Manufacture of primary mirror segments for the giant magellan telescope

H. M. Martin; R. Allen; V. Gasho; B. T. Jannuzi; D. W. Kim; Jeffrey S Kingsley; K. Law; A. Loeff; R. D. Lutz; T. J. McMahon; C. J. Oh; M. T. Tuell; S. N. Weinberger; S. C. West

doi:10.1117/12.2312935

Manufacture of primary mirror segments for the giant magellan telescope

H. M. Martin, R. Allen, V. Gasho, B. T. Jannuzi, D. W. Kim, Jeffrey S Kingsley, K. Law, A. Loeff, R. D. Lutz, T. J. McMahon, C. J. Oh, M. T. Tuell, S. N. Weinberger, S. C. West

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

8 Scopus citations

Abstract

The Richard F. Caris Mirror Lab at the University of Arizona continues the production of 8.4 m lightweight honeycomb segments for the primary mirror of the Giant Magellan Telescope. GMT will have a center segment surrounded by six identical off-axis segments, plus an additional off-axis segment to allow continuous operation as segments are removed for coating. Production highlights of the last two years include the spin-casting of Segment 5, preliminary polishing of Segment 2, and completion of the rear surface processing for Segments 3 and 4. We completed a preliminary design of the significant modifications of the test systems required for Segment 4, the center segment. We finished an upgrade of the 8.4 m polishing machine; both the upgrade and experience gained with Segment 1 have contributed to much faster polishing convergence for Segment 2. Prior to polishing Segment 2, we verified the stability and accuracy of the measurement systems by re-measuring Segment 1, achieving good agreement among multiple independent tests as well as good agreement with the original acceptance tests of Segment 1.

Original language	English (US)
Title of host publication	Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III
Editors	Roland Geyl, Ramon Navarro
Publisher	SPIE
ISBN (Print)	9781510619654
DOIs	https://doi.org/10.1117/12.2312935
State	Published - 2018
Event	Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III 2018 - Austin, United States Duration: Jun 10 2018 → Jun 15 2018

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	10706
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Other

Other	Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III 2018
Country/Territory	United States
City	Austin
Period	6/10/18 → 6/15/18

Keywords

Aspheres
Giant magellan telescope
Off-axis
Optical fabrication
Optical testing
Telescopes

ASJC Scopus subject areas

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

Access to Document

10.1117/12.2312935

Cite this

Martin, H. M., Allen, R., Gasho, V., Jannuzi, B. T., Kim, D. W., Kingsley, J. S., Law, K., Loeff, A., Lutz, R. D., McMahon, T. J., Oh, C. J., Tuell, M. T., Weinberger, S. N., & West, S. C. (2018). Manufacture of primary mirror segments for the giant magellan telescope. In R. Geyl, & R. Navarro (Eds.), Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III Article 107060V (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10706). SPIE. https://doi.org/10.1117/12.2312935

Manufacture of primary mirror segments for the giant magellan telescope. / Martin, H. M.; Allen, R.; Gasho, V. et al.
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III. ed. / Roland Geyl; Ramon Navarro. SPIE, 2018. 107060V (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10706).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Martin, HM, Allen, R, Gasho, V, Jannuzi, BT , Kim, DW, Kingsley, JS, Law, K, Loeff, A, Lutz, RD, McMahon, TJ, Oh, CJ, Tuell, MT, Weinberger, SN & West, SC 2018, Manufacture of primary mirror segments for the giant magellan telescope. in R Geyl & R Navarro (eds), Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III., 107060V, Proceedings of SPIE - The International Society for Optical Engineering, vol. 10706, SPIE, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III 2018, Austin, United States, 6/10/18. https://doi.org/10.1117/12.2312935

Martin HM, Allen R, Gasho V, Jannuzi BT , Kim DW, Kingsley JS et al. Manufacture of primary mirror segments for the giant magellan telescope. In Geyl R, Navarro R, editors, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III. SPIE. 2018. 107060V. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.2312935

