, and discuss what remains to be done.

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U2 - 10.1117/12.788841

DO - 10.1117/12.788841

M3 - Conference contribution

SN - 9780819472281

VL - 7018

BT - Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation

ER -

O'Donoghue DE, Atad-Ettedgui E, Balona L, Bigelow BC, Booth JA, Botha L et al. The image quality of the Southern African Large Telescope (SALT). In Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation. Vol. 7018. 2008. 701813 https://doi.org/10.1117/12.788841