Manufacture of a combined primary and tertiary mirror for the Large Synoptic Survey Telescope

H. M. Martin, James H Burge, B. Cuerden, W. B. Davison, Jeffrey S Kingsley, R. D. Lutz, S. M. Miller, M. Tuell

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

15 Citations (Scopus)

Abstract

The Large Synoptic Survey Telescope uses a unique optomechanical design that places the primary and tertiary mirrors on a single glass substrate. The honeycomb sandwich mirror blank was formed in March 2008 by spin-casting. The surface is currently a paraboloid with a 9.9 m focal length matching the primary. The deeper curve of the tertiary mirror will be produced when the surfaces are generated. Both mirrors will be lapped and polished using stressed laps and other tools on an 8.4 m polishing machine. The highly aspheric primary mirror will be measured through a refractive null lens, and a computer-generated hologram will be used to validate the null lens. The tertiary mirror will be measured through a diffractive null corrector, also validated with a separate hologram. The holograms for the two tests provide alignment references that will be used to make the axes of the two surfaces coincide.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume7018
DOIs
StatePublished - 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

Telescopes
Telescope
Mirror
Mirrors
Holograms
telescopes
mirrors
Hologram
Null
Lenses
Polishing machines
Lens
lenses
Casting
Polishing
Honeycomb
Corrector
Sandwich
blanks
polishing

Keywords

  • Active optics
  • Aspheres
  • Optical fabrication
  • Optical testing
  • Telescopes

ASJC Scopus subject areas

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

Cite this

Martin, H. M., Burge, J. H., Cuerden, B., Davison, W. B., Kingsley, J. S., Lutz, R. D., ... Tuell, M. (2008). Manufacture of a combined primary and tertiary mirror for the Large Synoptic Survey Telescope. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 7018). [70180G] https://doi.org/10.1117/12.789959

Manufacture of a combined primary and tertiary mirror for the Large Synoptic Survey Telescope. / Martin, H. M.; Burge, James H; Cuerden, B.; Davison, W. B.; Kingsley, Jeffrey S; Lutz, R. D.; Miller, S. M.; Tuell, M.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7018 2008. 70180G.

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

Martin, HM, Burge, JH, Cuerden, B, Davison, WB, Kingsley, JS, Lutz, RD, Miller, SM & Tuell, M 2008, Manufacture of a combined primary and tertiary mirror for the Large Synoptic Survey Telescope. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 7018, 70180G, Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation, Marseille, France, 6/23/08. https://doi.org/10.1117/12.789959
Martin HM, Burge JH, Cuerden B, Davison WB, Kingsley JS, Lutz RD et al. Manufacture of a combined primary and tertiary mirror for the Large Synoptic Survey Telescope. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7018. 2008. 70180G https://doi.org/10.1117/12.789959
Martin, H. M. ; Burge, James H ; Cuerden, B. ; Davison, W. B. ; Kingsley, Jeffrey S ; Lutz, R. D. ; Miller, S. M. ; Tuell, M. / Manufacture of a combined primary and tertiary mirror for the Large Synoptic Survey Telescope. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7018 2008.
@inproceedings{a5157b8781684d13b56b5b46a1381f5c,
title = "Manufacture of a combined primary and tertiary mirror for the Large Synoptic Survey Telescope",
abstract = "The Large Synoptic Survey Telescope uses a unique optomechanical design that places the primary and tertiary mirrors on a single glass substrate. The honeycomb sandwich mirror blank was formed in March 2008 by spin-casting. The surface is currently a paraboloid with a 9.9 m focal length matching the primary. The deeper curve of the tertiary mirror will be produced when the surfaces are generated. Both mirrors will be lapped and polished using stressed laps and other tools on an 8.4 m polishing machine. The highly aspheric primary mirror will be measured through a refractive null lens, and a computer-generated hologram will be used to validate the null lens. The tertiary mirror will be measured through a diffractive null corrector, also validated with a separate hologram. The holograms for the two tests provide alignment references that will be used to make the axes of the two surfaces coincide.",
keywords = "Active optics, Aspheres, Optical fabrication, Optical testing, Telescopes",
author = "Martin, {H. M.} and Burge, {James H} and B. Cuerden and Davison, {W. B.} and Kingsley, {Jeffrey S} and Lutz, {R. D.} and Miller, {S. M.} and M. Tuell",
year = "2008",
doi = "10.1117/12.789959",
language = "English (US)",
isbn = "9780819472281",
volume = "7018",
booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",

}

TY - GEN

T1 - Manufacture of a combined primary and tertiary mirror for the Large Synoptic Survey Telescope

AU - Martin, H. M.

AU - Burge, James H

AU - Cuerden, B.

AU - Davison, W. B.

AU - Kingsley, Jeffrey S

AU - Lutz, R. D.

AU - Miller, S. M.

AU - Tuell, M.

PY - 2008

Y1 - 2008

N2 - The Large Synoptic Survey Telescope uses a unique optomechanical design that places the primary and tertiary mirrors on a single glass substrate. The honeycomb sandwich mirror blank was formed in March 2008 by spin-casting. The surface is currently a paraboloid with a 9.9 m focal length matching the primary. The deeper curve of the tertiary mirror will be produced when the surfaces are generated. Both mirrors will be lapped and polished using stressed laps and other tools on an 8.4 m polishing machine. The highly aspheric primary mirror will be measured through a refractive null lens, and a computer-generated hologram will be used to validate the null lens. The tertiary mirror will be measured through a diffractive null corrector, also validated with a separate hologram. The holograms for the two tests provide alignment references that will be used to make the axes of the two surfaces coincide.

AB - The Large Synoptic Survey Telescope uses a unique optomechanical design that places the primary and tertiary mirrors on a single glass substrate. The honeycomb sandwich mirror blank was formed in March 2008 by spin-casting. The surface is currently a paraboloid with a 9.9 m focal length matching the primary. The deeper curve of the tertiary mirror will be produced when the surfaces are generated. Both mirrors will be lapped and polished using stressed laps and other tools on an 8.4 m polishing machine. The highly aspheric primary mirror will be measured through a refractive null lens, and a computer-generated hologram will be used to validate the null lens. The tertiary mirror will be measured through a diffractive null corrector, also validated with a separate hologram. The holograms for the two tests provide alignment references that will be used to make the axes of the two surfaces coincide.

KW - Active optics

KW - Aspheres

KW - Optical fabrication

KW - Optical testing

KW - Telescopes

UR - http://www.scopus.com/inward/record.url?scp=56249116277&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=56249116277&partnerID=8YFLogxK

U2 - 10.1117/12.789959

DO - 10.1117/12.789959

M3 - Conference contribution

SN - 9780819472281

VL - 7018

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

ER -