@inproceedings{75a4101ad4bf4c498479817111f31af3,

title = "Manufacture of primary mirror segments for the giant magellan telescope",

abstract = "The Richard F. Caris Mirror Lab at the University of Arizona continues the production of 8.4 m lightweight honeycomb segments for the primary mirror of the Giant Magellan Telescope. GMT will have a center segment surrounded by six identical off-axis segments, plus an additional off-axis segment to allow continuous operation as segments are removed for coating. Production highlights of the last two years include the spin-casting of Segment 5, preliminary polishing of Segment 2, and completion of the rear surface processing for Segments 3 and 4. We completed a preliminary design of the significant modifications of the test systems required for Segment 4, the center segment. We finished an upgrade of the 8.4 m polishing machine; both the upgrade and experience gained with Segment 1 have contributed to much faster polishing convergence for Segment 2. Prior to polishing Segment 2, we verified the stability and accuracy of the measurement systems by re-measuring Segment 1, achieving good agreement among multiple independent tests as well as good agreement with the original acceptance tests of Segment 1.",

keywords = "Aspheres, Giant magellan telescope, Off-axis, Optical fabrication, Optical testing, Telescopes",

author = "Martin, {H. M.} and R. Allen and V. Gasho and Jannuzi, {B. T.} and Kim, {D. W.} and Kingsley, {Jeffrey S} and K. Law and A. Loeff and Lutz, {R. D.} and McMahon, {T. J.} and Oh, {C. J.} and Tuell, {M. T.} and Weinberger, {S. N.} and West, {S. C.}",

note = "Publisher Copyright: {\textcopyright} 2018 SPIE.; Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III 2018 ; Conference date: 10-06-2018 Through 15-06-2018",

year = "2018",

doi = "10.1117/12.2312935",

language = "English (US)",

isbn = "9781510619654",

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

publisher = "SPIE",

editor = "Roland Geyl and Ramon Navarro",

booktitle = "Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III",

}

TY - GEN

T1 - Manufacture of primary mirror segments for the giant magellan telescope

AU - Martin, H. M.

AU - Allen, R.

AU - Gasho, V.

AU - Jannuzi, B. T.

AU - Kim, D. W.

AU - Kingsley, Jeffrey S

AU - Law, K.

AU - Loeff, A.

AU - Lutz, R. D.

AU - McMahon, T. J.

AU - Oh, C. J.

AU - Tuell, M. T.

AU - Weinberger, S. N.

AU - West, S. C.

PY - 2018

Y1 - 2018

N2 - The Richard F. Caris Mirror Lab at the University of Arizona continues the production of 8.4 m lightweight honeycomb segments for the primary mirror of the Giant Magellan Telescope. GMT will have a center segment surrounded by six identical off-axis segments, plus an additional off-axis segment to allow continuous operation as segments are removed for coating. Production highlights of the last two years include the spin-casting of Segment 5, preliminary polishing of Segment 2, and completion of the rear surface processing for Segments 3 and 4. We completed a preliminary design of the significant modifications of the test systems required for Segment 4, the center segment. We finished an upgrade of the 8.4 m polishing machine; both the upgrade and experience gained with Segment 1 have contributed to much faster polishing convergence for Segment 2. Prior to polishing Segment 2, we verified the stability and accuracy of the measurement systems by re-measuring Segment 1, achieving good agreement among multiple independent tests as well as good agreement with the original acceptance tests of Segment 1.

AB - The Richard F. Caris Mirror Lab at the University of Arizona continues the production of 8.4 m lightweight honeycomb segments for the primary mirror of the Giant Magellan Telescope. GMT will have a center segment surrounded by six identical off-axis segments, plus an additional off-axis segment to allow continuous operation as segments are removed for coating. Production highlights of the last two years include the spin-casting of Segment 5, preliminary polishing of Segment 2, and completion of the rear surface processing for Segments 3 and 4. We completed a preliminary design of the significant modifications of the test systems required for Segment 4, the center segment. We finished an upgrade of the 8.4 m polishing machine; both the upgrade and experience gained with Segment 1 have contributed to much faster polishing convergence for Segment 2. Prior to polishing Segment 2, we verified the stability and accuracy of the measurement systems by re-measuring Segment 1, achieving good agreement among multiple independent tests as well as good agreement with the original acceptance tests of Segment 1.

KW - Aspheres

KW - Giant magellan telescope

KW - Off-axis

KW - Optical fabrication

KW - Optical testing

KW - Telescopes

UR - http://www.scopus.com/inward/record.url?scp=85051268651&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85051268651&partnerID=8YFLogxK

U2 - 10.1117/12.2312935

DO - 10.1117/12.2312935

M3 - Conference contribution

AN - SCOPUS:85051268651

SN - 9781510619654

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III

A2 - Geyl, Roland

A2 - Navarro, Ramon

PB - SPIE

T2 - Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III 2018

Y2 - 10 June 2018 through 15 June 2018

ER -

Manufacture of primary mirror segments for the giant magellan telescope

Abstract

Publication series

Other

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this